CN104350671B - Switch conversion power source device - Google Patents
Switch conversion power source device Download PDFInfo
- Publication number
- CN104350671B CN104350671B CN201380030522.XA CN201380030522A CN104350671B CN 104350671 B CN104350671 B CN 104350671B CN 201380030522 A CN201380030522 A CN 201380030522A CN 104350671 B CN104350671 B CN 104350671B
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- Prior art keywords
- voltage
- circuit
- power source
- source device
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Electronic Switches (AREA)
Abstract
The present invention possesses：Step-down controller, is arranged on principal current line (41) and has inducer (L1), FET (11) and diode (D1)；Drive circuit (30), is driven to FET (11)；Drive voltage line (42), the driving voltage that polar driving device circuit (30) applies carry out applying transmission；Capacitor (C1), is connected between principal current line (41) and drive voltage line (42)；Constant voltage circuit (20), on the basis of the current potential of principal current line (41), carries out constant pressure and supplies to drive voltage line (42) to input voltage；With cathode-loaded diode (D2), External Control Voltage that will be high compared with the voltage after constant pressure is carried out from constant voltage circuit (20) is to drive voltage line (42) applying transmission.Thus, there is provided even if being the switch conversion and control of switch element that can also be reliably carried out between short-term when action starts during a kind of disconnection of input power so as to obtain the switch conversion power source device of desired output voltage.
Description
Technical field
The present invention relates to switch conversion power source device, more particularly to possesses boostrap circuit (bootstrap circuit)
Switch conversion power source device.
Background technology
All the time, in the switch conversion power source device of step-down controller etc., there is the device for possessing boostrap circuit.
In patent documentation 1, a kind of switch conversion power source device for possessing step-down controller is disclosed.Due to the switch unit of step-down controller
Part is on high-tension side switch element in circuit, therefore needs to generate the electricity with higher than earth level to control it
Control voltage on the basis of the side of position, and the boostrap circuit for having possessed diode and electric capacity is set for this.
In patent documentation 2, two and half connected on the two ends for alternately making DC source by control signal lead
Body switching elements ON/disconnection, so as to the electricity to the load supply electric power being connected on the midpoint of two switch conversion element of converter
Lu Zhong, in order to supply the power supply being driven for the on high-tension side switch conversion element of converter to being connected to DC source, and shows
Go out to have used the drive circuit of boostrap circuit.If low-side switch conversion element is connected, will be from accessory power supply via diode
And the capacitor of boostrap circuit is implemented to charge.
Citation
Patent documentation
Patent documentation 1：Japanese Unexamined Patent Publication 10-56776 publication
Patent documentation 2：Japanese Unexamined Patent Publication 2007-6207 publications
The content of the invention
Invention problem to be solved
However, in the circuit structure of patent documentation 1, such issues that have following, i.e. as input voltage is to bootstrapping electricity
The capacitor on road directly charges, therefore in the feelings of the pressure larger input voltage being transfused to more than fet driver circuit
Under condition, will be unable to using the step-down controller involved by patent documentation 1.Additionally, in the circuit of patent documentation 2, there is also as
Lower such issues that, i.e. by then pass through make low-pressure side switch conversion element of converter connect so as to boostrap circuit capacitor implement
Charge, therefore when the boostrap circuit is applied in the step-down controller of diode rectification, temporarily cease transducer is made
And have charge residue in the case of restarting which, i.e. so that the electric charge of the capacitor in outlet side or load etc. is not drained
In the case that state is activated, input voltage is not implemented to charge to the capacitor of boostrap circuit, so as to not as boostrap circuit
Function, thus cannot reliably driving switch element.
Therefore, even if it is an object of the present invention to provide between short-term during a kind of disconnection of input power, it is also possible to enter
The capacitor of row boostrap circuit charge and during can turning off after the switch of switch element of action when starting change
Control, so as to obtain the switch conversion power source device of desired output voltage.
