CN203225573U - Power-storing LED driver employing switching MOS tube and DC-DC module capable of multiplexing - Google Patents
Power-storing LED driver employing switching MOS tube and DC-DC module capable of multiplexing Download PDFInfo
- Publication number
- CN203225573U CN203225573U CN2013202686401U CN201320268640U CN203225573U CN 203225573 U CN203225573 U CN 203225573U CN 2013202686401 U CN2013202686401 U CN 2013202686401U CN 201320268640 U CN201320268640 U CN 201320268640U CN 203225573 U CN203225573 U CN 203225573U
- Authority
- CN
- China
- Prior art keywords
- circuit
- links
- module
- lithium battery
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a power-storing LED driver employing a switching MOS tube and a DC-DC module capable of multiplexing. The utility model relates to three working modes, an AC power supply mode, a lithium battery pack power supply mode and a lithium battery pack charging mode. The DC-DC converter employed by the utility model has a multiplexing function. In AC power supply, DC voltage output by an AC-DC converter is converted to a constant current source for supplying power for an LED. When power is supplied by a lithium battery pack, DC voltage output by the lithium battery is converted to the constant current source for supplying power for the LED. The switching of the three working modes is realized by a MOS tube switching module. A microcontroller controlling and switching module is removed, so that a whole system becomes simplified and practical. At the same time, manufacturing cost is reduced substantially. A power factor of the power-storing LED driver employing the switching MOS tube and the DC-DC module capable of multiplexing provided by the utility model can be higher than 0.94 and the efficiency is higher than 86 percents. And power supply of a LED lamp can be guaranteed continuously in a long term during power outage, so that normal working of the LED lamp can be guaranteed during the power outage.
Description
Technical field
The utility model relates to a kind of LED driving power, and particularly metal-oxide-semiconductor switches the energy storage led driver of reusable DC-DC module.
Background technology
Along with the development of society, people sharply increase the demand of electric power, and particularly in vast rural area, electric power often shows a deficiency, and this has had a strong impact on people's normal life.Thereby the technology of electric power energy-saving and electric power energy storage aspect becomes current research focus.Under this background, energy storage LED lighting technology is arisen at the historic moment.Wherein the LED lamp is owing to have series of advantages such as efficient, energy-saving and environmental protection, still be the display panel field at illumination, backlight no matter, all obtained market application widely.
Yet, because energy storage LED driving power relates to complicated circuit-mode switching problem, need complicated MCU control module just can finish switching.The circuit difficulty that this has not only increased whole system also makes cost of manufacture very expensive, and practicality is not high, is unfavorable for the marketization of product.In addition, LED need be under the pattern of constant current could operate as normal, obtaining a kind of stable constant-current source efficiently also is the key of LED lighting technology.
The utility model content
At the problem that background technology exists, the utility model provides a kind of metal-oxide-semiconductor to switch the energy storage led driver of reusable DC-DC module.
For achieving the above object, the technical solution of the utility model is:
A kind of metal-oxide-semiconductor switches the energy storage led driver of reusable DC-DC module, it is characterized in that, comprise input connect AC signal and with AC signal convert to AC-DC converter, the store electrical energy of direct current signal lithium battery group and lithium battery monitoring management circuit, select the metal-oxide-semiconductor handover module of powering mode and convert the direct voltage of AC-DC converter and lithium battery group and the output of lithium battery monitoring management circuit to DC-DC converter that constant-current source is supplied with the LED illuminating lamp; Wherein, the AC-DC converter links to each other with the metal-oxide-semiconductor handover module with lithium battery monitoring management circuit with the lithium battery group; The lithium battery group links to each other with the metal-oxide-semiconductor handover module with the AC-DC converter with lithium battery monitoring management circuit; The metal-oxide-semiconductor handover module links to each other with lithium battery monitoring management circuit, AC-DC converter and DC-DC converter with the lithium battery group; The DC-DC converter links to each other with the LED illuminating lamp with the metal-oxide-semiconductor handover module.
At the energy storage led driver of above-mentioned metal-oxide-semiconductor switching reusable DC-DC module, described AC-DC converter comprises sheet inner control module and the main topography module that is connected with sheet inner control module; Sheet inner control module comprises biasing circuit, undervoltage lockout circuit, soft starting circuit, gate driver circuit, lead-edge-blanking circuit, control circuit, pulse width modulation circuit, clock circuit, frequency jitter circuit, error amplifier, sampling hold circuit and current foldback circuit; Biasing circuit links to each other with power vd D, control circuit, gate driver circuit and undervoltage lockout circuit; Undervoltage lockout circuit links to each other with biasing circuit with power vd D; Soft starting circuit links to each other with module port STP with pulse-width modulation circuit; Gate driver circuit one termination pulse width modulation circuit links to each other, and the other end links to each other with the GATE end; The lead-edge-blanking circuit links to each other with clock circuit, current foldback circuit and module port CS simultaneously; Control circuit links to each other with pulse width modulation circuit with sampling hold circuit; Clock circuit links to each other with pulse width modulation circuit with frequency jitter circuit, error amplifier, lead-edge-blanking circuit; The negative terminal of error amplifier links to each other with sampling hold circuit, and anode links to each other with the power supply of 2V, and output links to each other with clock circuit; Frequency jitter circuit links to each other with clock circuit; Sampling hold circuit links to each other with control circuit, error amplifier and module port INV; Current foldback circuit links to each other with pulse width modulation circuit with the lead-edge-blanking circuit; In addition, biasing circuit, undervoltage lockout circuit, soft starting circuit, gate driver circuit, lead-edge-blanking circuit, control circuit, pulse width modulation circuit, clock circuit, frequency jitter circuit, error amplifier, sampling hold circuit and current foldback circuit all link to each other with module port GND.Main topography module comprises full bridge rectifier, input filter circuit, transformer T1, current rectifying and wave filtering circuit, voltage detecting circuit, current detection circuit, power switch pipe Q1, rectification circuit and clamping protective circuit; One end of full bridge rectifier links to each other with AC-input voltage, and an end connects input filter circuit; Input filter circuit one termination full bridge rectifier, the other end links to each other with current rectifying and wave filtering circuit; Current rectifying and wave filtering circuit one end links to each other with input filter circuit, and the other end links to each other with transformer T1; Voltage detecting circuit one end links to each other with transformer T1, and an end links to each other with the STP end of sheet inner control module; Current detection circuit one end links to each other with transformer T1, and an end links to each other with the CS end of sheet inner control module; The drain electrode of power switch pipe Q1 links to each other with transformer T1, and grid links to each other with the GATE port of sheet inner control module by resistance R 9, and source electrode is through resistance R 12 ground connection; Rectification circuit one end links to each other with transformer, an end output circuit.
