CN206790347U - Efficient direct current stabilized power source - Google Patents
Efficient direct current stabilized power source Download PDFInfo
- Publication number
- CN206790347U CN206790347U CN201720553263.4U CN201720553263U CN206790347U CN 206790347 U CN206790347 U CN 206790347U CN 201720553263 U CN201720553263 U CN 201720553263U CN 206790347 U CN206790347 U CN 206790347U
- Authority
- CN
- China
- Prior art keywords
- circuit
- triode
- direct current
- wholly
- power source
- 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.)
- Expired - Fee Related
Links
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Amplifiers (AREA)
Abstract
A kind of power supply is the utility model is related to, especially a kind of efficient direct current stabilized power source, belongs to the technical field of dc source.According to technical scheme provided by the utility model, the efficient direct current stabilized power source, including direct voltage source E, the positive terminal of the direct voltage source E is connected with wholly-controled device VT drain electrode end, wholly-controled device VT source terminal is connected with fly-wheel diode VD cathode terminal and inductance L one end, the inductance L other end is connected with electric capacity C one end, and the electric capacity C other end is connected with the negative pole end of fly-wheel diode VD anode tap and direct voltage source E；Also include being used for the sample circuit to output voltage current sampling, the sample circuit is connected with controller, and controller is connected by PWM drive circuit with wholly-controled device VT gate terminal.The utility model is compact-sized, and power attenuation is small, and output is stable, wide adaptation range, securely and reliably.
Description
Technical field
A kind of power supply is the utility model is related to, especially a kind of efficient direct current stabilized power source, belongs to the technology of dc source
Field.
Background technology
D.C. regulated power supply is the indispensable part of various electronic equipments, and the quality of its performance is directly connected to electricity
The precision of sub- equipment.Power source performance is very big on influences such as the service life of circuit, electronic instrument and electronic equipment, performances,
It is higher to the performance requirement of power supply especially in the circuit with inductive load and equipment (such as motor).Based on this, countries in the world
Different requirements are proposed to power supply product one after another and have formulated a series of Product Precision standard.Only meet product standard,
Market can be entered.With the development of economic globalization, the pass of disengaging could be obtained by meeting the product of international standard.
At present, the main Types of DC stable power supply on the market have：220V civil powers input direct-current exports adjustable, certain model
Direct current input and output non-adjustable (typically being made using voltage stabilizing chips such as LM78xx), a range of direct current input and output enclosed can
Adjust and (typically made of adjustable circuit of three-terminal voltage-stabilizing integrated, such as LM317), but input as DC voltage fluctuation and output voltage electricity
It is rare to flow adjustable dc source.
In a practical situation, differ surely find everywhere can be equipment continued power power supply, then sustainable continuation of the journey,
The battery of Large Copacity has become stand-by power supply first choice.It is contemplated that the reason such as cost, the output voltage of most of battery
And it is unstable, and its voltage can also decline therewith with the decline of electricity；On the other hand, the specification of battery is also different.That
In order to improve the compatibility of input, design a direct current input and fluctuate and output voltage, current adjustment, and it is high-precision straight
Stream stabilized power source seems particularly necessary.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of efficient direct current stabilized power source,
Its is compact-sized, and power attenuation is small, and output is stable, wide adaptation range, securely and reliably.
According to technical scheme provided by the utility model, the efficient direct current stabilized power source, including direct voltage source E, institute
The positive terminal for stating direct voltage source E is connected with wholly-controled device VT drain electrode end, wholly-controled device VT source terminal and afterflow two
One end connection of pole pipe VD cathode terminal and inductance L, the inductance L other end are connected with electric capacity C one end, and electric capacity C's is another
End is connected with fly-wheel diode VD anode tap and direct voltage source E negative pole end；
Also include being used for the sample circuit to output voltage current sampling, the sample circuit is connected with controller, is controlled
Device is connected by PWM drive circuit with wholly-controled device VT gate terminal.
The wholly-controled device VT uses MOSFET element, and fly-wheel diode VD uses Schottky diode.
