CN209313807U - Electric charge recycling circuit, power supply circuit and switching power circuit system - Google Patents
Electric charge recycling circuit, power supply circuit and switching power circuit system Download PDFInfo
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- CN209313807U CN209313807U CN201822145517.6U CN201822145517U CN209313807U CN 209313807 U CN209313807 U CN 209313807U CN 201822145517 U CN201822145517 U CN 201822145517U CN 209313807 U CN209313807 U CN 209313807U
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Abstract
It includes: the first one-way conduction control device, energy storage device and first switch that the utility model, which discloses a kind of electric charge recycling circuit, power supply circuit and switching power circuit system, the electric charge recycling circuit,；One end of the first one-way conduction control device is used to couple the base stage of a bipolar junction transistor BJT, other end couples energy memory device；The emitter of first switch coupling bipolar junction transistor BJT.When bipolar junction transistor BJT, which is needed, becomes shutdown from state, first switch is turned off, electric current flows to energy storage device via the collector of bipolar junction transistor BJT, base stage, the first one-way conduction control device, charges for energy storage device.The utility model proposes electric charge recycling circuit, power supply circuit and switching power circuit system, can be recycled shutdown BJT when base charge, system energy consumption is effectively reduced.
Description
Technical field
The utility model belongs to electronic technology field more particularly to a kind of electric charge recycling circuit, power supply circuit and switch
Power circuit system.
Background technique
BJT (bipolar junction transistor, bipolar junction transistor or triode) is current mode semiconductor devices, for NPN type
BJT transistor controls the conducting of BJT with the electric current Ib for flowing into base stage.After BJT is sufficiently conductive, if Ib electric current is reduced to 0,
The collector current (Ic) of BJT will not be reduced to 0 immediately, and this phenomenon is referred to as " current tail ".
If rapidly switching off BJT, it is necessary to extract very big negative current from base stage, the charge that base stage is added up discharges
Fall.What these charges being released usually lost in vain.
In view of this, nowadays there is an urgent need to design a kind of new electric current delivery mode, to overcome existing electric current release side
Drawbacks described above existing for formula.
Utility model content
The utility model provides a kind of electric charge recycling circuit, power supply circuit and switching power circuit system, can be recycled and closes
Base charge when disconnected BJT.
In order to solve the above technical problems, one aspect according to the present utility model, adopts the following technical scheme that
A kind of electric charge recycling circuit, the electric charge recycling circuit include:
First one-way conduction control device；
Energy storage device, wherein one end of the first one-way conduction control device is for coupling a bipolar junction transistor
The base stage of pipe BJT, other end couples energy memory device；And
First switch S1, for coupling the emitter of the bipolar junction transistor BJT.
As one embodiment of the present invention, the first one-way conduction control device is first diode D1；It is described
Energy storage device is first capacitor C1, and first capacitor C1 is the load of energy regenerating, for storing the energy of recycling；
The base stage of the anode coupling bipolar junction transistor BJT of first diode D1, the cathode coupling of first diode D1
The first end of first capacitor C1；The second end of first capacitor C1 is grounded.
As one embodiment of the present invention, the electric charge recycling circuit includes BJT control circuit, BJT control circuit
Couple the base stage of the bipolar junction transistor BJT；The BJT control circuit provides conducting institute for bipolar junction transistor BJT
The electric current Ib needed.
As one embodiment of the present invention, the BJT control circuit includes BJT driving circuit, the second one-way conduction
Control device, BJT driving circuit are connected with the second one-way conduction control device, the other end coupling of the second one-way conduction control device
Connect the control terminal of BJT.
As one embodiment of the present invention, the BJT control circuit connects first switch S1, to first switch
S1 sends the control signal of its switch of control.
A kind of power supply circuit, the power supply circuit include above-mentioned electric charge recycling circuit.
A kind of switching power circuit system, the switching power circuit system include:
Switching circuit, including bipolar junction transistor BJT；
Control circuit is coupled with the switching circuit, to send control signal to the bipolar junction transistor BJT；
Power supply circuit, including above-mentioned electric charge recycling circuit, the power supply circuit and the switching circuit are coupled, to
Control circuit conveys supply current.
As one embodiment of the present invention, the power supply circuit further includes at least one first power supply, passes through the first electricity
Source is that energy storage device charges for providing supply voltage.