The utility model adopts the voltage-tracing method to make the AC-DC converter guarantee the high efficiency while, and power factor can reach more than 0.94.Its principle is: the phase place of control inductive current peak envelope is followed the phase place of input voltage, and under the DCM pattern, the peak current on the main coil of limit, source is
V wherein
InFor being added to the voltage at main coil two ends, limit, source behind the rectifying and wave-filtering, D, T
sBe respectively duty ratio and the cycle of switching signal, L is the inductance value of limit, source main coil.The average current of limit, source main coil is
Wherein, t
OnBe inductive current rise time (being the ON time of power switch pipe), t
DownFor inductive current drops to for 0 time from peak value, K is fixed constant.As seen, as long as duty ratio D constant peak current i
PkWith average current i
AvAll be directly proportional with input voltage.AC-DC converter described in the utility model under the heavy load state, is operated in the CC pattern, and switch controlling signal is the constant frequency signal that pulsewidth is modulated, and at this moment, in the cycle, the variable quantity of duty ratio is little at half civil power; In/slight load condition under, be operated in the CV pattern, switching signal is the fixing frequency variation signal of duty ratio.In/slight load under, the frequency of switching signal does not reach maximum, thereby has reduced switching loss, further increases work efficiency.After tested, the AC-DC converter that the utility model is designed, power factor reaches more than 0.94, and efficient has reached more than 86%.
At the energy storage led driver of above-mentioned metal-oxide-semiconductor switching reusable DC-DC module, described lithium battery group and lithium battery monitoring management circuit comprise lithium battery group, lithium battery monitoring management module, voltage detecting circuit, current detection circuit, overcharge and over-discharge protection circuit.Voltage detecting circuit links to each other with lithium battery monitoring management module with the lithium battery group respectively; Current detection circuit links to each other with lithium battery monitoring management module with the lithium battery group respectively; Overcharge with over-discharge protection circuit and be made up of the metal-oxide-semiconductor switch, grid all links to each other with lithium battery monitoring management module, and drain electrode links to each other with the lithium battery group with the output of AC-DC respectively, and source electrode interconnects.
The lithium battery group comprises the lithium battery of 4 joint series connection, and it is the carrier of energy storage.
Lithium battery monitoring management module can be monitored and protects the lithium batteries of 4 joint series connection.It can control the conversion between the charging and discharging state of battery pack, has realized the standby sleep mode, can carry out overcurrent, overvoltage, under-voltage protection to battery pack.Its operation principle is as follows:
Battery links to each other with the voltage detecting circuit of inside by pin, and potential circuit detects the voltage of battery in real time, and compares with reference voltage, when overvoltage or undervoltage condition appear in battery, produces the control signal level.Control module after the time, receives this signal level one section controllable delay, cuts off the battery of discharge FET and carry out under-voltage protection when under-voltage, after battery rises to under-voltage critical voltage, finishes under-voltage detected state simultaneously; Cut off the battery of charging FET during overvoltage and carry out overvoltage protection, after battery drops to the overvoltage critical voltage, finish the overvoltage detected state simultaneously.The foreign current testing circuit detects in real time, the operating current of lithium battery, and when overcurrent condition appears in circuit, the signal level that output is corresponding.After one section constant time lag, this signal is input to internal control module by pin, and control module response and cut-out discharge and recharge FETs, and battery is carried out overcurrent protection.
At the energy storage led driver of above-mentioned metal-oxide-semiconductor switching reusable DC-DC module, described metal-oxide-semiconductor handover module comprises metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 and diode D11 and diode D12; Wherein the grid of metal-oxide-semiconductor Q4 links to each other with the charging control end of lithium battery monitoring management module, and source electrode links to each other with the output of AC-DC converter, and drain electrode links to each other with the anode of diode D11; The grid of metal-oxide-semiconductor Q5 links to each other with biasing resistor R17, and source electrode links to each other with the anode of lithium battery group, and drain electrode links to each other with the anode of D12; The anode of diode D11 and diode D12 links to each other with the drain electrode of metal-oxide-semiconductor Q5 with metal-oxide-semiconductor Q4 respectively, and negative electrode links to each other with the input of DC-DC converter.It can make system in the Alternating Current Power Supply pattern according to the residing actual conditions of system, directly switches between lithium battery group powering mode and the lithium battery group charge mode, guarantees the whole system operate as normal.
At the energy storage led driver of above-mentioned metal-oxide-semiconductor switching reusable DC-DC module, described DC-DC converter comprises Boost topography module and pulse width modulation controlled module.The Boost topography module adopts the Boost topological structure, is operated in continuous conduction mode (CCM).Boost converter topology structural circuit comprises input filter capacitor CIN, inductance L, power switch pipe M4, rectifier diode D13, output capacitance COUT, rectification circuit, load current detection network, inductive current detects network and output voltage detects network; Wherein input filter capacitor CIN one termination input, an end ground connection; The one termination input of inductance L, the anode of another termination rectifier diode D13; The anode of rectifier diode D13 connects inductance, and negative electrode meets output capacitance COUT; The negative electrode of output capacitance COUT one terminating diode D13, other end ground connection; The grid of rectification circuit one termination metal-oxide-semiconductor Q4, the other end links to each other with the GATE end of pulse width modulation controlled module; Load current detects network to be made up of resistance R 26 and resistance R 25, and an end of resistance R 25 links to each other with the FB pin of pulse width modulation controlled module, and the other end is connected with resistance R 26; One end of resistance R 26 is connected with resistance R 25, other end ground connection; Inductive current detects network and comprises resistance R 28 and resistance R 27, and an end of resistance R 28 links to each other with the CS of pulse width modulation controlled module end, and the other end links to each other with resistance R 27; One end of resistance R 27 links to each other with resistance R 28, other end ground connection; Output voltage detects network and comprises resistance R 31, resistance R 32 and capacitor C 15; The negative electrode of resistance R 31 1 terminating diode D13, other end connecting resistance R32, the other end ground connection of resistance R 32; One terminating resistor R32 of capacitor C 15, other end connecting resistance R24; The pulse width modulation controlled module comprises biasing circuit, undervoltage lockout circuit, soft starting circuit, oscillating circuit, error amplifier, slope compensation circuit, pulse-width modulation comparator, overvoltage protection error amplifier, thermal protection circuit, logic control circuit and gate driver circuit; Wherein biasing circuit links to each other with logic control circuit with undervoltage lockout circuit; Undervoltage lockout circuit links to each other with module port VIN with biasing circuit; Soft starting circuit links to each other with the negative terminal of oscillating circuit and error amplifier respectively; Slope compensation circuit links to each other with the pulse-width modulation comparator with module port CS; Positive input termination first reference voltage of error amplifier, negative input end connection module port FB, output termination pulse-width modulation comparator; The positive input terminal of pulse-width modulation comparator links to each other with slope compensation circuit, and negative input end links to each other with the output of error amplifier, output termination logic control circuit; The positive input terminal connection module port OVP of overvoltage protection error amplifier, negative input termination second reference voltage, output termination logic control circuit; Logic control circuit links to each other with gate driver circuit with biasing circuit, thermal protection circuit, oscillating circuit, pulse-width modulation comparator, overvoltage protection error amplifier respectively; Thermal protection circuit is connected with logic control circuit; The output of gate driver circuit one termination logic control circuit, the output port GATE of other end connection module.In addition, biasing circuit, undervoltage lockout circuit, soft starting circuit, oscillating circuit, error amplifier, slope compensation circuit, pulse-width modulation comparator, overvoltage protection error amplifier, thermal protection circuit, logic control circuit and gate driver circuit all link to each other with the port GND of module.