The optical coupling isolation circuit, transistor amplifier circuit and grid emitter-base bandgap grading that the PWM drive circuit includes being sequentially connected are protected
Protection circuit, the push-pull configuration that transistor amplifier circuit is formed using NPN triode with PNP triode, grid emitter-base bandgap grading protection circuit are adopted
Use Transient Suppression Diode.
The controller is connected with the protection circuit for over-voltage over-current protection, and the protection circuit includes auxiliary reclay
And protection triode, protection triode use NPN triode, protect the base terminal of triode to be connected with controller, protection three
Pole pipe is grounded by protective resistance, the coil of auxiliary reclay with protecting the colelctor electrode of triode to be connected, auxiliary reclay it is normal
Contact is opened to connect with load.
Key circuit and display circuit are also associated with the controller.
The advantages of the utility model：At any time to being corrected, overall efficiency, precision are again high, bigger in voltage pulsation
Also high-precision, efficient, stabilization, adjustable direct voltage source can be obtained in the case of dc source (such as battery etc.)
Or current source.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the structured flowchart of the utility model PWM drive circuit.
Embodiment
With reference to specific drawings and examples, the utility model is described in further detail.
As shown in Figure 1：In order to realize stable direct current output, the utility model includes direct voltage source E, the direct current
Voltage source E positive terminal is connected with wholly-controled device VT drain electrode end, wholly-controled device VT source terminal and fly-wheel diode VD
Cathode terminal and inductance L one end connection, the inductance L other end be connected with electric capacity C one end, the electric capacity C other end and continues
Flow the negative pole end connection of diode VD anode tap and direct voltage source E；
Also include being used for the sample circuit to output voltage current sampling, the sample circuit is connected with controller, is controlled
Device is connected by PWM drive circuit with wholly-controled device VT gate terminal.
Specifically, because MOSFET element not only has self-switching-off capability, and have that driving power is small, switching speed is high, nothing
Second breakdown, the features such as safety operation area is wide, because it is easy to driving and switching frequency may be up to 500kHz, particularly suitable for high frequency
Change power electronic equipment, be such as applied to DC/DC and convert, Switching Power Supply, portable electric appts, the electricity such as Aero-Space and automobile
In sub- electric equipment, both ends do not have voltage drop when perfect switch turns on, and device does not have a current flowing when turning off, therefore relative to
Resistance or linear work transistor partial pressure mode, efficiency substantially increase, and therefore, wholly-controled device VT uses MOSFET element.
SMPS (SwitchModePowerSupply) loss largely comes from switching device (MOSFET and diode),
Other fraction loss comes self-inductance and electric capacity.Therefore, to reduce switching loss, should try one's best reduces working frequency；To avoid producing
Raw noise, working frequency should not be in audio.Still further aspect, reducing working frequency, then induction reactance and capacitive reactance all can accordingly reduce,
Filter effect can also decline, thus working frequency can not drop it is too low, should be in a suitable working range.By practice and it is comprehensive
Close after considering, switching frequency is set as 15kHz.
Reality in view of reducing loss and low pressure applications, fly-wheel diode VD selection Schottky diodes, Schottky two
Pole pipe has low-power consumption, high current, ultra-speed semiconductor device, and its reverse recovery time is extremely short (may diminish to several nanoseconds), just
To conduction voltage drop only 0.4V or so, and rectified current can reach several kiloamperes.These good characteristics are fast recovery diode institutes
Incomparable.Controller takes super low-power consumption DSP TMS320f28035.When power supply provides energy for load RL, by adopting
Sample circuit obtains the voltage x current value by loading RL, in the utility model embodiment, is connected using resistance R1 and resistance R2
The form of partial pressure is sampled, and wherein the voltage on resistance R2 is as sampled voltage, and transmits to controller.Specific implementation
When, resistance R1 resistance selection 20.3W ohms, resistance R2 resistance selection 10K ohms.