As one embodiment of the present invention, the switching circuit is inverse-excitation type voltage conversion circuit, and dipole is brilliant
The emitter of body pipe BJT couples the primary side winding L1 of inverse-excitation type voltage conversion circuit by first switch S1；Alternatively, the switch
Circuit is buck circuit, the inductance component coupling of bipolar junction transistor BJT and buck circuit.
The utility model has the beneficial effects that: the utility model proposes electric charge recycling circuit and method, power supply circuit
And method, switching power circuit system, base charge when shutdown BJT can be recycled, system energy consumption is effectively reduced.The utility model
Other specific advantages will be embodied in following specific embodiment.
Detailed description of the invention
Fig. 1 is the circuit diagram of electric charge recycling circuit in an embodiment of the present invention.
Fig. 2 is the circuit diagram of electric charge recycling circuit in an embodiment of the present invention.
Fig. 3 is the circuit diagram of switching power circuit system in an embodiment of the present invention.
Specific embodiment
The preferred embodiment that according to the present invention will be described in detail below with reference to the accompanying drawings.
For a further understanding of the utility model, the utility model preferred embodiment is retouched below with reference to embodiment
It states, but it is to be understood that these descriptions are only the feature and advantage for further illustrating the utility model, rather than practical to this
The limitation of novel claim.
Just for several typical embodiments, the utility model is not limited merely to embodiment description for the description of the part
Range.Some technical characteristics in same or similar prior art means and embodiment are replaced mutually also practical new at this
In the range of type describe and claim.
" coupling " or " connecing " in specification includes to be directly connected to, also comprising being indirectly connected with, such as such as by electrically-conducting medi
The connection of conductor, wherein the electrically-conducting medi can contain parasitic inductance or parasitic capacitance.It may also include those skilled in the art's public affairs
That knows passes through the connection of other active devices or passive device on the basis of same or similar function purpose can be achieved, such as by opening
Close, follow the connection of the circuits such as circuit or component.
The utility model discloses a kind of electric charge recycling circuit, and the electric charge recycling circuit includes: the first one-way conduction control
Device, energy storage device and the switch with BJT coupling processed.One end of the first one-way conduction control device is for coupling one
The base stage of bipolar junction transistor BJT, other end couples energy memory device.
Fig. 1 is the circuit diagram of electric charge recycling circuit in an embodiment of the present invention.Referring to Fig. 1, practical at this
In a novel embodiment, the first one-way conduction control device is first diode D1；The energy storage device is the
One capacitor C1, first capacitor C1 are the load of energy regenerating, for storing the energy of recycling；The energy can be used to power, such as
It can be control chip power supply.
As shown in Figure 1, the electric charge recycling circuit further includes first switch S1；The first switch S1 is described for coupling
The emitter of bipolar junction transistor BJT.
The base stage of the anode coupling bipolar junction transistor BJT of first diode D1, the cathode coupling of first diode D1
The first end of first capacitor C1；The second end of first capacitor C1 is grounded.Preferably, the second termination control ground of first capacitor C1,
As shown in Figure 3.The first end of the first switch S1 couples the emitter of the bipolar junction transistor BJT, first switch S1
Second end ground connection.
In an embodiment of the utility model, the electric charge recycling circuit includes the bipolar junction transistor BJT.Such as
Shown in Fig. 1, the electric charge recycling circuit may also include BJT control circuit, and BJT control circuit couples bipolar junction transistor BJT
Base stage；Electric current Ib needed for BJT control circuit provides conducting for bipolar junction transistor BJT.Bipolar junction transistor BJT is led
Before logical, first switch S1 need to be closed.After bipolar junction transistor BJT conducting, the electric current of main circuit flows through the collector of BJT, hair
Emitter-base bandgap grading and first switch S1.When needing to turn off bipolar junction transistor BJT, directly shutdown first switch S1.Main circuit due to
There is the presence of parasitic inductance or other main circuit inductance, electric current will not be mutated, and electric current can be via bipolar junction transistor BJT
Collector, base stage, first diode D1 flow to first capacitor C1.In the process, the charge of bipolar junction transistor BJT base stage
It is recycled by first capacitor C1.
Fig. 2 is the circuit diagram of electric charge recycling circuit in an embodiment of the present invention；Referring to Fig. 2, practical at this
In a novel embodiment, the BJT control circuit includes BJT driving circuit, the second one-way conduction control device, BJT driving
Circuit is connected with the second one-way conduction control device, and the control terminal of the other end coupling BJT of the second one-way conduction control device makes
The electric current for obtaining BJT base stage will not flow to BJT drive module.In an embodiment of the utility model, the control of the second one-way conduction
Device is the second diode D2；The output end of BJT driving circuit couples the anode of the second diode D2, and the second diode D2's is negative
The base stage of pole coupling bipolar junction transistor BJT.