Therefore, the utlity model has following advantage: 1. reasonable in design, adopt the metal-oxide-semiconductor handover module, simple in structure and practical.2. do not contain MCU controller expensive and that circuit is complicated, cost is low.3. in powering mode, all adopt the DC-DC converter, obtained stable constant-current source, make the LED can long-life work under the environment of health.
Description of drawings
Figure 1 shows that a kind of metal-oxide-semiconductor switches the energy storage led driver overall diagram of reusable DC-DC module.
Figure 2 shows that AC-DC converter circuit schematic diagram.
Figure 3 shows that the functional block diagram of the sheet inner control module of AC-DC converter.
Figure 4 shows that metal-oxide-semiconductor handover module, lithium battery group and lithium battery monitoring management circuit figure.
Figure 5 shows that the internal frame diagram of lithium battery monitoring management module.
Figure 6 shows that the circuit theory diagrams of DC-DC converter.
Figure 7 shows that the circuit theory diagrams of control module pulse width modulating chip in the DC-DC converter.
Embodiment
For more well-known explanation the purpose of this utility model, technical scheme and advantage, below in conjunction with drawings and Examples the utility model is further detailed.
A kind of energy storage led driver of metal-oxide-semiconductor switching reusable DC-DC module as shown in Figure 1, it is characterized in that, comprise input connect AC signal and with AC signal convert to AC-DC converter, the store electrical energy of direct current signal lithium battery group and lithium battery monitoring management circuit, select the metal-oxide-semiconductor handover module of powering mode and convert the direct voltage of AC-DC converter and lithium battery group and the output of lithium battery monitoring management circuit to DC-DC converter that constant-current source is supplied with the LED illuminating lamp; Wherein, the AC-DC converter links to each other with the metal-oxide-semiconductor handover module with lithium battery monitoring management circuit with the lithium battery group; The lithium battery group links to each other with the metal-oxide-semiconductor handover module with the AC-DC converter with lithium battery monitoring management module; The metal-oxide-semiconductor handover module links to each other with lithium battery monitoring management circuit, AC-DC converter and DC-DC converter with the lithium battery group; The DC-DC converter links to each other with the LED illuminating lamp with the metal-oxide-semiconductor handover module.
Fig. 2 is the circuit diagram of AC-DC converter, is made up of main topography module and sheet inner control module, and the circuit outside the sheet inner control module all belongs to main topography module.
The pin of sheet inner control module is respectively the driving pin GATE of energization pins VDD, soft start pin STP, grounding pin GND, voltage feedback pin INV, current feedback pin CS and power switch pipe.
Main topography module adopts the inverse-excitation type translation circuit of limit, source feedback form; be operated under the discontinuous conduction mode (DCM), comprise full bridge rectifier, input filter circuit, transformer T1, whole filter circuit, voltage detecting circuit, current detection circuit, power switch pipe Q1, rectification circuit and clamping protective circuit.As shown in Figure 2, the embodiment of main topography module is as follows:
Diode D1, D2, D3 and D4 form full bridge rectifier, and the high-voltage AC signal of importing main topography module is converted to the bigger high-voltage dc signal of ripple.
Input filter circuit is made up of resistance R 1, inductance L 1, L3 and capacitor C 1, C2, is used for reducing the ripple of high-voltage dc signal.It is big capacitor C 4 chargings that this high-voltage dc signal passes through behind resistor network R2 and the R3, and the voltage of C4 is input to sheet inner control module by VDD pin and STP pin, is used for power supply and the soft start of sheet inner control module.After treating that output is stable, by the feedback voltage of limit, source secondary coil, be sheet inner control module for power supply by diode D6 and resistance R 11.
Input filter circuit links to each other with limit, the source primary coil of transformer T1, and the other end of limit, source primary coil links to each other with the drain electrode of power switch pipe Q1.The grid of power switch pipe Q1 links to each other by the GATE pin of rectification circuit with sheet inner control module, conducting and the shutoff of the high-frequency switching signal control power switch pipe Q1 of GATE pin output.
Transformer T1 controls the size of output voltage by the turn ratio of limit, source primary coil and limit, source secondary coil, thereby high-voltage signal is converted to low-voltage signal.The turn ratio of limit, source secondary coil and limit, source subgrade coil is being controlled the anti-voltage swing that swashs to limit, source subgrade coil, and the voltage detecting network that is connected to limit, source subgrade coil so just can reflect the situation of output loading.
The voltage detecting network that links to each other with limit, source subgrade coil is made up of resistance R 7, R8 and diode D7.The INV pin feeds back to sheet inner control module with the voltage on the R8, changes the constant voltage value of the resistance value ratio adjustable output voltage of R7 and R8.
Current detection circuit is made up of with R11 resistance R 12, and links to each other with the source electrode of power switch pipe Q1, for detection of the electric current on the primary coil of limit, source.The CS pin feeds back to sheet inner control module with the voltage on the R12, and the resistance value that changes R12 can be regulated the amplitude of exporting constant current.
Voltage detecting circuit and current detection circuit are input to sheet inner control module with feedback signal, are used for pulsewidth and the frequency of control switch signal.
Current rectifying and wave filtering circuit is made up of diode D8, capacitor C 5, C6, C7 and resistance R 13, R14, and the high frequency low voltage signal that the transformer transmission can be come is converted to dc low-voltage signal.Limit, the source primary coil storage power of transformer T1 when switching tube Q1 conducting, this moment, diode D8 oppositely ended, and did not have electric current to flow through in limit, the source secondary coil of transformer T1.Capacitor C 6 and C7 discharge this moment is as the output current of AC-DC converter.When switching tube Q1 disconnects, diode D8 forward conduction, energy stored is transferred to limit, source secondary coil by transformer in the primary coil of limit, source, so that output current to be provided, and is capacitor C 6, C7 charging.In the high-speed switch process of power switch pipe Q1, the output of main topography module will form low-voltage dc signal like this,, thus realize that civil power is to the conversion of low-voltage DC.
