CN207573225U - Switch converters switching node power-supply circuit - Google Patents
Switch converters switching node power-supply circuit Download PDFInfo
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- CN207573225U CN207573225U CN201721708377.8U CN201721708377U CN207573225U CN 207573225 U CN207573225 U CN 207573225U CN 201721708377 U CN201721708377 U CN 201721708377U CN 207573225 U CN207573225 U CN 207573225U
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Abstract
The utility model provides switch converters switching node power-supply circuit, includes the positive port of input voltage, input voltage negative terminal mouth, the positive port of output voltage, publicly output voltage negative terminal mouth, port, single-way switch module, capacitance partial pressure module and leadage circuit module；Input voltage negative terminal mouth is connected with output voltage negative terminal mouth, as publicly port；The positive port of input voltage is connected at switch converters switching node SW, and is passed through single-way switch module and be connected with capacitance partial pressure module；The another of capacitance partial pressure module is connected to common mouth, and the output terminal of capacitance partial pressure module is connected with one end of leadage circuit module, as the positive port of output voltage；The other end of leadage circuit module is connected with the tie point of single-way switch module and capacitance partial pressure module.The utility model can be adapted in more high input voltage, more efficient Switching Converter Topologies, simplify circuit structure, reduce the design difficulty of switch converters accessory power supply and manufacture cost.
Description
Technical field
The utility model is related to a kind of switch converters switching node power-supply circuit, more particularly to one kind passes through switch change-over
Device switching node carries out taking electricity and the circuit of accessory power supply is provided for switch converters.
Background technology
Switch converters be modern transformation of electrical energy technology core component and all kinds of Switching Power Supplies, frequency converter,
The basic component units of the systems such as UPS, photovoltaic generation, wind power generation, LED illumination, are widely used in electric power, communication, household electrical appliances, iron
The fields such as road traffic, automotive electronics, Industry Control, instrument and meter, Aeronautics and Astronautics, navigation.
Switch converters are combined with certain control technology can form a complete system.At present, control technology
Significant progress is achieved, control chip (hereinafter referred to as controller) type is very abundant, and with the hair of semiconductor technology
Exhibition, digital control technology already become a kind of new trend.For the system that switch converters are formed, controller
Power supply seems particularly important, and a reliable and stable controller electric power system (hereinafter referred to as accessory power supply) will be determined directly entirely
The reliability of system.Generally directed to different switch converters and controller, engineer is required for well-designed accessory power supply, this
Undoubtedly increase the complexity and cost of system.Common way is coupled on the main power transformer of switch converters
One winding generates voltage needed for controller, for high-power system is often an individually designed small-sized Switching Power Supply
System is as accessory power supply.Such as flyback converter, accessory power supply be typically using increase on the transformer additional one around
Group and the method for rectification circuit, to generate voltage needed for controller, this is resulted in, and system design is more complicated, and cost also can be corresponding
Ground increases.
Chinese patent (number of patent application 201711180756.9) proposes a kind of accessory power supply (such as Fig. 1 of flyback converter
It is shown), pass through (the referred to herein as flyback converter switching node between the drain electrode of switching tube and primary side reference ground.Switch change-over
The switching node of device refers to the tie point between switch converters switching tube and energy-storage travelling wave tube, can there are an arteries and veins at switching node
Dynamic DC voltage, hereinafter referred to as switching node, are denoted as SW.) electricity is taken to power for the controller of flyback converter, advantage
For：1st, by switching node, device is powered in order to control, reduces by a transformer winding；2nd, it is realized using linear voltage-stabilizing circuit and stablizes electricity
Pressure exports, and device provides burning voltage in order to control；3rd, there is certain absorption to leakage inductance spike.But circuit described in this patent
Application range is very narrow, is only applicable to the flyback converter of low input, and such as power rows, 4.5VDC~9VDC inputs are electric in the industry
Product in the range of pressure for the flyback converter of more high input voltage, takes electrical efficiency that will substantially reduce.
Hereinafter, by an example come illustrate foregoing circuit there are the problem of.