By the way that the second diode D2, when bipolar junction transistor BJT is turned off by first switch S1, BJT is arranged
Driving circuit will not extract negative current to the base stage of bipolar junction transistor BJT, and extra electric current is used for first capacitor
C1 charges for providing supply voltage Vcc.
When first switch S1 shutdown, first diode D1 conducting electric current is from bipolar junction transistor BJT base stage to first
Capacitor C1 charging, the end Vb voltage (base voltage of bipolar junction transistor BJT) is raised to Vcc+Ve at this time, wherein Ve the
The PN junction voltage of one diode D1, such as about 0.7V.Since voltage Va (BJT driving circuit output voltage) is based on voltage vcc
It generates, the voltage value of voltage vcc is greater than the voltage value of voltage Va, and the second diode D2 reversely ends, and electric current will not flow to BJT
Driving circuit guarantees that unwanted currents flow into first capacitor C1, a part as power supply circuit.And BJT driving circuit at this time
Output voltage can remain unchanged, without controlling BJT driving circuit.
The utility model discloses a kind of charge recovery method using above-mentioned electric charge recycling circuit: in bipolar junction transistor
When BJT is become an OFF state by state, electric current is unidirectionally led via the collector of bipolar junction transistor BJT, base stage, first
Ventilating controller part flows to energy storage device, charges for energy storage device.
In an embodiment of the utility model, the charge recovery method is specifically included:
Under bipolar junction transistor BJT on state, the electric current of main circuit flows through the current collection of bipolar junction transistor BJT
Pole, emitter and first switch S1；
Control signal, control first switch S1 shutdown are sent to first switch S1；Main circuit current will not be mutated, electric current warp
It is flowed to energy by the collector of bipolar junction transistor BJT, base stage, the first one-way conduction control device (first diode D1) and is deposited
Memory device (first capacitor C1)；In the process, the charge of bipolar junction transistor BJT base stage is by energy storage device (first
Capacitor C1) recycling.
The utility model discloses a kind of power supply circuit, sees Fig. 1, and the power supply circuit includes above-mentioned charge recycling electricity
Road, the i.e. a part of the utility model electric charge recycling circuit as power supply circuit.In an embodiment of the utility model, power supply
Circuit includes the first one-way conduction control device, energy storage device；One end of the first one-way conduction control device is used for
Couple the base stage of a bipolar junction transistor BJT, other end couples energy memory device.First one-way conduction control device, energy
Measure a part of memory device as power supply circuit.
In an embodiment of the utility model, power supply circuit may include that other power supplys or the first power supply (can have
It is one or more), such as supply voltage Vcc is provided by coupling input voltage vin or auxiliary winding.
In an embodiment of the utility model, the first one-way conduction control device is first diode D1；It is described
Energy storage device is first capacitor C1, and first capacitor C1 is the load of energy regenerating, for storing the energy of recycling.
As shown in Figure 1, the electric charge recycling circuit further includes first switch S1 in an embodiment of the utility model；
The first switch S1 is used to couple the emitter of the bipolar junction transistor BJT.The anode coupling of first diode D1 is double
The base stage of pole junction transistor BJT, the first end of the cathode coupling first capacitor C1 of first diode D1；The of first capacitor C1
Two ends ground connection.The first end of the first switch S1 couples the emitter of the bipolar junction transistor BJT, first switch S1's
Second end ground connection.
In an embodiment of the utility model, the power supply circuit includes the bipolar junction transistor BJT.Such as Fig. 1
Shown, the electric charge recycling circuit includes BJT control circuit, and BJT control circuit couples the base stage of bipolar junction transistor BJT；
Electric current Ib needed for BJT control circuit provides conducting for bipolar junction transistor BJT.
Before bipolar junction transistor BJT conducting, first switch S1 need to be closed.After bipolar junction transistor BJT conducting, main electricity
The electric current on road flows through the collector, emitter and first switch S1 of BJT.When needing to turn off bipolar junction transistor BJT, directly
Turn off first switch S1.Main circuit is due to there is the presence of parasitic inductance or other main circuit inductance, and electric current will not be mutated, electric current
First capacitor C1 can be flowed to via the collector of bipolar junction transistor BJT, base stage, first diode D1.In the process, double
The charge of pole junction transistor BJT base stage is recycled by first capacitor C1.