Means for solving the problems
Switch conversion power source device involved in the present invention, it is characterised in that possess：Principal current line, which is to input terminal
It is attached with lead-out terminal；Step-down controller, which is arranged on the principal current line, and has inducer, switch element
With the 1st diode；Drive circuit, which is driven to the switch element；Drive voltage line, which applies to the drive circuit
Driving voltage；Capacitor, which is connected between the principal current line and the drive voltage line；Cathode-loaded diode
(bootstrap diode), the External Control Voltage being transfused to from outside is applied by which to the drive voltage line；And perseverance
Volt circuit, which makes from the input terminal input voltage being transfused to carry out constant pressure on the basis of the current potential of the principal current line
Change, and the voltage lower than the External Control Voltage is supplied to the drive voltage line.
In the structure shown here, made on the basis of principal current line due to the voltage by being charged in the capacitor of boostrap circuit
Driving voltage be supplied to drive circuit, therefore, it is possible to obtain the voltage needed for the control of switch element.Startup in the early stage
When etc., the current potential of drive voltage line is when being such as earthing potential, and the capacitor quilt of boostrap circuit is made by External Control Voltage
Charge.Now, as the voltage supplied by constant voltage circuit is less than External Control Voltage, therefore the capacitor of boostrap circuit is not permanent
Volt circuit charges.
Even if additionally, in operating stably, in the benchmark electricity of the capacitor that boostrap circuit is made by switching action
When position becomes earthing potential, the capacitor of boostrap circuit also will be electrically charged under External Control Voltage.Even if at this moment, also by
The voltage supplied in constant voltage circuit will not be charged by constant voltage circuit less than External Control Voltage, therefore capacitor.But, then
When principal current line becomes steady potential, as capacitor has been electrically charged under External Control Voltage, even if therefore at this moment
Also will not be charged by constant voltage circuit.Then, switch conversion power source device temporarily cease and lead-out terminal between voltage it is higher (smooth
Voltage is remained in capacitor) state in the case of, although capacitor that cannot be under External Control Voltage to boostrap circuit
Be charged, but due between input terminal voltage become to be above voltage between lead-out terminal (due to being step-down controller), therefore can
It is electrically charged the capacitor of boostrap circuit by the constant voltage circuit of current potential on the basis of principal current line.
So, it is limited to the outfan as switching situation about restarting in the short time after conversion power source device is temporarily ceased
The situation of the state that voltage is higher between son (voltage is remained in smoothing capacity device), by by the current potential on the basis of principal current line
Voltage after constant voltage circuit constant pressure and be electrically charged the capacitor of boostrap circuit, and apply driving voltage to drive circuit, from
And can restart.As in operating stably there is no action in constant voltage circuit, therefore constant pressure when not producing operating stably
Resistance loss under circuit, it is achieved thereby that high efficiency.
Preferably, the constant voltage circuit has：Transistor, colelctor electrode and base stage and the input terminal of the transistor connect
Connect, and emitter stage be connected with the drive voltage line；And Zener diode, the anode of the Zener diode and the principal current line
Connection, and negative electrode be connected with the base stage of the transistor.
In the structure shown here, circuitry component count is less, and stabilized constant pressure can be supplied to drive voltage line
Give.
Preferably, the switch conversion power source device possesses：2nd diode, which is arranged at the input terminal and institute
State between constant voltage circuit, and prevent the reverse current from the constant voltage circuit.
In the structure shown here, the applying of reverse biased is prevented from, breakage of other elements etc. is prevented from.
Preferably, the switch conversion power source device possesses：4th diode, its be arranged at the drive voltage line and
Between the constant voltage circuit, and prevent the applying of reverse biased from the constant voltage circuit.
In the structure shown here, the applying of reverse biased is prevented from, breakage of other elements etc. is prevented from.
Preferably, the step-down controller is connected with LED in outlet side.
In the structure shown here, even if making LED on-offs in short time, it is also possible to effectively light LED.