Certain reverse exciting switching voltage regulator, input Vin (4.5VDC~9VDC), output Vo (12VDC), output power Po (10W), becomes
Depressor original secondary turn ratio n (6：12).The platform voltage of flyback converter switching node meets：
VSW=Vin+nVo(10.5V≤Vds≤15V)
By Fig. 1 circuits, electricity is taken at switching node, the voltage of acquisition is Vsw, by a linear voltage-stabilizing circuit,
Can obtain a 10V or so metastable voltage in order to control device power because the input voltage of linear voltage-stabilizing circuit with it is defeated
The difference gone out between voltage is little, so final takes the opposite still acceptable of electrical efficiency.But work as reverse exciting switching voltage regulator
Input voltage it is higher, Vsw can be very high, obtains the power supply needed for a relatively low controller by linear voltage-stabilizing circuit at this time
Voltage, take electrical efficiency will it is very low under, for example the power-supply system of 48V, input voltage reach as high as 75V, and Vsw is in 100V at this time
Left and right takes electricity by linear voltage-stabilizing circuit, obtains the voltage of a 10V, and it is only 10% to take electrical efficiency, this be it is unacceptable,
It takes electrical efficiency than taking the efficiency of electricity also low by linear voltage-stabilizing circuit directly from input voltage vin.
Have appreciated that it is desirable to provide, one kind can be adapted for more high input voltage, more efficient switch converters are opened
Artis power-supply circuit.
Utility model content
In view of this, more high input voltage can be suitable for the technical problem to be solved by the present invention is to provide a kind of
Efficient switch converter switches node power-supply circuit.By the pulsating dc voltage at switch converters switching node, by capacitance
After bleeder circuit partial pressure, as the accessory power supply of switch converters, the design difficulty and system of switch converters accessory power supply are reduced
Cause this.
The utility model solves above-mentioned technical problem and is achieved through the following technical solutions：
Switch converters switching node power-supply circuit, it is characterised in that：Include the positive port of input voltage, input voltage negative terminal
Mouth, the positive port of output voltage, publicly output voltage negative terminal mouth, port, single-way switch module, capacitance partial pressure module and vent discharge
Road module；Input voltage negative terminal mouth is connected with output voltage negative terminal mouth, as publicly port；The positive port of input voltage is connected to out
It closes at converter switches node SW, and passes through single-way switch module and be connected with the input terminal of capacitance partial pressure module；Capacitance partial pressure mould
The another of block is connected to common mouth, and the output terminal of capacitance partial pressure module is connected with one end of leadage circuit module, as defeated
Go out positive voltage terminal mouth；The other end of leadage circuit module is connected with the tie point of single-way switch module and capacitance partial pressure module.
Preferably, single-way switch module is made of diode D1；The anode of diode D1 is drawn, and is connected to switch converters and is opened
At artis SW, the positive port of input voltage as power-supply circuit；The cathode of diode D1 and the input terminal of capacitance partial pressure module
It is connected.
Preferably, capacitance partial pressure module is made of upper derided capacitors C1 and lower derided capacitors C2；The one of upper derided capacitors C1
The output terminal of end connection single-way switch module, the other end of upper derided capacitors C1 are connected with lower derided capacitors C2, lower derided capacitors
The another of C2 is connected to common mouth, and the junction extraction of upper derided capacitors C1 and lower derided capacitors C2 are as power-supply circuit
The positive port of output voltage.
Preferably, leadage circuit is an active electric network or passive network.
Preferably, leadage circuit module is made of resistance R1；One end of resistance R1 connects with the input terminal of capacitance partial pressure module
It connects, the other end of resistance R1 is connected with the positive port of output voltage.
As the improvement of said program, leadage circuit module is made of voltage-stabiliser tube Z1 and resistance R1；The anode of voltage-stabiliser tube Z1
It is connect with the output terminal of capacitance partial pressure module, the positive port of the output voltage as power-supply circuit, the cathode and resistance of voltage-stabiliser tube Z1
One end of R1 is connected, and the other end of resistance R1 is connect with the input terminal of capacitance partial pressure module.
Preferably, the location swap of resistance R1 and voltage-stabiliser tube Z1, i.e.,：One end of resistance R1 and the output of capacitance partial pressure module
End connection, the positive port of output voltage as power-supply circuit, the other end of resistance R1 are connected with the anode of voltage-stabiliser tube Z1, voltage-stabiliser tube
The cathode of Z1 is connected with the input terminal of capacitance partial pressure module.
As the improvement of said program, leadage circuit is made of triode Q1, resistance R1 and resistance R2, the collection of triode Q1
Electrode is connected with one end of resistance R1, and the other end of resistance R1 is connect with the output terminal of capacitance partial pressure module, as power-supply circuit
The positive port of output voltage, the emitter of triode Q1 is connected with the input terminal of capacitance partial pressure module, and the base stage of triode Q1 is led to
Resistance R2 is crossed to be connected at switch converters switching node SW.