Rectification circuit is made up of R9 and R10, and the switching signal of sheet inner control module output is carried out rectification, makes the conducting of power switch pipe Q1 and shutoff be able to accurate control.
When switching tube Q1 switched to disconnection by conducting, the two ends of limit, source primary coil can produce peak voltage and induced voltage.Clamping protective circuit is made up of resistance R 5, R6, diode D5 and capacitor C 3, can the voltage at primary coil two ends, limit, source be absorbed and clamper, and Q1 is not damaged with the protection power switch pipe.
Sheet inner control module has multiple mode of operation, comprises the CC/CV(constant current/constant voltage) pattern and pulse-width modulation/PFM(pulse width modulation/pulse frequency modulated) pattern.As shown in Figure 3, sheet inner control module comprises biasing circuit, undervoltage lockout circuit (UVLO), soft starting circuit (Soft Start), gate driver circuit, lead-edge-blanking circuit (LEB), control circuit, pulse width modulation circuit (pulse-width modulation), clock circuit (CLK), frequency jitter circuit, error amplifier (EA), sampling hold circuit, current foldback circuit (OCP).The embodiment of sheet inner control module is as follows:
The VDD pin links to each other with undervoltage lockout circuit (UVLO) with biasing circuit, and biasing circuit is converted to the 5V burning voltage with the VDD pin voltage, is the on-chip circuit power supply.Undervoltage lockout circuit (UVLO) links to each other with biasing circuit again when vdd voltage is lower than lock threshold UVLO (ON), and control biasing circuit shut-off circuit is higher than start-up circuit when opening threshold value UVLO (OFF).
When circuit just starts, the soft starting circuit that is connected with the STP pin (Soft Start) is closed feedback voltage signal and feedback current signal to the pulse-width modulation of switching signal by pulse width modulation circuit (pulse-width modulation), the pulsewidth of output switching signal is increased gradually, output voltage is step and rises, and the electric capacity in the circuit slowly charges to prevent excessive peak current simultaneously.
During the circuit operate as normal, control circuit sends control signal for pulse width modulation circuit (pulse-width modulation), be used for selecting for use corresponding modulation signal output, modulation signal after gate driver circuit strengthens driving force as switching signal, output to the grid of external power switching tube Q1 by the GATE pin, be used for conducting and the shutoff of control switch.
Control circuit is connected with sampling hold circuit.Control circuit is analyzed the detection voltage by the sampling hold circuit input, to judge the load state of AC-DC converter.The control circuit working is in the CC pattern during heavy load, in/during slight load the control circuit working in the CV pattern.The error voltage of error amplifier under the CC pattern (EA) output is stabilized in maximum, and then the frequency stabilization of control clock circuit (CLK) output clock is at maximum 60KHz.At this moment, control circuit sends control signal for pulse width modulation module (pulse-width modulation), selects the pulse duration of current feedback signal modulation switch signal for use.Under the CV pattern, error voltage signal is by the frequency of clock circuit (CLK) modulation switch signal, control circuit sends control signal for pulse width modulation module (pulse-width modulation), selects for use the fixed duty cycle frequency variation signal of clock circuit (CLK) as switching signal.When load voltage was too high, clock frequency reduced, otherwise clock frequency increases.
Sampling hold circuit is connected with control circuit, and each sampling period gathers once stable feedback voltage signal and keeps.
The inverting input of error amplifier (EA) is connected with sampling hold circuit, and normal phase input end is connected to the reference voltage of 2V.The error voltage of error amplifier output has reflected the output voltage of AC-DC module and the degrees of offset of reference voltage.
Lead-edge-blanking circuit (LEB) is connected with current foldback circuit (OCP) with clock circuit (CLK) respectively, is used for eliminating the interference by the current detection signal peak current of CS pin input.
Current foldback circuit (OCP) can be judged the current feedback signal of being imported by lead-edge-blanking circuit (LEB) in each clock cycle; if the electric current of external circuit is excessive or when short circuit occurring; just close switching signal by pulse width modulation module (pulse-width modulation), to realize the overcurrent protection function of Cycle by Cycle.
Frequency jitter circuit links to each other with clock circuit, is used for modulation main switch frequency, produces a series of sideband around the dominant frequency band, thereby noise energy is distributed on the very wide frequency band, to have reduced EMI.
Fig. 4 is lithium battery group and lithium battery monitoring management circuit and metal-oxide-semiconductor handover module circuit diagram.Wherein lithium battery group and lithium battery monitoring management circuit: P type metal-oxide-semiconductor Q2 and Q3 are respectively discharge and charge switch, their grid all links to each other with 3 ports with 1 end of lithium battery control module, drain electrode links to each other with the output of AC-DC and the anode of battery pack respectively, and source electrode interconnects; Resistance R 14 (R15) and light-emitting diode D9(D10) be cascaded, head and the tail respectively with the output and Q2(Q3 of AC-DC) grid link to each other, it has the effect of discharge (charging) indicator light; The positive pole of the termination battery pack of capacitor C 10 ~ C13, the other end link to each other with resistance R 19 ~ R22 respectively; The positive pole of lithium battery BT1 ~ BT4 links to each other with resistance R 19 ~ R22 respectively, and negative pole links to each other with R20 ~ R23 respectively; Resistance R 18, the end of capacitor C 8 and C9 link to each other with 4 ports, 5 ports and 6 ports of lithium battery monitoring management module respectively, and the other end all links to each other with ground.The internal frame diagram of lithium battery monitoring management module as shown in Figure 5, this module links to each other with peripheral circuit by 13 pins.Being implemented as follows of this functions of modules:
Voltage detecting and protection: pin 13,7 connects the both positive and negative polarity of battery pack respectively, while 7 pin ground connection, and pin 12,11,10,9 connects the positive pole of 4 batteries (B1, B2, B3, B4) respectively.Resistance R N1 ~ RN16, zero-crossing comparator A1 ~ A8, voltage stabilizing didoe DN1 ~ BN7, internal reference source VSN1 ~ VSN4 between above-mentioned 6 pins and control module have formed voltage detecting circuit.Comparator A
(2n-1)Compare battery B
nVoltage and overvoltage critical value, as battery B
nWhen being in overvoltage condition, A
(2n-1)The output high level drives or door OR1 output high level.Control module receives this high level after through overvoltage time of delay, cuts off charging FET and carries out overvoltage protection.When conditions permit, connect discharge FET simultaneously, battery is externally discharged, when cell voltage is lower than the overvoltage critical value, finish the overvoltage detected state.Comparator A
(2n)Compare battery B
nVoltage and under-voltage critical value, as battery B
nWhen being in under-voltage condition, A
(2n)The output high level drives or door OR1 output high level.Control module receives this high level after through overvoltage time of delay, cuts off discharge FET and carries out under-voltage protection.When conditions permit, connect discharge FET simultaneously, be battery charge, when cell voltage is higher than under-voltage critical value, finish under-voltage detected state.To with B
nOvervoltage critical value: VSN
n* (1+RN
(4n-3)/ RN
(4n-2)); Under-voltage critical value: VSN
n* (1+RN
(4n-1)/ RN
(4n)).