Invention effect
According to the present invention, though switch conversion power source device temporarily cease after short-term between when restarting, it is also possible to
The capacitor of boostrap circuit is charged as into given driving voltage.Thus, it is possible to the action in switch conversion power source device starts
When switch conversion and control is carried out to the switch element of step-down controller reliably, be obtained in that desired output.
Description of the drawings
Fig. 1 is the circuit diagram of the switch conversion power source device involved by embodiment 1.
Fig. 2 is the circuit diagram of the switch conversion power source device involved by embodiment 2.
Specific embodiment
(embodiment 1)
Fig. 1 illustrates the circuit diagram of the switch conversion power source device involved by embodiment 1.Opening involved by present embodiment
Closing conversion power source device 101 is carried out to the input voltage Vi being transfused to from input terminal Pi (+), Pi (-) by step-down controller
Blood pressure lowering, and output voltage Vo is exported from lead-out terminal Po (+), Po (-).Direct current is connected with input terminal Pi (+), Pi (-)
Voltage source E.On lead-out terminal Po (+), Po (-) being connected with LED etc. carries out the load of constant-current driving.In the following description,
The circuit of connection input terminal Pi (+) and lead-out terminal Po (+) is referred to as principal current line 41.
The step-down controller of switch conversion power source device 101 possesses N-shaped MOS-FET (hereinafter referred to as FET) 11, inducer
L1 and diode D1.Switch elements of the FET11 equivalent to the present invention, 1st diodes of the diode D1 equivalent to the present invention.
FET11 and inducer L1 are connected in series, and are arranged on principal current line 41.More specifically, the leakage of FET11
Pole is connected with input terminal Pi (+), and source electrode is connected with lead-out terminal Po (+) via inducer L1.The negative electrode of diode D1 with
The junction point connection of FET11 and inducer L1, anode are connected with the ground wire for linking input terminal Pi (-) and lead-out terminal Po (-).
Switch conversion power source device 101 possesses drive circuit 30, level shift circuit 31 and control circuit 32.Drive
Drive circuit of the device circuit 30 equivalent to the present invention.
Control circuit 32 for example detected to output current via resistance (not shown) being arranged on ground wire etc.,
Export for the drive signal for switching conversion and control is carried out to FET11 to obtain given output current to level shift circuit 31
Io.Control circuit 32 is operated using the External Control Voltage Vcc being transfused to by external power cord 43.In addition,
The capacitor C2 as decoupling capacitor or smoothing capacity is connected with external power cord 43.
Level shift circuit 31 implements from control circuit 32 level shift of the drive signal being output, and to driver electricity
Road 30 exports.
Drive circuit 30 is according to being carried out to FET11 by the drive signal of level shift by level shift circuit 31
Switch conversion and control.Now, drive circuit 30 improves the voltage level of drive signal by boostrap circuit 10, and to
The grid of FET11 applies.Driving voltage is supplied to drive circuit 30 from boostrap circuit 10 by drive voltage line 42.
Boostrap circuit 10 has capacitor C1 and cathode-loaded diode D2.Capacitor C1 is connected drive voltage line 42
And principal current line 41 between.The negative electrode of cathode-loaded diode D2 is connected with drive voltage line 42, anode and external power cord 43
Connection.
Additionally, switch conversion power source device 101 possesses constant voltage circuit 20, the constant voltage circuit 20 is with the current potential of principal current line 41
On the basis of, input voltage Vi constant pressures are turned to into constant pressure Vb and is supplied to drive voltage line 42.Constant voltage circuit 20 has resistance
R1, transistor 12 and Zener diode Dz.The base stage of transistor 12 is connected with input terminal Pi (+) via resistance R1, collection
Electrode is connected with input terminal Pi (+), and emitter stage is connected with drive voltage line 42.The Zener voltage and constant pressure of Zener diode Dz
Vb is roughly equal, and anode is connected with principal current line 41, and negative electrode is connected with the base stage of transistor 12.