Preferably, triode Q1 is PNP type triode.
The utility model switch converters switching node takes the method for electricity and having the beneficial effect that for circuit：
(1) a kind of switch converters switching node power-supply circuit is provided, the design for reducing switch converters accessory power supply is difficult
Degree and manufacture cost；
(2) it solves the problem of that existing scheme takes poor electrical efficiency when node voltage is higher, provides a kind of high efficiency
And the accessory power supply solution of the Switching Power Supply suitable for more high input voltage.
(3) circuit structure is simple, and the occasion of accessory power supply power supply is needed suitable for all switch converters.
Description of the drawings
Fig. 1 is the auxiliary power supply circuit application circuit schematic diagram of existing flyback converter；
Fig. 2 is the circuit block diagram of the utility model switch converters switching node power-supply circuit；
Fig. 3 is the circuit diagram of the utility model switch converters switching node power-supply circuit first embodiment；
Fig. 4 is the circuit diagram that the utility model first embodiment is applied to reverse exciting switching voltage regulator；
Fig. 5 is the key node oscillogram that the utility model first embodiment is applied to reverse exciting switching voltage regulator；
Fig. 6 is the circuit diagram of the utility model switch converters switching node power-supply circuit second embodiment；
Fig. 7 is the circuit diagram of the utility model switch converters switching node power-supply circuit 3rd embodiment.
Specific embodiment
The inventive concept of the utility model is by the pulsating dc voltage of switch converters switching node, by capacitance partial pressure
After module partial pressure, as the accessory power supply of switch converters, while increase single-way switch module before capacitance partial pressure module so that
The capacitance partial pressure module of addition will not the opening process of switch tube produce bigger effect.
With reference to the accompanying drawings and embodiments, the utility model is illustrated.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
Fig. 2 is the circuit block diagram of the utility model switch converters switching node power-supply circuit, described in the utility model to take
The positive port of input voltage of circuit 201 is connected at switch converters switching node SW, and the positive port of output voltage is electric as taking
The outside output voltage of output terminal on road 201, input voltage negative terminal mouth, the output voltage negative terminal mouth of power-supply circuit 201 are connected to public
Ground port.
Specifically, power-supply circuit 201 includes diode D1, lower derided capacitors C2, upper derided capacitors C1 and is connected across
The leadage circuit at derided capacitors C1 both ends.The anode of diode D1 is connected at switch converters switching node SW, diode D1's
Cathode is connected with one end of upper derided capacitors C1, one end of leadage circuit, the other end of upper derided capacitors C1, lower derided capacitors C2
One end be connected with the other end of leadage circuit, and draw as the positive port of the output voltage of power-supply circuit 201, lower derided capacitors
The another of C2 is terminated at common mouth.
The type of switch converters is more, is not easy to illustrate one by one herein, for the ease of explaining circuit theory
It releases, only for flyback converter, enumerates specific embodiment and illustrate, correlation engineering technical staff can show that this practicality is new accordingly
Type is applied to the design main points of switch converters.
First embodiment
Fig. 3 is the circuit diagram of the utility model switch converters switching node power-supply circuit first embodiment, including
Diode D1, lower derided capacitors C2, upper derided capacitors C1 and bleeder resistance R1.
The connection relation of the first embodiment of the utility model switch converters switching node power-supply circuit is as follows：
The anode of diode D1 is connected at switch converters switching node SW, and the input voltage as power-supply circuit 301 is just
Port；The cathode of diode D1 is connected with one end of upper derided capacitors C1, one end of bleeder resistance R1, upper derided capacitors C1's
The other end, bleeder resistance R1 the other end be connected with one end of the C2 of lower derided capacitors, and as power-supply circuit 301 output electricity
Positive pressure port；The other end of lower derided capacitors C2, the input voltage negative terminal mouth of power-supply circuit 301 and output voltage negative terminal mouth phase
Even, as publicly port.
Wherein, switch converters switching node SW refers to the tie point between switch converters switching tube and energy-storage travelling wave tube,
There are a pulsating dc voltage at switching node, this pulsating dc voltage is in periodically, in a period of time in a cycle
It is in low-pressure state (hereinafter referred to as high level) in remaining time in high pressure conditions (hereinafter referred to as high level).