Current detecting and protection: pin 2, the 4th, current detecting input pin, foreign current testing circuit be detected current signal, be converted to voltage signal after, feed back to control module by these two pins.The current detection signal of these two pin inputs is compared with reference voltage by comparator A9, A10, after a fixing time of delay, sends control module to.When comparator A9, A10 output when having high level, indication circuit is in over-current state, and control module is cut off after receiving this signal and discharged and recharged FET and carry out current protection.
Control function pin: pin 1 is charging FET control port, during this pin output high level, cuts off charging FET, and batteries charging stops.Open charging FET during output low level, be the charging of lithium battery group.
The level of pin 5,6 inputs are being controlled overvoltage respectively and are being detected time of delay with under-voltage detection.
Pin 8 is the external control input port, can pass through this port controlling lithium battery monitoring management module, to realize the switching between lithium battery group charging and discharging state.
Described metal-oxide-semiconductor handover module is made up of P type metal-oxide-semiconductor Q4 and Q5, divider resistance R16 and R17 and diode D11 and D12.Wherein, R16 and R17 series connection, the end of R16 links to each other with the output of AC-DC, and the other end links to each other with R17; The end of R17 links to each other with R16, and the other end links to each other with ground; The source electrode of Q4 links to each other with the output of AC-DC, and drain electrode links to each other with D11, and grid links to each other with the grid of Q2; The source electrode of Q5 links to each other with the positive pole of battery pack, and drain electrode links to each other with D12, and grid links to each other with R17; The positive pole of D11 and D12 links to each other with the drain electrode of Q4 and Q5 respectively, and negative pole links to each other with the input of DC-DC.
Fig. 6 is the circuit theory diagrams of DC-DC converter.The DC-DC converter is made up of Boost topography module and pulse width modulation controlled module.
Pin on the pulse width modulation controlled module is respectively that energization pins VIN, load current feedback pin FB, switching current detect pin CS, output voltage detects pin OVP, power switch pipe control pin GATE and grounding pin GND.
The Boost topography module adopts the Boost topological structure, is operated in continuous conduction mode (CCM).Mainly comprise input filter capacitor CIN, inductance L, power switch pipe M4, rectifier diode D13, output capacitance COUT, rectification circuit, load current detection network, inductive current detection network and output voltage and detect network.Being implemented as follows of Boost topography module function:
After the 12V dc power signal of outside input at first passes through input capacitance CIN filtering High-frequency Interference component, give capacitor C 14 chargings by resistance R 33, the voltage on the capacitor C 14 is given the pulse width modulation controlled module for power supply by the VIN pin of pulse width modulation controlled module.
One of inductance L terminates to power supply, and namely the positive pole with input capacitance CIN links to each other, and the other end links to each other with the drain electrode branch road of power switch pipe M4, the anode branch road of rectifier diode D13 simultaneously.The source electrode of power switch pipe M4 with detect the resistance R 27 back ground connection of connect, when power switch pipe M4 conducting, this branch road conducting, among Fig. 6 A point current potential closely, power supply signal is added on the inductance L, the inductance L storage power, inductive current is the linearity rising.When closing, power switch pipe M4 has no progeny, A point current potential begins to rise among Fig. 6, be tending towards output voltage, when A point current potential is higher than the power supply potential of the inductance L other end, the inductance L reverse bias also releases energy, inductive current keeps former direction and is linear descending, until next clock cycle, and power switch pipe M4 conducting again.The negative electrode of rectifier diode D13 links to each other with the positive pole of output filter capacitor COUT and the positive output end of DC-DC converter simultaneously.Power switch pipe M4 blocking interval, when A point current potential was higher than rectifier diode D13 cathode potential among Fig. 6, rectifier diode D13 forward conduction, inductive current flowed to load and output capacitance COUT, and when charging for COUT, output voltage is linear and rises.When power switch pipe M4 conducting, among Fig. 6 A point current potential closely, rectifier diode D13 oppositely ends, output capacitance COUT discharge makes output voltage be linear and descends.Because conducting and the turn-off speed of power switch pipe are very fast, the capacitance of COUT is bigger, so the ripple that is caused by the linear rise and fall of output voltage is very little, can be considered constant current and exports.
Rectification circuit is made up of with R29 resistance R 30, and the assurance switching signal can accurately be controlled conducting and the shutoff of power switch pipe M4.Wherein the end of R30 links to each other with the GATE pin of pulse width modulation controlled module; The other end links to each other with the grid of R29, power switch pipe M4 simultaneously; The other end of R29 links to each other with the source electrode of M4.Load current detects network and is connected with load by resistance R 26() form with resistance R 25, by the FB pin load current feedback signal is input to the pulse width modulation controlled module, change the steady state value that the R26 resistance can be regulated output current.Inductive current detects network to be made up of with R27 resistance R 28, by the CS pin inductor current feedback signal is input to the pulse width modulation controlled module.Output voltage detects network to be made up of resistance R 31, R32 and capacitor C 15, by the OVP pin voltage after partial feedback signal is input to the pulse width modulation controlled module.