In an embodiment of the utility model, the BJT control circuit includes BJT driving circuit, the second one-way conduction
Control device, BJT driving circuit are connected with the second one-way conduction control device, so that the electric current of BJT base stage will not flow to BJT drive
Dynamic model block.In an embodiment of the utility model, the second one-way conduction control device is the second diode D2.
By the way that the second diode D2, when bipolar junction transistor BJT is turned off by first switch S1, BJT is arranged
Driving circuit is not necessarily to extract negative current to the base stage of bipolar junction transistor BJT, and extra electric current is used for first capacitor
C1 charges for providing supply voltage Vcc.
When first switch S1 shutdown, first diode D1 conducting electric current is from bipolar junction transistor BJT base stage to first
Capacitor C1 charging, the end Vb voltage (base voltage of bipolar junction transistor BJT) is raised to Vcc+Ve at this time, wherein Ve the
The PN junction voltage of one diode D1, such as about 0.7V.Since voltage Va (BJT driving circuit output voltage) is based on voltage vcc
It generates, the voltage value of voltage vcc is greater than the voltage value of voltage Va, and the second diode D2 reversely ends, and electric current will not flow to BJT
Driving circuit guarantees that unwanted currents flow into first capacitor C1, a part as power supply circuit.And BJT driving circuit at this time
Output voltage can remain unchanged, without controlling BJT driving circuit.
The utility model discloses a kind of method of supplying power to using above-mentioned power supply circuit, in bipolar junction transistor BJT by needing
When being become an OFF state by state, turn off first switch S1, electric current via bipolar junction transistor BJT collector,
Base stage, the first one-way conduction control device flow to energy storage device, charge for energy storage device；Energy storage device is to use
Electrical components provide power supply.
In an embodiment of the utility model, the method for supplying power to include: by the first power supply (such as Vin or auxiliary around
The voltage generated in group) it charges to first capacitor C1；Shutdown turns off the electric current main road of BJT with the concatenated switch of BJT emitter,
Make current flow through BJT collector and base stage and by first diode D1 to first capacitor C1 charge；And by this first
Capacitor C1 provides supply voltage.
In an embodiment of the utility model, the method for supplying power to is specifically included:
Under bipolar junction transistor BJT on state, the electric current of main circuit flows through the current collection of bipolar junction transistor BJT
Pole, emitter and first switch S1；
Control signal, control first switch S1 shutdown are sent to first switch S1；Main circuit current will not be mutated, electric current warp
It is flowed to energy by the collector of bipolar junction transistor BJT, base stage, the first one-way conduction control device (first diode D1) and is deposited
Memory device (first capacitor C1)；In the process, the charge of bipolar junction transistor BJT base stage is by energy storage device (first
Capacitor C1) recycling；Energy storage device (first capacitor C1) provides power supply using the energy of recycling for electrical component.
The utility model discloses a kind of switching power circuit system, and Fig. 3 is Switching Power Supply in an embodiment of the present invention
The circuit diagram of circuit system；Referring to Fig. 3, in an embodiment of the utility model, the switching power circuit system
It include: switching circuit 10, control circuit 20 and power supply circuit 30.Switching circuit 10 includes bipolar junction transistor BJT；Control electricity
Road 20 and the switching circuit 10 couple, to send control signal Vb to the switching circuit 10.
As shown in figure 3, power supply circuit 30 includes electric charge recycling circuit, power supply circuit 30 and the switching circuit 10 are coupled,
To convey supply current to electrical component.In an embodiment of the utility model, the electric charge recycling circuit includes: first
Diode D1, first capacitor C1 and first switch S1.The base of the anode coupling bipolar junction transistor BJT of first diode D1
Pole, the first end of the cathode coupling first capacitor C1 of first diode D1；The second termination control ground of first capacitor C1, control ground
For the reference ground of control circuit 20.The first end of the first switch S1 couples the emitter of the bipolar junction transistor BJT,
The second end of first switch S1 is grounded or the rest part of coupling switching circuit 10.