The operation principle of the present embodiment：
In a cycle of pulsating dc voltage, when switch converters switching node SW is high level, diode D1 is led
Logical, upper derided capacitors C1, lower derided capacitors C2 charging, during switch converters switching node SW low levels, diode D1 is not turned on,
Lower derided capacitors C2 is used for power supply outward, and resistance R1 is used for discharging to capacitance C1.In a cycle, the two of upper derided capacitors C1
The practical very little of average voltage at end, the electric energy of bleeder resistance R1 losses is relatively fewer, and power-supply circuit 301 is made to have higher effect
Rate.
Wherein, upper derided capacitors C1 and lower derided capacitors C2 can be that multiple capacitances are composed in series.
Fig. 4 is the circuit diagram that the utility model first embodiment is applied to reverse exciting switching voltage regulator.As shown in the figure, take electricity
The positive port of input voltage of circuit 401 is connected at the switching node SW of reverse exciting switching voltage regulator (drain electrode of switch transistor T R1 and transformation
The node that device T is connected), the input voltage negative terminal mouth of power-supply circuit 401 is connected with the source electrode of switch transistor T R1, is connected to common
Mouthful.Inductance Lr, inductance Lm form the equivalent model of transformer with ideal transformer T, and inductance Lr is equivalent to the leakage inductance of transformer T,
Inductance Lm is equivalent to primary side magnetizing inductance, and transformer T is ideal transformer.
Reverse exciting switching voltage regulator, which generally requires, considers two processes：First, the firm powered on moment of reverse exciting switching voltage regulator, the electricity of controller
Source is established, until flyback switches electric power output voltage is established, is called start-up course；2nd, after controller power source is established, start
There is switch control signal generation, reverse exciting switching voltage regulator output is established, and is called course of normal operation.
The utility model first embodiment is as follows applied to the course of work and principle of reverse exciting switching voltage regulator：
Start-up course：After power supply is connected, input power anode is added to by inductance Lr and inductance Lm by Vin and takes electricity electricity
Series resonance occurs for the positive port of input voltage on road 401, inductance Lr, inductance Lm, upper derided capacitors C1 and lower derided capacitors C2, on
Derided capacitors C1 and lower derided capacitors C2 are electrically charged, until the voltage of lower derided capacitors C2 reaches the startup threshold value of controller, i.e.,
The output voltage that power-supply circuit 401 generates reaches the startup threshold value of controller, and controller is started to work, output switch control letter
Number, control switch transistor T R is switched on or off, until flyback switches electric power output voltage is established, start-up course terminates.
Steady operation process：Controller output switch control signal, control switch transistor T R are switched on or off, while according to defeated
The turn-on time of the feedback quantity adjustment switch transistor T R of outlet, achievees the purpose that maintain output voltage stabilization.At this point, flyback switch electricity
A pulsating dc voltage will be generated at the switching node SW in source, power-supply circuit 401 is in the pulsating dc voltage of switching node SW
During for high level, diode D1 conductings are charged to upper derided capacitors C1 and lower partial pressure C2, until the arteries and veins of switching node SW
Dynamic DC voltage becomes the low level moment, and upper derided capacitors C1 and lower derided capacitors C2 will distribute electricity according to a certain percentage at this time
It presses (intrinsic standoff ratio is related with the capacitance of capacitance)；Power-supply circuit 401 is when the pulsating dc voltage of switching node SW is low level, two
Pole pipe D1 is turned off, and the outside output energy of power-supply circuit 401 is provided by lower derided capacitors C2, and load (controller) can consume down
Energy in derided capacitors C2, at the same time, bleeder resistance R1 can discharge the energy in derided capacitors C1；Later, circuit is opened
Beginning next cycle restarts to be charged and discharged to capacitance C1 and C2.
Fig. 5 is the key node oscillogram that the utility model first embodiment is applied to reverse exciting switching voltage regulator, from oscillogram
In can more intuitively see the charge and discharge process of upper derided capacitors C1 and lower derided capacitors C2.
It should be pointed out that in practical application, the value of upper derided capacitors C1 is meeting 401 output voltage requirement of power-supply circuit
In the case of should choose capacitance as small as possible, the voltage waveform of derided capacitors C1 upper in this way will similar one " triangular wave ", can be with
So that the average voltage smallers of upper derided capacitors C1 in one cycle, so as to which power-supply circuit be made to have higher efficiency.