In the present embodiment, External Control Voltage Vcc is set to the Zener diode Dz's higher than constant voltage circuit 20
Zener voltage (constant pressure Vb).Hereinafter, include specific numerical value and illustrate come the action to switching conversion power source device 101.
Input voltage Vi is set to 80V, output voltage Vo and is set to 50V, External Control Voltage Vcc and is set to 15V, constant pressure Vb be set to 12V.
When the operating stably of conversion power source device 101 is switched, the switch conversion and control due to implementing FET11, therefore
Become the current potential of the negative electrode of the diode D1 that capacitor C1 is carried out on the reference potential of charging, principal current line 41, because of FET11
On-off and change.For example, when FET11 is connected, the current potential of the negative electrode of diode D1 becomes Vin (80V), when
When FET11 disconnects, the current potential of the negative electrode of diode D1 essentially becomes earthing potential.
Therefore, when FET11 disconnects, from external power cord 43 with by the path A of cathode-loaded diode D2 to electric capacity
Device C1 implements the charging of the External Control Voltage Vcc of 15V.Constant pressure Vb of the 12V not produced by constant voltage circuit 20 by capacitor C1
Charge.Thus, when the operating stably of conversion power source device 101 is switched, implementing voltage from external power cord 43 to capacitor C1
Charging, and the charging voltage is supplied to drive circuit 30 as driving voltage.Thus, for drive circuit 30
Driving voltage is supplied to, so as to drive circuit 30 can be to applying driving voltage between the grid of FET11 and source electrode, and then can
Switch conversion and control is carried out to FET11 reliably.
Additionally, in the case of sufficiently long during the action stopping and disconnection of switch conversion power source device 101, due to electric capacity
The electric charge of device Co is discharged and does not remain so as to the electric charge of capacitor Co, therefore the cathode potential of diode D1 essentially becomes ground connection
Current potential, from external power cord 43 being carried out the external control of 15V by the path A of cathode-loaded diode D2 to capacitor C1
The charging of voltage vcc.
On the other hand, when switch conversion power source device 101 action stops and disconnection between short-term during in restart
In the case of, the electric charge of capacitor Co is not drained and is remained electric charge in capacitor Co sometimes.Particularly, have in load
In the case of the diode characteristic of LED etc., due to not having electric current flowing if the voltage of the value for fixing the above is not applied, because
This capacitor Co is difficult electric discharge.Thus, if the current potential of principal current line 41 is set to 13V for example, external power cord 43 will become
The current potential roughly the same with principal current line 41 and drive voltage line 42.In this case, cathode-loaded diode D2 is until electricity
Become non-conduction in a period of till the residual charge elimination of container Co, so as to capacitor C1 is not filled by External Control Voltage Vcc
Electricity.
But, the higher situation of the current potential of so even principal current line 41, during the disconnection of FET11, transistor 12
Also principal current line 41 is entered to take action under the high potential corresponding with Zener voltage (12V of constant pressure Vb) as reference potential
Make.Thus, 12 action of transistor of constant voltage circuit 20, so as to the 12V after the constant pressure of the input voltage Vi of 80V constant pressure Vb from
Transistor 12 implements the charging of constant pressure Vb of 12V with by the path B of capacitor C1 to capacitor C1.
Even as described above, being opened after during 101 action of switch conversion power source device stopping and the disconnection between short-term again
Dynamic situation, it is also possible to which voltage charging is carried out to the capacitor C1 of boostrap circuit 10 by constant voltage circuit 20.Thus, driver
Circuit 30 stably can carry out switch conversion and control to FET11.