Please continue to refer to Fig. 3, in an embodiment of the utility model, the control circuit 20 includes BJT driving circuit
21, the second one-way conduction control device (can be the second diode D2), BJT driving circuit 21 and the second one-way conduction controller
Part series connection, so that the electric current of BJT base stage will not flow to BJT drive module.In an embodiment of the utility model, second is unidirectional
Conducting control device is the second diode D2.The anode of the second diode D2 of output end coupling of BJT driving circuit 21, the two or two
The base stage of the cathode coupling bipolar junction transistor BJT of pole pipe D2.
By the way that the second diode D2, when bipolar junction transistor BJT is turned off by first switch S1, BJT is arranged
Driving circuit is not necessarily to extract negative current to the base stage of bipolar junction transistor BJT, and extra electric current is used for first capacitor
C1 charges for providing supply voltage Vcc.
Before bipolar junction transistor BJT conducting, first switch S1 need to be closed.After bipolar junction transistor BJT conducting, main electricity
The electric current on road flows through the collector, emitter and first switch S1 of BJT.When needing to turn off bipolar junction transistor BJT, directly
Turn off first switch S1.Main circuit is due to there is the presence of parasitic inductance or other main circuit inductance, and electric current will not be mutated, electric current
First capacitor C1 can be flowed to via the collector of bipolar junction transistor BJT, base stage, first diode D1.In the process, double
The charge of pole junction transistor BJT base stage is recycled by first capacitor C1.
In an embodiment of the utility model, the power supply circuit further includes one first power supply, is used for capacitor C1 charging
In offer supply voltage Vcc；Such as supply voltage Vcc can be provided by coupling input voltage vin or auxiliary winding.
In an embodiment of the utility model, the switching circuit includes inverse-excitation type voltage conversion circuit, dipole
The emitter of transistor BJT couples primary side winding L1 by switch S1.In another embodiment, bipolar junction transistor BJT
Collector couple primary side winding.As shown in figure 3, switching circuit 10 further includes primary side winding L1, vice-side winding L2, output capacitance
Co；The first end of output capacitance Co couples the first end of vice-side winding L2, the second end of output capacitance Co by second switch S2
Couple the second end of vice-side winding L2.
In another embodiment of the utility model, the switching circuit be buck circuit, bipolar junction transistor BJT with
The inductance component of buck circuit couples.Certainly, BJT can also be used for other circuit topologies, for the inductor in these circuits
Part coupling.
Referring to Fig. 3, power supply circuit 30 passes through the first power supply and charge recycling electricity in an embodiment of the utility model
Road charges to first capacitor C1 and generates supply voltage Vcc on first capacitor C1, (can be also possible to other for control circuit
Electrical component) power supply.Wherein control circuit 20 includes BJT driving circuit 21, the second diode D2；By the way that the second diode is arranged
When first switch S1 is turned off and turned off, BJT driving circuit 21 is not necessarily to bipolar junction transistor by D2, bipolar junction transistor BJT
The base stage of pipe BJT extracts negative current, and extra electric current is used to charge to first capacitor C1, to be subsequently used for providing power supply
Voltage vcc.
In an embodiment of the utility model, the control circuit 20 further connects first switch S1, can be to first
Switch S1, which is sent, controls its control signal opened or closed.First switch S1 can control based on the received signal carry out closure or
Shutdown.
When first switch S1 shutdown, first diode D1 conducting electric current is from bipolar junction transistor BJT base stage to first
Capacitor C1 charging, the end Vb voltage (base voltage of bipolar junction transistor BJT) is raised to Vcc+Ve at this time；Wherein, Ve
The PN junction voltage of one diode D1, such as about 0.7V.Since voltage Va (BJT driving circuit output voltage) is based on voltage vcc
It generates, the voltage value of voltage vcc is greater than the voltage value of voltage Va, and the second diode D2 reversely ends, and electric current will not flow to BJT
Driving circuit guarantees that unwanted currents flow into first capacitor C1, makes its a part as power supply circuit.And BJT drives at this time
The output voltage of circuit can remain unchanged, without controlling BJT driving circuit.
In conclusion the utility model proposes electric charge recycling circuit and method, power supply circuit and method, switch power supply
Road system can be recycled base charge when shutdown BJT, system energy consumption be effectively reduced.
Here the description and application of the utility model are illustrative, are not wishing to for the scope of the utility model being limited in
It states in embodiment.The deformation and change of embodiments disclosed herein be it is possible, for the ordinary skill people of those this fields
The replacement of embodiment and equivalent various parts are well known for member.It should be appreciated by the person skilled in the art that not taking off
In the case where spirit or essential characteristics from the utility model, the utility model can in other forms, structure, arrangement, ratio,
And it is realized with other components, material and component.It, can be to this in the case where not departing from the scope of the utility model and spirit
In disclosed embodiment carry out other deformations and change.