Second embodiment
Fig. 6 is the circuit diagram of the utility model second embodiment, compared with first embodiment Fig. 3, the difference lies in：It takes
Circuit 601 improves leadage circuit, other are identical with the first embodiment, and are not repeated.Wherein leadage circuit includes vent discharge
Hinder R1 and voltage-stabiliser tube Z1.
The connection relation of the second embodiment of the utility model switch converters switching node power-supply circuit is as follows：
The anode of diode D1 is connected at switch converters switching node SW, and the input voltage as power-supply circuit 601 is just
Port；The cathode of diode D1 is connected with one end of upper derided capacitors C1, one end of resistance R1, the other end and voltage-stabiliser tube of R1
The cathode of Z1 is connected, the anode of voltage-stabiliser tube Z1, upper derided capacitors C1 the other end be connected with one end of the C2 of lower derided capacitors, and
The positive port of output voltage as power-supply circuit 601；The other end, input voltage negative terminal mouth and the output voltage of lower derided capacitors C2
Negative terminal mouth is connected, the publicly port as power-supply circuit 601.
Wherein, by the voltage stabilizing value Uz of Rational choice voltage-stabiliser tube Z1, the control to single-way switch module turning-on voltage is realized,
So as to fulfill the configuration to single-way switch module.
It should be noted that resistance R1 and the position of voltage-stabiliser tube Z1 can be interchanged, i.e.,：One end of resistance R1 and upper partial pressure electricity
Hold the node connection that C1 is connected with lower derided capacitors C2, the positive port of output voltage as power-supply circuit, the other end of resistance R1
It is connected with the anode of voltage-stabiliser tube Z1, the cathode of voltage-stabiliser tube Z1 is connected with the other end of upper derided capacitors C1.
3rd embodiment
Fig. 7 is the circuit diagram of the utility model 3rd embodiment, and compared with first embodiment Fig. 3, difference exists
In：The active electric network controlled using one is no difference, is not repeated as leadage circuit module, other circuit parts.Wherein
Leadage circuit includes resistance R1, triode Q1 and resistance R2.
The connection relation of the 3rd embodiment of the utility model switch converters switching node power-supply circuit is as follows：
The anode of diode D1 is connected at switch converters switching node SW, and the input voltage as power-supply circuit 701 is just
Port；The cathode of diode D1 is connected with one end of upper derided capacitors C1, the emitter of triode Q1, the collector of triode Q1
It is connected, and as power-supply circuit 701 with one end of the other end of upper derided capacitors C1, the C2 of lower derided capacitors by resistance R1
The positive port of output voltage；The other end of lower derided capacitors C2 is connected with input voltage negative terminal mouth and output voltage negative terminal mouth, as
The publicly port of power-supply circuit 701；The base stage of triode Q1 is connected to by resistance R1 at switch converters switching node SW, is opened
It closes converter switches node SW and provides control signal for leadage circuit.
Wherein, triode Q1 is PNP type triode.
The benefit of the present embodiment is：When the pulsating dc voltage of switch converters switching node SW is high level, three poles
Pipe Q1 is not turned on, and upper derided capacitors C1 and lower derided capacitors C2 charge, and electric current is at this time without flow through leadage circuit, vent discharge
Road does not work；When the pulsating dc voltage of switch converters switching node SW is low level, leadage circuit is started to work, three poles
Pipe Q1 is connected, and is discharged by R1 to upper derided capacitors C1, can equally realize the effect of the first specific embodiment of leadage circuit
Fruit, but power-supply circuit 701 has higher efficiency.
Above example is only the preferred embodiment enumerated for flyback converter, is not construed as new to this practicality
The limitation of type.The scope of protection of the utility model should be subject to claim limited range.For correlation engineering technology
For personnel, without departing from the spirit and scope of the utility model, several improvements and modifications can also be made, these improve and
Retouching should be regarded as the scope of protection of the utility model.Since the type of switch converters is more, inconvenience herein enumerates explanation,
Correlation engineering technical staff can show that the utility model is applied to the design main points of switch converters and using other switches accordingly
Converter, these applications also should be regarded as the scope of protection of the utility model.In addition, although use some specific in this specification
Term, but these terms are merely for convenience of description, do not form any restrictions to the utility model.
