CN209593283U - Dual chip power circuit - Google Patents
Dual chip power circuit Download PDFInfo
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- CN209593283U CN209593283U CN201822256187.8U CN201822256187U CN209593283U CN 209593283 U CN209593283 U CN 209593283U CN 201822256187 U CN201822256187 U CN 201822256187U CN 209593283 U CN209593283 U CN 209593283U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a kind of dual chip power circuits, including inductance, one-way conduction element, the first chip and the second chip, second built-in chip type first switch tube, first switch tube, inductance and breakover element connect composition power supply architecture, and the first chip is connect with the second chip；First chip includes signal processing unit, and signal processing unit receives feedback signal；Second chip further includes first switch control circuit, and first switch control circuit controls the turn-on and turn-off of first switch tube；The low-voltage end of the output end of power circuit is the reference ground of the signal processing unit of the first chip；The common end of inductance and one-way conduction element is the reference ground of the first switch control circuit of the second chip；The output end of power circuit is the first output end.The utility model can adjust output voltage real-time, quickly, guarantee the stability and dynamic load control characteristic of output voltage.
Description
Technical field
The utility model relates to power electronics fields, and in particular to a kind of dual chip power circuit.
Background technique
In high-pressure process, the end DRAIN of only metal-oxide-semiconductor can be born high pressure (about 700V), and the other termination of metal-oxide-semiconductor with
And other devices can only all bear low pressure (about within 50V).It is using high in dotted line frame as shown in Figure 1, being BUCK reduction voltage circuit
The chip of technique, including metal-oxide-semiconductor Q1 and drive control circuit are pressed, wherein switching node SW is the reference ground GND of the chip.Driving
Control circuit is by output divider resistance R1 and R2 come sampling and outputting voltage Vo.It is turned off in sustained diode 1, metal-oxide-semiconductor Q1 conducting
When, the voltage of SW is equal to input voltage, the voltage that feedback voltage FB is up-sampled be output voltage and input voltage it
Difference；Only when metal-oxide-semiconductor Q1 shutdown is connected in sustained diode 1, the voltage of SW is equal to the cold end of output voltage,
The voltage that feedback voltage FB is up-sampled is output voltage.Therefore when output load current state is when metal-oxide-semiconductor Q1 is connected
Time changes, and drive control circuit is cannot to detect the variation of output voltage, could examine after waiting metal-oxide-semiconductor Q1 to turn off again
It surveys and the voltage value that output voltage Vo returns to setting is adjusted by drive control circuit.This mode can not quick response output electricity
The variation of pressure.Especially under conditions of light load working frequency is very low, the time that holds off interval of Q1 is very long, and load current is jumped
Output variation adjustment speed caused by becoming is slower.
Utility model content
In view of this, being used the purpose of this utility model is to provide a kind of dual chip power circuit using high-pressure process
With solve the problems, such as in the prior art can not quick response output voltage variation.
The technical solution of the utility model is to provide dual chip power circuit, including inductance, breakover element, first
Chip and the second chip, second built-in chip type have first switch tube, and the first switch tube, inductance are connected with breakover element
Power supply architecture is formed, the first chip is connect with the second chip；First chip includes signal processing unit, the signal processing
Unit receives feedback signal；Second chip further includes first switch control circuit, the first switch control circuit control
The turn-on and turn-off of the first switch tube；The low-voltage end of the output end of power circuit is the signal processing of first chip
The reference ground of unit；The common end of the inductance and the breakover element is the first switch control circuit of second chip
With reference to ground；The feedback signal characterization output voltage, output electric current, output power, input voltage, input current or input work
Rate, the output end of the power circuit are the first output end.
As optional, the signal processing unit of first chip includes signal transmission transmitting line；Second chip
First switch control circuit include signal transmission receiving circuit；The signal transmission transmitting line turns the signal for needing to transmit
Change transmission signal into, the signal transmission receiving circuit receives the transmission signal, and is converted into first control signal.