As shown in Fig. 2 the PWM drive circuit include be sequentially connected optical coupling isolation circuit, transistor amplifier circuit with
And grid emitter-base bandgap grading protection circuit, the push-pull configuration that transistor amplifier circuit is formed using NPN triode with PNP triode, grid emitter-base bandgap grading
Protection circuit uses Transient Suppression Diode.
In the utility model embodiment, the driving force of controller, optical coupling isolation circuit can be provided by PWM drive circuit
Model TLP250 chip can be selected, the push-pull configuration that transistor amplifier circuit is formed is specially that those skilled in the art institute is ripe
Know, here is omitted.
The controller is connected with the protection circuit for over-voltage over-current protection, and the protection circuit includes auxiliary reclay
And protection triode, protection triode use NPN triode, protect the base terminal of triode to be connected with controller, protection three
Pole pipe is grounded by protective resistance, the coil of auxiliary reclay with protecting the colelctor electrode of triode to be connected, auxiliary reclay it is normal
Contact is opened to connect with load.
In the utility model embodiment, protection circuit realizes the protection of overcurrent and overvoltage using auxiliary reclay.Make
For current source when, when electric current is more than 2A, auxiliary reclay trips immediately；When as voltage source, once output voltage surpasses
When crossing 13V, auxiliary reclay trips immediately.
The operation principle and characteristic of auxiliary reclay：When input quantity (such as voltage, electric current, temperature) reaches setting,
The electrical equipment for making controlled output circuit be turned on or off.Electrical quantity (such as electric current, voltage, frequency, power) relay can be divided into
Device and the major class of non electrical quantity (such as temperature, pressure, speed) relay two.With action is fast, working stability, service life are long, body
The advantages that product is small.It is widely used in the devices such as electric power protection, automation, motion, remote control, measurement and communication.
Auxiliary reclay is a kind of electronic control device, and it has control system (also known as input circuit) and by control system
(also known as output loop), is commonly used in automatic control circuit, and it is actually to be gone to control larger current with less electric current
One kind " automatic switch ".Therefore play automatically adjust in circuit, safeguard protection, the effect such as change-over circuit.
In the utility model embodiment, to realize above-mentioned function, by relay and the colelctor electrode phase of a NPN type triode
Even.The base stage of triode is connected with the I/O mouths of controller, using this port as control port.The emitter-base bandgap grading of triode is through one
200 Ω resistance eutral groundings, because its internal coil belongs to inductive load, a grounding resistance is added to ensure that relay can reliably break
Open.Under normal circumstances, I/O mouths output high level, triode conducting auxiliary reclay adhesive；When numbered when, I/O
Mouth output low level, triode shut-off, so that auxiliary reclay disconnects.
Key circuit and display circuit are also associated with the controller.In the utility model embodiment, pass through respectively
Key circuit and display circuit realize numeral setting and display.Key circuit is used for setting and adjusting output voltage；Output voltage,
The value of output current and input voltage is shown by display circuit.
Claims (5)
1. a kind of efficient direct current stabilized power source, it is characterized in that：Including direct voltage source E, the positive terminal of the direct voltage source E with
Wholly-controled device VT drain electrode end connection, wholly-controled device VT source terminal and fly-wheel diode VD cathode terminal and inductance L
One end connection, the inductance L other end is connected with electric capacity C one end, the electric capacity C other end and fly-wheel diode VD anode tap
And direct voltage source E negative pole end connection；
Also include being used for the sample circuit to output voltage current sampling, the sample circuit is connected with controller, and controller leads to
The gate terminal that PWM drive circuit is crossed with wholly-controled device VT is connected.
2. efficient direct current stabilized power source according to claim 1, it is characterized in that：The wholly-controled device VT uses MOSFET
Device, fly-wheel diode VD use Schottky diode.
3. efficient direct current stabilized power source according to claim 1, it is characterized in that：The PWM drive circuit includes connecting successively
Optical coupling isolation circuit, transistor amplifier circuit and the grid emitter-base bandgap grading protection circuit connect, transistor amplifier circuit use NPN triode
The push-pull configuration formed with PNP triode, grid emitter-base bandgap grading protection circuit use Transient Suppression Diode.