Claims (10)
1. a kind of electric charge recycling circuit, which is characterized in that the electric charge recycling circuit includes:
First one-way conduction control device；
Energy storage device, wherein one end of the first one-way conduction control device is for coupling a bipolar junction transistor
The base stage of BJT, other end couples energy memory device；And
First switch S1, for coupling the emitter of the bipolar junction transistor BJT.
2. electric charge recycling circuit according to claim 1, it is characterised in that:
The first one-way conduction control device is first diode D1；The energy storage device be first capacitor C1, first
Capacitor C1 is the load of energy regenerating, for storing the energy of recycling；
The base stage of the anode coupling bipolar junction transistor BJT of first diode D1, the cathode coupling first of first diode D1
The first end of capacitor C1；The second termination control ground of first capacitor C1.
3. electric charge recycling circuit according to claim 1, it is characterised in that:
The electric charge recycling circuit includes BJT control circuit, and BJT control circuit couples the base of the bipolar junction transistor BJT
Pole；Electric current Ib needed for the BJT control circuit provides conducting for bipolar junction transistor BJT.
4. electric charge recycling circuit according to claim 3, it is characterised in that:
The BJT control circuit includes BJT driving circuit, the second one-way conduction control device, and BJT driving circuit and second is unidirectionally
Control device series connection, the control terminal of the other end coupling BJT of the second one-way conduction control device is connected.
5. electric charge recycling circuit according to claim 3, it is characterised in that:
The BJT control circuit connects first switch S1, to send the control signal of its switch of control to first switch S1.
6. a kind of power supply circuit, which is characterized in that the power supply circuit includes the recycling electricity of charge described in one of claim 1 to 5
Road.
7. a kind of switching power circuit system, which is characterized in that the switching power circuit system includes:
Switching circuit, including bipolar junction transistor BJT；
Control circuit is coupled with the switching circuit, to send control signal to the bipolar junction transistor BJT；
Power supply circuit, including the electric charge recycling circuit as described in one of claim 1 to 5, the power supply circuit and the switch
Circuit coupling, to convey supply current to control circuit.
8. switching power circuit system according to claim 7, it is characterised in that:
The power supply circuit further includes at least one first power supply, is energy accumulator by the first supply coupling capabilities memory part
Part charges for providing supply voltage.
9. switching power circuit system according to claim 7, it is characterised in that:
The switching circuit is inverse-excitation type voltage conversion circuit, and the emitter of bipolar junction transistor BJT passes through first switch S1
Couple the primary side winding L1 of inverse-excitation type voltage conversion circuit.
10. switching power circuit system according to claim 7, it is characterised in that:
The switching circuit is buck circuit, the inductance component coupling of bipolar junction transistor BJT and buck circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145517.6U CN209313807U (en) | 2018-12-20 | 2018-12-20 | Electric charge recycling circuit, power supply circuit and switching power circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145517.6U CN209313807U (en) | 2018-12-20 | 2018-12-20 | Electric charge recycling circuit, power supply circuit and switching power circuit system |
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| Publication Number | Publication Date |
|---|---|
| CN209313807U true CN209313807U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822145517.6U Active CN209313807U (en) | 2018-12-20 | 2018-12-20 | Electric charge recycling circuit, power supply circuit and switching power circuit system |
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| CN (1) | CN209313807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547000A (en) * | 2018-12-20 | 2019-03-29 | 深圳市必易微电子有限公司 | Electric charge recycling circuit and method, power supply circuit and method and switching power circuit system |
-
2018
- 2018-12-20 CN CN201822145517.6U patent/CN209313807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547000A (en) * | 2018-12-20 | 2019-03-29 | 深圳市必易微电子有限公司 | Electric charge recycling circuit and method, power supply circuit and method and switching power circuit system |
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Address after: Room 3303, block a, block 8, block C, Wanke Yuncheng phase III, Liuxin 4th Street, Xili community, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Biyi Microelectronics Co., Ltd Address before: 518055 2 302, nine Xiang Ling new industrial zone, 4227 Xili Hu Road, Nanshan District, Shenzhen, Guangdong. Patentee before: SHENZHEN KIWI MICROELECTRONIC Co.,Ltd. |