As optional, first chip further includes the first power supply circuit, and first power supply circuit is at the signal
Unit power supply is managed, on startup, input terminal is powered by first power supply circuit to the signal processing unit, when output electricity
When pressure is established, output end is powered by first power supply circuit to the signal processing unit.
As optional, first chip further includes the first power supply circuit, and first power supply circuit is at the signal
Unit power supply is managed, on startup, the first switch tube of second chip is switched, when output voltage is established, output end
It is powered by first power supply circuit to the signal processing unit, the first switch control circuit of second chip receives
The voltage of the signal processing unit carries out switch control to the first switch tube.
As optional, second chip further includes the second power supply circuit, and second power supply circuit is opened to described first
Control circuit power supply is closed, on startup, input terminal is powered by second power supply circuit to the first switch control circuit,
When output voltage is established, output end is powered by second power supply circuit to the first switch control circuit.
As optional, first chip further includes second source circuit, and output end connects by the second source circuit
It is connected to second output terminal, voltage is the second output voltage.
As optional, the second source circuit is switching mode circuit or linear circuit.
As optional, the output end is connected to the low-voltage end of the power circuit output end by LED light, described
LED light electric current is the feedback signal, and the signal processing unit samples LED light electric current and receives dim signal, passes through adjusting
First switch tube control electrode is so that LED light electric current changes with dim signal.
As optional, the output end is connected to the power supply by the series circuit that LED light and third switching tube are formed
The low-voltage end of circuit output end, the LED light electric current are the feedback signal, the signal processing unit sampling LED light electricity
Stream, and dim signal is received, dim signal is by control third switch controlled pole so that LED light electric current is believed with light modulation
Number and change, wherein third switching tube work in switch state.
As optional, the output end is connected to described by the series circuit that the 4th LED light and the 4th switching tube are formed
The low-voltage end of power circuit output end, the output end are connected by the series circuit that the 5th LED light and the 5th switching tube are formed
It is connected to the low-voltage end ... ... of the power circuit output end, and so on, the output end is opened by N LED light and N
Close the low-voltage end that the series circuit that pipe is formed is connected to the power circuit output end；The signal processing unit receives light modulation
Signal adjusts the 4th switch controlled pole to N switch controlled pole so that from the 4th LED light according to the dim signal
Electric current to N LED light changes with dim signal, wherein N is the integer more than or equal to 5.
Using the circuit structure of the utility model, compared with prior art, has the advantage that and be connected and close in switching tube
It may detect that output voltage when disconnected, it can be with the variation of quick response output voltage.
Detailed description of the invention
Fig. 1 schematically shows the BUCK reduction voltage circuit using conventional high-tension processing chip；
Fig. 2 schematically shows the BUCK reduction voltage circuits according to the utility model embodiment；
Fig. 3 is schematically shown to be shown according to first chip of the utility model embodiment and the circuit structure of the second chip
It is intended to；
Fig. 4 schematically shows the BUCK reduction voltage circuits according to another embodiment of the utility model；
Fig. 5 schematically shows the electrical block diagram of first power supply circuit 120 of the utility model embodiment；
Fig. 6 schematically shows the BUCK reduction voltage circuit according to another embodiment of the utility model；
Fig. 7 schematically shows the structural schematic diagram of the second chip according to the utility model embodiment；
Fig. 8 schematically shows the electrical block diagram of second power supply circuit 220 of the utility model embodiment；
Fig. 9 schematically shows the BUCK-BOOST step-up/step-down circuit according to an embodiment of the present invention；
Figure 10 schematically shows the structural schematic diagram of the dual output power circuit according to the utility model embodiment；
Figure 11 is schematically shown to be illustrated according to the circuit structure of the second source circuit 120 of the utility model embodiment
Figure；
Figure 12 schematically shows the circuit structure of the second source circuit 120 according to another embodiment of the utility model
Schematic diagram；
Figure 13 schematically shows the BUCK reduction voltage circuit according to the load of an embodiment of the present invention for LED light；
Figure 14 is schematically shown according to the BUCK decompression electricity that the load of another embodiment of the utility model is LED light
Road；
Figure 15 is schematically shown according to the BUCK decompression electricity that the load of an embodiment of the present invention is multi-string LED lamp
Road.