4. efficient direct current stabilized power source according to claim 1, it is characterized in that：The controller for over-voltage and over-current with protecting
The protection circuit connection of shield, the protection circuit include auxiliary reclay and protection triode, and protection triode uses NPN tri-
Pole pipe, the base terminal of triode is protected to be connected with controller, protection triode is grounded by protective resistance, the line of auxiliary reclay
Enclose with protecting the colelctor electrode of triode to be connected, normally opened contact and the load of auxiliary reclay connect.
5. efficient direct current stabilized power source according to claim 1, it is characterized in that：Button electricity is also associated with the controller
Road and display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720553263.4U CN206790347U (en) | 2017-05-18 | 2017-05-18 | Efficient direct current stabilized power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720553263.4U CN206790347U (en) | 2017-05-18 | 2017-05-18 | Efficient direct current stabilized power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790347U true CN206790347U (en) | 2017-12-22 |
Family
ID=60712398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720553263.4U Expired - Fee Related CN206790347U (en) | 2017-05-18 | 2017-05-18 | Efficient direct current stabilized power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021234680A1 (en) * | 2019-05-23 | 2021-11-25 | Wine Crush Market BC Ltd. dba Winecrush | System for integration into a fruit processing facility |
-
2017
- 2017-05-18 CN CN201720553263.4U patent/CN206790347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021234680A1 (en) * | 2019-05-23 | 2021-11-25 | Wine Crush Market BC Ltd. dba Winecrush | System for integration into a fruit processing facility |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120013271A1 (en) | Technology field | |
| US20140313626A1 (en) | Programmable high voltage energy saving system | |
| WO2018006769A1 (en) | Hysteresis power supply circuit | |
| CN103280765A (en) | Overvoltage protection circuit | |
| CN204361658U (en) | Undervoltage protection circuit | |
| CN205304222U (en) | Protective circuit of switching power supply | |
| CN207069897U (en) | Start-up circuit and inverse-excitation type switch power-supply | |
| CN104184111B (en) | Overvoltage protection circuit for high-voltage transmission line ground wire power getting | |
| CN106533144B (en) | Anti-reverse and current flowing backwards circuit | |
| CN207819757U (en) | A kind of start-up circuit | |
| CN206790347U (en) | Efficient direct current stabilized power source | |
| CN206293365U (en) | A kind of energy-saving resistance-capacitance depressurization relay drive circuit | |
| CN202093093U (en) | Three-phase low-power rate control intelligent electricity meter based on buck mode switch power supply | |
| CN201860094U (en) | Short circuit protection circuit for switch power | |
| CN213243514U (en) | Protection circuit and electronic equipment | |
| CN109327212A (en) | A kind of driving circuit of SiC MOSFET | |
| CN104779801A (en) | Multiplexed output low-power-consumption standby switching power supply | |
| CN208738824U (en) | The overvoltage crowbar of welding machine and its power input | |
| CN208158417U (en) | A kind of Switching Power Supply shutdown output discharge line | |
| CN206834987U (en) | A kind of control system of the flyback transformer based on Switching Power Supply | |
| CN207234697U (en) | A kind of wind turbine SS (soft start) control circuit | |
| CN101009470A (en) | A power circuit for the calculating device | |
| CN105846811A (en) | Hall switch control circuit | |
| CN101667728B (en) | Protection circuit for three-wire system current output transmitter | |
| CN106783401A (en) | A kind of energy-saving resistance-capacitance depressurization relay drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230118 Address after: 213100 East of Nanbei Street and North of Shichang Road, Zou District, Zhonglou District, Changzhou City, Jiangsu Province (6-102) Patentee after: Jiangsu Yongtuo Precision Gear Co.,Ltd. Address before: 213161 7th Floor, Block 1 #B, Chuangyan Port, Science and Education City, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU INSTITUTE OF TECHNOLOGY RESEARCH FOR SOLID STATE LIGHTING |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 |