Additionally, assuming to employ with constant pressure Vb after carrying out constant pressure by constant voltage circuit 20 to carry out often capacitor C1
When the structure that charges in the case of, resistance loss will be produced in constant voltage circuit 20.But, in the present embodiment, due to
During operating stably, according to high External Control Voltage Vcc compared with the voltage after constant pressure is carried out by constant voltage circuit 20 come to electricity
Container C1 is charged, therefore constant voltage circuit 20 is failure to actuate such that it is able to reduce above-mentioned resistance loss.
(embodiment 2)
Fig. 2 illustrates the circuit diagram of the switch conversion power source device involved by embodiment 2.Opening involved by present embodiment
The basic circuit structure for closing conversion power source device 102 is identical with embodiment 1.Hereinafter, to carrying out with 1 difference of embodiment
Explanation.
Input terminal Pi (+) and asking for constant voltage circuit 20 are provided with diode (the 2nd diode of the present invention) D3 and electricity
Resistance R2.The anode of diode D3 is connected with input terminal Pi (+), base of the negative electrode via resistance R2 and resistance R1 with transistor 12
Pole connects.Additionally, the colelctor electrode of transistor 12 is connected with resistance R2 via resistance R3.In the cathode load two of boostrap circuit 10
Resistance R4 is connected in series with pole pipe D2.Additionally, the asking for emitter stage and drive voltage line 42 in transistor 12 is provided with two poles
Pipe (the 3rd diode of the present invention) D4.
The purpose of above-mentioned diode D3 is to prevent reverse biased to be applied in constant voltage circuit 20.For example in input
In the case that voltage Vi drastically declines, although input terminal Pi (+) and diode are made by the effect of the body diode of FET11
The negative electrode of D1 becomes same potential, but when electric charge is remained in capacitor C1, reverse biased is applied in constant voltage circuit.But
It is, by arranging diode D3 such that it is able to prevent between the base stage and emitter stage of transistor 12 quilt because of reverse bias voltage
The situation of destruction.Additionally, resistance R2, R3, R4 are the element for preventing overcurrent, the destruction of each element is prevented from.
Diode D4 prevents reverse biased to be applied in constant voltage circuit 20.As described in embodiment 1, due to
External Control Voltage Vcc is set to the Zener voltage (constant pressure Vb) of the Zener diode Dz higher than constant voltage circuit 20, therefore instead
It is applied between the base stage and emitter stage of transistor 12 to bias.But, by arranging diode D4 such that it is able to prevent crystalline substance
The situation destroyed because of reverse bias voltage between the base stage and emitter stage of body pipe 12.
More than, switching concrete structure of conversion power source device etc. can carry out appropriately designed change, above-mentioned embodiment
In described effect and effect only list the optimal effect and effect produced according to the present invention, by
The effect and effect that the present invention is produced is not limited to the content described in above-mentioned embodiment.
Symbol description
10- boostrap circuits
11-FET (switch element)
12- transistors
20- constant voltage circuits
30- drive circuits
31- level shift circuits
32- control circuits
41- principal current lines
42- drive voltage lines
43- external power cords
101st, 102- switches conversion power source device
C1- capacitors
D1- diodes (the 1st diode)
D2- cathode-loaded diodes
D3- diodes (the 2nd diode)
D4- diodes (the 3rd diode)
Dz- Zener diodes
L1- inducers
Claims (5)
1. a kind of switch conversion power source device, possesses：
Principal current line, which is to making the input terminal of input voltage input and being attached the lead-out terminal of output voltage output；
Step-down controller, which is arranged on the principal current line, and has inducer, switch element and the 1st diode；
Drive circuit, which is driven to the switch element；
Drive voltage line, which applies driving voltage to the drive circuit；
Capacitor, which is connected between the principal current line and the drive voltage line；
Cathode-loaded diode, the External Control Voltage being transfused to from outside is applied by which to the drive voltage line；With
Constant voltage circuit, which makes the input voltage carry out constant pressure on the basis of the current potential of the principal current line, and will be than described
The low voltage of External Control Voltage is supplied to the drive voltage line.