Specific embodiment
It is described in detail below in conjunction with preferred embodiment of the attached drawing to the utility model, but the utility model is not merely
It is limited to these embodiments.The utility model covers any substitution made in the spirit and scope of the utility model, modification, equivalent
Method and scheme.
In order to make the public have thorough understanding to the utility model, in following the preferred embodiment in the utility model specifically
Concrete details is illustrated, and that this can also be understood completely is practical new for description without these details for a person skilled in the art
Type.
The utility model is more specifically described by way of example referring to attached drawing in the following passage.It should be noted that attached drawing
It is all made of more simplified form and uses non-accurate ratio, only to facilitate, lucidly aid in illustrating the utility model
The purpose of embodiment.
The utility model provides a kind of dual chip power circuit, please refers to shown in Fig. 2, including inductance L1, breakover element D1,
First chip 100 and the second chip 200, second chip 200 include first switch tube Q210 and first switch control circuit
210, first chip includes signal processing unit 110；The input terminal of power circuit is connected to the of second chip 200
The first end of one switching tube Q210, the second end of the first switch tube Q210 of second chip 200 are connected to the inductance L1
With the common end of the breakover element D1, the signal processing unit 110 of first chip receives feedback signal FB, and described second
The first switch control circuit 210 of chip 200 receives the output voltage A of first chip；The first switch control circuit
210 are connected to the control terminal of first switch tube Q210；The low-voltage end of the output end of the power circuit is first chip
Signal processing unit 110 reference ground；The common end of the inductance L1 and the breakover element D1 are second chip
The reference ground of first switch control circuit 210；The feedback signal FB characterization output voltage, output electric current, output power, input
Voltage, input current or input power.
In high-pressure process, the end DRAIN of only metal-oxide-semiconductor can be born high pressure (about 700V), and the other termination of metal-oxide-semiconductor with
And other devices can only all be born low pressure (about within 50V), therefore above-mentioned dual chip power circuit applies spy in high-pressure process
It is unsuitable.But the application of dual chip power circuit is not limited only to high-pressure process, also can be applied in other techniques, such as
Perhaps the first chip uses the second chip of low pressure process using BCD technique or high-pressure process etc. to BCD technique.In the embodiment
In, the first chip includes first switch tube Q210, and in another embodiment, the first chip does not include first switch tube Q210.
Therefore, when encapsulation, it may be desirable to which, by three chips, the first chip, the second chip and first switch tube are encapsulated into one
In a encapsulation.Therefore the saying of " dual chip " of this patent is not limited to the meaning of the chip containing there are two in an encapsulation, can
More than two chips can be had in a package.Sometimes, we can also call the first chip the first wafer, the second core
Piece is known as the second wafer, come indicate be encapsulation before.
It is to illustrate dual chip power circuit by taking BUCK reduction voltage circuit as an example in Fig. 2, the dual chip power circuit is not only
It is confined to BUCK reduction voltage circuit, can be other kinds of Switching Power Supply, such as BUCK-BOOST step-up/step-down circuit.
In one embodiment, it please refers to shown in Fig. 3, the signal processing unit 110 of first chip is passed including signal
Defeated transmitting line 113；The first switch control circuit 210 of second chip includes signal transmission receiving circuit 213；The letter
Number transmission transmitting line will need the signal transmitted to be converted into transmission signal A, and the signal transmission receiving circuit 213 receives described
Signal A is transmitted, and is converted into first control signal.
It please refers to shown in Fig. 4, first chip 100 further includes the first power supply circuit 120, first power supply circuit
120 power to the signal processing unit 110, on startup, input terminal VINThe letter is given by first power supply circuit 120
Number processing unit 110 is powered, and when output voltage is established, output end is by first power supply circuit 120 at the signal
Unit 110 is managed to power.