The pulse width modulation controlled module adopts current control mode.As shown in Figure 7, the pulse width modulation controlled module comprises biasing circuit, undervoltage lockout circuit (UVLO), soft starting circuit (Soft Start), oscillating circuit (OSC), error amplifier (EA), slope compensation circuit, pulse-width modulation comparator, overvoltage protection error amplifier, thermal protection circuit, logic control circuit and gate driver circuit.Being implemented as follows of pulse width modulation controlled functions of modules:
The VIN pin links to each other with biasing circuit, undervoltage lockout circuit (UVLO).Biasing circuit is converted to stable 5V direct current signal with the signal of VIN input, powers to internal module.Undervoltage lockout circuit (UVLO) links to each other with biasing circuit, when VIN is lower than lock threshold UVLO (ON), closes the pulse width modulation controlled module by biasing circuit, is higher than to start the pulse width modulation controlled module when opening threshold value UVLO (OFF).Oscillating circuit (OSC) links to each other with logic control circuit with soft starting circuit (Soft Start), slope compensation circuit respectively, for circuit provides frequency and the fixing clock signal of pulsewidth.The output of soft starting circuit (Soft Start) links to each other with the normal phase input end of error amplifier (EA), for error amplifier provides reference voltage.When circuit just started, the pulse width modulation controlled module at first entered the soft start state, and reference voltage is slowly risen by 0 beginning, and the pulse duration of switching signal increases gradually, and output capacitance is able to slow charging, produced excessive peak current to prevent circuit.To be stabilized in first reference voltage constant for reference voltage after some clock cycle, and circuit begins operate as normal.
The inverting input of error amplifier (EA) links to each other with the FB pin, error between load current feedback signal and first reference voltage is exaggerated the back as error voltage signal, output to the inverting input of pulse-width modulation comparator, be used for the pulse duration of modulation switch signal.
Slope compensation circuit links to each other with the CS pin, and after the inductor current feedback signal was adjusted, the sawtooth signal stack of importing with oscillating circuit formed slope compensation signal, and outputs to the normal phase input end of pulse-width modulation comparator, as reference voltage.When the switching signal duty ratio surpassed 50%, slope compensation circuit can be eliminated the subharmonic oscillation that external disturbance causes, to strengthen the stability of system.The pulse-width modulation comparator compares error voltage signal and slope compensation signal, obtains the modulated switching signal of pulse duration, and outputs to logic control circuit.
The overvoltage protection error amplifier links to each other with the OVP pin, load voltage feedback signal and second reference voltage is compared, and the result is delivered to logic control circuit.When output voltage surpassed predetermined threshold value, logic control circuit was just closed output, to realize the function of overvoltage protection.
The thermistor of thermal protection circuit inside is the signal of telecommunication with temperature transition, and compares with reference voltage, when temperature surpasses preset threshold value, outputs a control signal to logic control circuit, closes output.
What link to each other with logic control circuit has thermal protection circuit, overvoltage protection error amplifier, biasing circuit and a pulse-width modulation comparator.In the circuit working process, logic control circuit is judged the feedback signal of thermal protection circuit and overvoltage protection error amplifier constantly, in case temperature is too high or output voltage when too high, exports with regard to shut-off circuit.Biasing circuit is logic control circuit power supply, as long as the power supply of VIN pin input is normal, does not have lockedly, just can give the logic control circuit normal power supply, otherwise logic control circuit can not start.When the voltage of temperature, output voltage, the input of VIN pin all is in the default safe range, the switching signal that logic control circuit is imported with regard to gating pulse-width modulation comparator, and export to gate driver circuit, to strengthen the driving force of switching signal.Gate driver circuit links to each other with the GATE pin again, and the switching signal after by the GATE pin driving force being strengthened outputs to outside topological circuit.
Specify the whole system operation principle below:
In the Alternating Current Power Supply pattern: the AC-DC converter converts ac high-voltage to dc low-voltage, because this moment, battery pack was full of electricity, and the 1 port output high level of lithium battery monitoring management module, Q3 turn-offs, and charging indicator light D10 extinguishes; 3 port output low levels of lithium battery monitoring management module, Q4 is opened, and the output voltage of AC-DC converter arrives the DC-DC converter by Q4, powers to LED then; The grid of Q5 is because the dividing potential drop of R16 and R17 is in high level state, so turn-off at this moment.In battery-powered pattern: do not have civil power this moment, and the AC-DC variator is output as level, so the grid of Q5 is low level, Q5 is opened, and this moment, the voltage of lithium battery group arrived the DC-DC converter by Q5, powered to LED then.At lithium battery group charge mode: 1 port of lithium battery monitoring management module and 3 ports are output low level and high level respectively, so Q4 and Q2 turn-off, D9 extinguishes, and Q3 is opened, and charging indicator light D10 brightens.And Q5 also is in off state under the effect of dividing potential drop, and this moment, the output voltage of AC-DC converter charged to the lithium battery group by D8 and Q3.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. a metal-oxide-semiconductor switches the energy storage led driver of reusable DC-DC module, it is characterized in that, comprise input connect AC signal and with AC signal convert to AC-DC converter, the store electrical energy of direct current signal lithium battery group and lithium battery monitoring management circuit, select the metal-oxide-semiconductor handover module of powering mode and convert the direct voltage of AC-DC converter and lithium battery group and the output of lithium battery monitoring management module to DC-DC converter that constant-current source is supplied with the LED illuminating lamp; Wherein, the AC-DC converter links to each other with the metal-oxide-semiconductor handover module with lithium battery monitoring management circuit with the lithium battery group; The lithium battery group links to each other with the metal-oxide-semiconductor handover module with the AC-DC converter with lithium battery monitoring management circuit; The metal-oxide-semiconductor handover module links to each other with lithium battery monitoring management circuit, AC-DC converter and DC-DC converter with the lithium battery group; The DC-DC converter links to each other with the LED illuminating lamp with the metal-oxide-semiconductor handover module.
2. metal-oxide-semiconductor according to claim 1 switches the energy storage led driver of reusable DC-DC module, it is characterized in that described AC-DC converter comprises sheet inner control module and the main topography module that is connected with sheet inner control module; Sheet inner control module comprises biasing circuit, undervoltage lockout circuit, soft starting circuit, gate driver circuit, lead-edge-blanking circuit, control circuit, pulse width modulation circuit, clock circuit, frequency jitter circuit, error amplifier, sampling hold circuit and current foldback circuit; Biasing circuit links to each other with power vd D, control circuit, gate driver circuit and undervoltage lockout circuit; Undervoltage lockout circuit links to each other with biasing circuit with power vd D; Soft starting circuit links to each other with module port STP with pulse-width modulation circuit; Gate driver circuit one termination pulse width modulation circuit links to each other, and the other end links to each other with the GATE end; The lead-edge-blanking circuit links to each other with clock circuit, current foldback circuit and module port CS simultaneously; Control circuit links to each other with pulse width modulation circuit with sampling hold circuit; Clock circuit links to each other with pulse width modulation circuit with frequency jitter circuit, error amplifier, lead-edge-blanking circuit; The negative terminal of error amplifier links to each other with sampling hold circuit, and anode links to each other with the power supply of 2V, and output links to each other with clock circuit; Frequency jitter circuit links to each other with clock circuit; Sampling hold circuit links to each other with control circuit, error amplifier and module port INV; Current foldback circuit links to each other with pulse width modulation circuit with the lead-edge-blanking circuit; In addition, biasing circuit, undervoltage lockout circuit, soft starting circuit, gate driver circuit, lead-edge-blanking circuit, control circuit, pulse width modulation circuit, clock circuit, frequency jitter circuit, error amplifier, sampling hold circuit and current foldback circuit all link to each other with module port GND; Main topography module comprises full bridge rectifier, input filter circuit, transformer T1, current rectifying and wave filtering circuit, voltage detecting circuit, current detection circuit, power switch pipe Q1, rectification circuit and clamping protective circuit; One end of full bridge rectifier links to each other with AC-input voltage, and an end connects input filter circuit; Input filter circuit one termination full bridge rectifier, the other end links to each other with current rectifying and wave filtering circuit; Current rectifying and wave filtering circuit one end links to each other with input filter circuit, and the other end links to each other with transformer T1; Voltage detecting circuit one end links to each other with transformer T1, and an end links to each other with the STP end of sheet inner control module; Current detection circuit one end links to each other with transformer T1, and an end links to each other with the CS end of sheet inner control module; The drain electrode of power switch pipe Q1 links to each other with transformer T1, and grid links to each other with the GATE port of sheet inner control module by resistance R 9, and source electrode is through resistance R 12 ground connection; Rectification circuit one end links to each other with transformer, an end output circuit.