2. switch conversion power source device according to claim 1, wherein,
The constant voltage circuit has：
Transistor, the colelctor electrode and base stage of the transistor be connected with the input terminal, and emitter stage and the drive voltage line
Connection；With
Zener diode, the anode of the Zener diode is connected with the principal current line, and negative electrode and the transistor base stage
Connection.
3. switch conversion power source device according to claim 1 and 2, wherein,
The switch conversion power source device possesses：2nd diode, its be arranged at the input terminal and the constant voltage circuit it
Between, and prevent reverse biased to be applied in the constant voltage circuit.
4. switch conversion power source device according to claim 1 and 2, wherein,
The switch conversion power source device possesses：3rd diode, which is arranged at the drive voltage line and the constant voltage circuit
Between, and prevent reverse biased to be applied in the constant voltage circuit.
5. switch conversion power source device according to claim 1 and 2, wherein,
The step-down controller is connected with LED in outlet side.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-131461 | 2012-06-11 | ||
| JP2012131461 | 2012-06-11 | ||
| PCT/JP2013/065319 WO2013187269A1 (en) | 2012-06-11 | 2013-06-03 | Switching power source device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104350671A CN104350671A (en) | 2015-02-11 |
| CN104350671B true CN104350671B (en) | 2017-03-29 |
Family
ID=49758095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380030522.XA Expired - Fee Related CN104350671B (en) | 2012-06-11 | 2013-06-03 | Switch conversion power source device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5825433B2 (en) |
| CN (1) | CN104350671B (en) |
| WO (1) | WO2013187269A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6237301B2 (en) * | 2014-02-10 | 2017-11-29 | 三菱電機株式会社 | Lighting device and lighting apparatus |
| JP2015154682A (en) * | 2014-02-19 | 2015-08-24 | サンケン電気株式会社 | Dc/dc converter |
| JP6692069B2 (en) * | 2016-04-27 | 2020-05-13 | パナソニックＩｐマネジメント株式会社 | Power supply and lighting device |
| JP6514175B2 (en) * | 2016-10-11 | 2019-05-15 | コーセル株式会社 | Switching power supply |
| US10778080B1 (en) * | 2019-06-06 | 2020-09-15 | Microchip Technology Incorporated | Self-biased non-isolated low-power switching regulator |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2802563B2 (en) * | 1992-02-25 | 1998-09-24 | 株式会社ユタカ電機製作所 | DC-DC converter |
| JP3444468B2 (en) * | 1997-01-29 | 2003-09-08 | 株式会社村田製作所 | DC-DC converter |
| JP2002025790A (en) * | 2000-07-12 | 2002-01-25 | Koito Mfg Co Ltd | Discharge lamp lighting circuit |
| JP4497991B2 (en) * | 2004-04-14 | 2010-07-07 | 株式会社ルネサステクノロジ | Power supply driver circuit and switching power supply device |
| JP3750690B1 (en) * | 2005-02-15 | 2006-03-01 | 株式会社村田製作所 | Power supply |
| JP2009095214A (en) * | 2007-10-12 | 2009-04-30 | Sony Corp | Dc-dc converter circuit |
| JP5301969B2 (en) * | 2008-12-04 | 2013-09-25 | シャープ株式会社 | Switching power supply circuit and electronic device using the same |
| WO2010131496A1 (en) * | 2009-05-15 | 2010-11-18 | 株式会社村田製作所 | Pfc converter |
-
2013
- 2013-06-03 JP JP2014521267A patent/JP5825433B2/en not_active Expired - Fee Related
- 2013-06-03 CN CN201380030522.XA patent/CN104350671B/en not_active Expired - Fee Related
- 2013-06-03 WO PCT/JP2013/065319 patent/WO2013187269A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2013187269A1 (en) | 2016-02-04 |
| CN104350671A (en) | 2015-02-11 |
| WO2013187269A1 (en) | 2013-12-19 |
| JP5825433B2 (en) | 2015-12-02 |
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