It please refers to shown in Fig. 5, is a kind of embodiment of the first power supply circuit 120, the first power supply circuit includes high pressure
JFET 121, one-way conduction element 122, comparison circuit 123 and capacitor C220.Power circuit starting when, power circuit it is defeated
Enter voltage VINIt is charged by high pressure JET 121 to capacitor C220, comparison circuit 123 compares voltage and reference voltage on capacitor C220
REF2.When voltage is greater than reference voltage REF2 on capacitor C220,123 output switching activity of comparison circuit, high pressure JFET is not enabled, electricity
The output end of source circuit is powered by one-way conduction element 122 to capacitor C220.When output voltage is not set up also, and comparison circuit
123 have overturn, then the voltage of capacitor C220 can be reduced to reference voltage REF2 hereinafter, then meeting since output voltage is insufficient
It is powered by high pressure JFET to capacitor C220.When output voltage is sufficiently high, is powered by one-way conduction element to capacitor C220,
Voltage on capacitor C220 is higher than reference voltage REF2.
In another power supply mode, the first power supply circuit only receives output end voltage, without receiving input terminal voltage,
It please refers to shown in Fig. 6, first chip further includes the first power supply circuit, and first power supply circuit gives the signal processing list
Member power supply, on startup, the first switch tube of second chip is switched, and when output voltage is established, output end passes through
First power supply circuit is powered to the signal processing unit, described in the first switch control circuit reception of second chip
The voltage of signal processing unit carries out switch control to the first switch tube.That is, on startup, output voltage does not have
When setting up, no power supply charges to signal processing unit 110, and signal processing unit 110 does not also work, at this point,
210 control switch pipe Q210 of first switch control circuit switch, be not according to the output of signal processing unit 110, but
According to the internal signal of first switch control circuit 210.When the output voltage of power circuit is set up, power circuit
Output voltage is powered to the first power supply circuit 120, and signal processing unit 110 works, and first switch control circuit 210 receives signal
The output voltage A of processing unit 110, and according to output voltage A come the switch of control switch pipe Q210.
According to Fig.7, the second chip 200 further includes the second power supply circuit 220, and second power supply circuit 220 gives institute
The power supply of first switch control circuit is stated, on startup, input terminal gives the first switch control by second power supply circuit 220
Circuit 210 processed is powered, and when output voltage is established, output end gives the first switch control by second power supply circuit 220
Circuit power supply processed.
It please refers to shown in Fig. 8, is a kind of embodiment of the second power supply circuit 220, the second power supply circuit includes high pressure
JFET 221, one-way conduction element 222, comparison circuit 223 and capacitor C220.Power circuit starting when, power circuit it is defeated
Enter voltage VINIt is charged by high pressure JET 221 to capacitor C220, comparison circuit 223 compares voltage and reference voltage on capacitor C220
REF2.When voltage is greater than reference voltage REF2 on capacitor C220,223 output switching activity of comparison circuit, high pressure JFET 221 does not make
Can, the output end of power circuit is powered by one-way conduction element 222 to capacitor C220.When output voltage is not set up also, and compare
Overturn compared with circuit 223, then the voltage of capacitor C220 can it is insufficient due to output voltage and be reduced to reference voltage REF2 hereinafter,
It can then be powered again by high pressure JFET to capacitor C220.When output voltage is sufficiently high, by one-way conduction element 222 to capacitor
When C220 powers, the voltage on capacitor C220 is higher than reference voltage REF2.
It please refers to shown in Fig. 9, the power circuit is BUCK-BOOST step-up/step-down circuit, and the inductance L1 is connected to input
The low-voltage end at end, the first end of the breakover element are connected to output end, and the second end of the breakover element is connected to inductance.
The power circuit is BUCK reduction voltage circuit, the inductance connection to output end, the first end of the breakover element
It is connected to the low-voltage end of input terminal, the second end of the breakover element is connected to inductance.
In one embodiment, it please refers to shown in Figure 10, first chip further includes second source circuit 120, output
End Vo is connected to second output terminal VOUT2 by the second source circuit 120, and voltage is the second output voltage.