3. metal-oxide-semiconductor according to claim 2 switches the energy storage led driver of reusable DC-DC module, it is characterized in that described lithium battery group and lithium battery monitoring management circuit comprise lithium battery group, lithium battery monitoring management module, voltage detecting circuit, current detection circuit, overcharge and over-discharge protection circuit; Voltage detecting circuit links to each other with lithium battery monitoring management module with the lithium battery group respectively; Current detection circuit links to each other with lithium battery monitoring management module with the lithium battery group respectively; Overcharge with over-discharge protection circuit and be made up of the metal-oxide-semiconductor switch, grid all links to each other with lithium battery monitoring management module, and drain electrode links to each other with the lithium battery group with the output of AC-DC respectively, and source electrode interconnects.
4. metal-oxide-semiconductor according to claim 3 switches the energy storage led driver of reusable DC-DC module, it is characterized in that described metal-oxide-semiconductor handover module comprises metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 and diode D11 and diode D12; Wherein the grid of metal-oxide-semiconductor Q4 links to each other with the charging control end of lithium battery monitoring management module, and source electrode links to each other with the output of AC-DC converter, and drain electrode links to each other with the anode of diode D11; The grid of metal-oxide-semiconductor Q5 links to each other with biasing resistor R17, and source electrode links to each other with the anode of lithium battery group, and drain electrode links to each other with the anode of D12; The anode of diode D11 and diode D12 links to each other with the drain electrode of metal-oxide-semiconductor Q5 with metal-oxide-semiconductor Q4 respectively, and negative electrode links to each other with the input of DC-DC converter.
5. metal-oxide-semiconductor according to claim 4 switches the energy storage led driver of reusable DC-DC module, it is characterized in that described DC-DC converter comprises Boost converter topology structural circuit and the control module pulse width modulating chip that is connected with Boost converter topology structural circuit; Boost converter topology structural circuit comprises input filter capacitor CIN, inductance L, power switch pipe M4, rectifier diode D13, output capacitance COUT, rectification circuit, load current detection network, inductive current detects network and output voltage detects network; Wherein input filter capacitor CIN one termination input, an end ground connection; The one termination input of inductance L, the anode of another termination rectifier diode D13; The anode of rectifier diode D13 connects inductance, and negative electrode meets output capacitance COUT; The negative electrode of output capacitance COUT one terminating diode D13, other end ground connection; The grid of rectification circuit one termination metal-oxide-semiconductor Q4, the other end links to each other with the GATE end of pulse width modulation controlled module; Load current detects network to be made up of resistance R 26 and resistance R 25, and an end of resistance R 25 links to each other with the FB pin of pulse width modulation controlled module, and the other end is connected with resistance R 26; One end of resistance R 26 is connected with resistance R 25, other end ground connection; Inductive current detects network and comprises resistance R 28 and resistance R 27, and an end of resistance R 28 links to each other with the CS of pulse width modulation controlled module end, and the other end links to each other with resistance R 27; One end of resistance R 27 links to each other with resistance R 28, other end ground connection; Output voltage detects network and comprises resistance R 31, resistance R 32 and capacitor C 15; The negative electrode of resistance R 31 1 terminating diode D13, other end connecting resistance R32, the other end ground connection of resistance R 32; One terminating resistor R32 of capacitor C 15, other end connecting resistance R24; The pulse width modulation controlled module comprises biasing circuit, undervoltage lockout circuit, soft starting circuit, oscillating circuit, error amplifier, slope compensation circuit, pulse-width modulation comparator, overvoltage protection error amplifier, thermal protection circuit, logic control circuit and gate driver circuit; Wherein biasing circuit links to each other with logic control circuit with undervoltage lockout circuit; Undervoltage lockout circuit links to each other with module port VIN with biasing circuit; Soft starting circuit links to each other with the anode of oscillating circuit and error amplifier respectively; Positive input termination first reference voltage of error amplifier, negative input end connection module port FB, output termination pulse-width modulation comparator; Slope compensation circuit links to each other with the pulse-width modulation comparator with module port CS; The positive input terminal of pulse-width modulation comparator links to each other with slope compensation circuit, and negative input end links to each other with the output of error amplifier, output termination logic control circuit; The positive input terminal connection module port OVP of overvoltage protection error amplifier, negative input termination second reference voltage, output termination logic control circuit; Logic control circuit links to each other with gate driver circuit with biasing circuit, thermal protection circuit, oscillating circuit, pulse-width modulation comparator, overvoltage protection error amplifier respectively; Thermal protection circuit is connected with logic control circuit; The output of gate driver circuit one termination logic control circuit, the output port GATE of other end connection module; In addition, biasing circuit, undervoltage lockout circuit, soft starting circuit, oscillating circuit, error amplifier, slope compensation circuit, pulse-width modulation comparator, overvoltage protection error amplifier, thermal protection circuit, logic control circuit and gate driver circuit all link to each other with the port GND of module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202686401U CN203225573U (en) | 2013-05-16 | 2013-05-16 | Power-storing LED driver employing switching MOS tube and DC-DC module capable of multiplexing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202686401U CN203225573U (en) | 2013-05-16 | 2013-05-16 | Power-storing LED driver employing switching MOS tube and DC-DC module capable of multiplexing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225573U true CN203225573U (en) | 2013-10-02 |