Claims (9)
1. switch converters switching node power-supply circuit, it is characterised in that：Include the positive port of input voltage, input voltage negative terminal
Mouth, the positive port of output voltage, publicly output voltage negative terminal mouth, port, single-way switch module, capacitance partial pressure module and vent discharge
Road module；Input voltage negative terminal mouth is connected with output voltage negative terminal mouth, as publicly port；The positive port of input voltage is connected to out
It closes at converter switches node SW, and passes through single-way switch module and be connected with the input terminal of capacitance partial pressure module；Capacitance partial pressure mould
The another of block is connected to common mouth, and the output terminal of capacitance partial pressure module is connected with one end of leadage circuit module, as defeated
Go out positive voltage terminal mouth；The other end of leadage circuit module is connected with the tie point of single-way switch module and capacitance partial pressure module.
2. switch converters switching node power-supply circuit according to claim 1, it is characterised in that：Single-way switch module by
Diode D1 is formed；The anode extraction of diode D1 is connected at switch converters switching node SW, the input as power-supply circuit
Positive voltage terminal mouth；The cathode of diode D1 is connected with the input terminal of capacitance partial pressure module.
3. switch converters switching node power-supply circuit according to claim 1, it is characterised in that：Capacitance partial pressure module by
Upper derided capacitors C1 and lower derided capacitors C2 is formed；The output terminal of one end connection single-way switch module of upper derided capacitors C1, on
The other end of derided capacitors C1 is connected with lower derided capacitors C2, and lower the another of derided capacitors C2 is connected to common mouth, upper point
Draw the positive port of output voltage as power-supply circuit in the junction of voltage capacitance C1 and lower derided capacitors C2.
4. switch converters switching node power-supply circuit according to claim 1, it is characterised in that：Leadage circuit module is
One active electric network or passive network.
5. switch converters switching node power-supply circuit according to claim 4, it is characterised in that：Leadage circuit module by
Resistance R1 is formed；One end of resistance R1 is connect with the input terminal of capacitance partial pressure module, and the other end and output voltage of resistance R1 are just
Port is connected.
6. switch converters switching node power-supply circuit according to claim 4, it is characterised in that：Leadage circuit module by
Voltage-stabiliser tube Z1 and resistance R1 is formed；The anode of voltage-stabiliser tube Z1 is connect with the output terminal of capacitance partial pressure module, as power-supply circuit
The positive port of output voltage, the cathode of voltage-stabiliser tube Z1 are connected with one end of resistance R1, the other end and the capacitance partial pressure module of resistance R1
Input terminal connection.
7. switch converters switching node power-supply circuit according to claim 6, it is characterised in that：Resistance R1 and voltage-stabiliser tube
The location swap of Z1, i.e.,：One end of resistance R1 is connect with the output terminal of capacitance partial pressure module, the output voltage as power-supply circuit
Positive port, the other end of resistance R1 are connected with the anode of voltage-stabiliser tube Z1, the cathode of voltage-stabiliser tube Z1 and the input of capacitance partial pressure module
End is connected.
8. switch converters switching node power-supply circuit according to claim 4, it is characterised in that：Leadage circuit module by
Triode Q1, resistance R1 and resistance R2 are formed, and the collector of triode Q1 is connected with one end of resistance R1, the other end of resistance R1
It is connect with the output terminal of capacitance partial pressure module, the positive port of the output voltage as power-supply circuit, emitter and the electricity of triode Q1
The input terminal for holding division module is connected, and the base stage of triode Q1 is connected to by resistance R2 at switch converters switching node SW.
9. switch converters switching node power-supply circuit according to claim 8, it is characterised in that：Triode Q1 is PNP
Type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721708377.8U CN207573225U (en) | 2017-12-11 | 2017-12-11 | Switch converters switching node power-supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721708377.8U CN207573225U (en) | 2017-12-11 | 2017-12-11 | Switch converters switching node power-supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207573225U true CN207573225U (en) | 2018-07-03 |
Family
ID=62687425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721708377.8U Withdrawn - After Issue CN207573225U (en) | 2017-12-11 | 2017-12-11 | Switch converters switching node power-supply circuit |
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| Country | Link |
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| CN (1) | CN207573225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054903A (en) * | 2017-12-11 | 2018-05-18 | 广州金升阳科技有限公司 | Switch converters switching node power-supply circuit |
-
2017
- 2017-12-11 CN CN201721708377.8U patent/CN207573225U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054903A (en) * | 2017-12-11 | 2018-05-18 | 广州金升阳科技有限公司 | Switch converters switching node power-supply circuit |
| CN108054903B (en) * | 2017-12-11 | 2023-11-17 | 广州金升阳科技有限公司 | Switching node circuit for switching converter |
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