Family
ID=49252563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202686401U Withdrawn - After Issue CN203225573U (en) | 2013-05-16 | 2013-05-16 | Power-storing LED driver employing switching MOS tube and DC-DC module capable of multiplexing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225573U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248108A (en) * | 2013-05-16 | 2013-08-14 | 常州矽能电子科技有限公司 | LED (Light Emitting Diode) driver with MOS (Metal Oxide Semiconductor) tube switching module and reusable DC (Direct Current)-DC (Direct Current) module |
| CN103716964A (en) * | 2013-12-30 | 2014-04-09 | 常州矽能电子科技有限公司 | LED energy storage drive system with multiplex AC-DC converter |
| CN104159367A (en) * | 2014-07-30 | 2014-11-19 | 华南理工大学 | LED light modulator based on PAM and PWM and dimming method of LED light modulator based on PAM and PWM |
| CN108886858A (en) * | 2016-02-18 | 2018-11-23 | 伊顿智能动力有限公司 | The non-firm power of light source and control in lamps and lanterns |
| CN110348354A (en) * | 2019-07-02 | 2019-10-18 | 南京智睿能源互联网研究院有限公司 | A kind of power load identifying system, method and accommodation electricity usage management system |
| WO2020113837A1 (en) * | 2018-12-03 | 2020-06-11 | 深圳市裕富照明有限公司 | Power supply control device and lighting system |
| CN112224049A (en) * | 2020-12-11 | 2021-01-15 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | DC/DC conversion device and filtering method for hydrogen fuel cell power system |
| CN112688408A (en) * | 2020-12-28 | 2021-04-20 | 杭州电子科技大学 | Low-power-consumption ultrasonic energy collection circuit and use method thereof |
| CN113078698A (en) * | 2020-01-06 | 2021-07-06 | 杭州晋旗电子科技有限公司 | Electronic detonator energy storage capacitor charging control device, electronic detonator and system |
-
2013
- 2013-05-16 CN CN2013202686401U patent/CN203225573U/en not_active Withdrawn - After Issue
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248108B (en) * | 2013-05-16 | 2015-09-16 | 常州矽能电子科技有限公司 | Switch and the LED driver of reusable DC-DC module with metal-oxide-semiconductor |
| CN103248108A (en) * | 2013-05-16 | 2013-08-14 | 常州矽能电子科技有限公司 | LED (Light Emitting Diode) driver with MOS (Metal Oxide Semiconductor) tube switching module and reusable DC (Direct Current)-DC (Direct Current) module |
| CN103716964A (en) * | 2013-12-30 | 2014-04-09 | 常州矽能电子科技有限公司 | LED energy storage drive system with multiplex AC-DC converter |
| CN103716964B (en) * | 2013-12-30 | 2015-12-16 | 常州矽能电子科技有限公司 | There is the LED energy storage drive system of multiplex AC-DC converter |
| CN104159367A (en) * | 2014-07-30 | 2014-11-19 | 华南理工大学 | LED light modulator based on PAM and PWM and dimming method of LED light modulator based on PAM and PWM |
| CN108886858A (en) * | 2016-02-18 | 2018-11-23 | 伊顿智能动力有限公司 | The non-firm power of light source and control in lamps and lanterns |
| WO2020113837A1 (en) * | 2018-12-03 | 2020-06-11 | 深圳市裕富照明有限公司 | Power supply control device and lighting system |
| CN110348354A (en) * | 2019-07-02 | 2019-10-18 | 南京智睿能源互联网研究院有限公司 | A kind of power load identifying system, method and accommodation electricity usage management system |
| CN110348354B (en) * | 2019-07-02 | 2023-06-06 | 南京智睿能源互联网研究院有限公司 | Power utilization load identification system, method and dormitory power utilization management system |
| CN113078698A (en) * | 2020-01-06 | 2021-07-06 | 杭州晋旗电子科技有限公司 | Electronic detonator energy storage capacitor charging control device, electronic detonator and system |
| CN112224049A (en) * | 2020-12-11 | 2021-01-15 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | DC/DC conversion device and filtering method for hydrogen fuel cell power system |
| CN112224049B (en) * | 2020-12-11 | 2021-03-09 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | DC/DC conversion device and filtering method for hydrogen fuel cell power system |
| CN112688408A (en) * | 2020-12-28 | 2021-04-20 | 杭州电子科技大学 | Low-power-consumption ultrasonic energy collection circuit and use method thereof |
| CN112688408B (en) * | 2020-12-28 | 2022-06-14 | 杭州电子科技大学 | Low-power-consumption ultrasonic energy collection circuit and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103248108B (en) | Switch and the LED driver of reusable DC-DC module with metal-oxide-semiconductor | |
| CN203225573U (en) | Power-storing LED driver employing switching MOS tube and DC-DC module capable of multiplexing | |
| US7598703B2 (en) | Portable chargers having power factor correction capability for use with electric vehicles | |
| CN100553398C (en) | Solar energy high voltage sodium lamp controller based on single-stage inverter | |
| CN102917503B (en) | LED driver system with energy storage function | |
| CN103475061A (en) | Photovoltaic intelligent controller | |
| CN106849322A (en) | A kind of standby energy-storage system of intelligent domestic | |
| CN103260303A (en) | Portable lighting device, and method and controller for controlling power supply to load | |
| CN201976292U (en) | High-efficiency solar energy illuminating system | |
| CN102102841A (en) | High-efficiency solar lighting system | |
| CN202873150U (en) | Energy storage LED driver system | |
| CN204859706U (en) | Multi -functional emergency light power supply unit | |
| CN104393658A (en) | Energy management circuit | |
| CN201063531Y (en) | Power supply converting circuit and pulse width modulation controller | |
| CN101398142B (en) | Power supply system applying to LED | |
| CN203352471U (en) | Photovoltaic inverter-used single end flyback-type switching power supply primary-side circuit | |
| CN103094975A (en) | Storage battery charging circuit and light-emitting diode (LED) lamp thereof | |
| CN201846118U (en) | Intelligent multi-section constant current charger | |
| CN201774716U (en) | Constant-current driving power source for LED illumination | |
| CN203632943U (en) | LED energy storage driving system with reusable AC-DC converter | |
| CN207150902U (en) | A kind of LED drive circuit of compatible tape light switch | |
| CN202957639U (en) | High-efficiency charging and discharging control circuit | |
| CN201742112U (en) | Wind and solar energy supplementary power tracking controller based on feedback compensation | |
| CN201656537U (en) | Accumulator charger | |
| CN204707033U (en) | A kind of charge power supply of battery converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131002 Effective date of abandoning: 20150916 |
|
| RGAV | Abandon patent right to avoid regrant |