The second source circuit is switching mode circuit or linear circuit.It please refers to shown in Figure 11, is second source circuit
For a kind of embodiment of linear circuit, ON-OFF control circuit 122 samples the voltage of second output terminal, and according to second output terminal electricity
It presses to adjust the state of switching tube K121, makes second output terminal voltage stabilization.
It please refers to shown in Figure 12, is another embodiment that second source circuit is linear circuit, output end vo passes through NPN
Triode Q121 is connected to second output terminal VOUT2, and the base stage of NPN triode Q1 21 is connected to ginseng by Zener diode Z121
Examine ground GND.Resistance R122 is connected between the base stage and collector of NPN triode Q1 21.The voltage of second output terminal is Zener
The voltage of diode Z121 subtracts the voltage between NPN transistor base and emitter.Namely the voltage of second output terminal is not
Feedback regulation is needed, is determined by the voltage between the voltage and NPN transistor base and emitter of Zener diode Z121.
Dual chip power circuit can be used in LED illumination, please refer to shown in Figure 13, and the output end of power circuit passes through
LED light is connected to the low-voltage end of the power circuit output end, and the LED light electric current is the feedback signal, the signal
Processing unit 110 samples LED light electric current, by adjusting first switch tube control electrode so that LED light electric current is stablized.Power supply electricity
Road is by sampled output current, so that outputting current steadily, dim signal is by directly adjusting reference voltage, so that output electric current
It follows the variation of dim signal and changes.
In another embodiment, it please refers to shown in Figure 14, the output end passes through LED light and third switching tube M401 shape
At series circuit be connected to the low-voltage end of the power circuit output end, the LED light electric current is the feedback signal, institute
Signal processing unit sampling LED light electric current is stated, dim signal is by control third switch controlled pole G1 so that LED light is electric
Stream changes with the variation of dim signal, and wherein third switch M401 work is in switch state.The control electrode of third switching tube
Signal be pwm signal, when the control electrode signal of third switching tube is effective, LED light electric current stablize；When the control of third switching tube
When pole invalidating signal processed, LED light electric current is zero.By taking third switching tube M401 is NMOS as an example, the control electrode of third switching tube is believed
It number is effectively high level, the control electrode invalidating signal of third switching tube is low level.Dim signal may be any type of, than
PWM dim signal in this way, simulation dim signal etc., dim signal are to want signal processing unit 110 by conversion, obtain third and open
Close the control electrode signal of pipe.In this embodiment, third switching tube M401 is not in the first chip.First chip 100
It may include third switching tube M401, also may include third switching tube M041 and sampling resistor RS.
In another embodiment, it please refers to shown in Figure 15, the output end is opened by the 4th LED light LED4 and the 4th
The low-voltage end that the series circuit that pipe M404 is formed is connected to the power circuit output end is closed, the output end passes through the 5th
The series circuit that LED light LED5 and the 5th switching tube M405 is formed is connected to the low-voltage of the power circuit output end
End ... ..., and so on, the output end is connected by the series circuit that N LED light LED N and N switching tube M40N are formed
It is connected to the low-voltage end of the power circuit output end；The signal processing unit 110 receives dim signal, according to the light modulation
The 4th switch controlled pole of Signal Regulation is to N switch controlled pole so that from the 4th LED light to the electric current of N LED light
Change with dim signal, wherein N is the integer more than or equal to 5.In one embodiment, signal processing unit 110 samples
Total output electric current, that is, the electric current of all LED stablize output total current by control switch pipe Q210.In one kind
In embodiment, total current changes with the variation of dim signal；And in another embodiment, total current is to maintain surely
It is fixed, do not change with the variation of dim signal.Signal processing unit 110 receives dim signal, and is produced according to dim signal
The raw control signal from the 4th switching tube to N switching tube, the current ratio of each paths of LEDs lamp, with the variation of dim signal
Variation.In another embodiment, the directly or indirectly sampling and outputting voltage of signal processing unit 110, passes through control switch pipe
Q210 makes output voltage stabilization, and dim signal passes through the 4th switching tube of control to the control electrode of N switching tube, so that each road
The current ratio of LED light changes with the variation of dim signal.
Although embodiment is separately illustrated and is illustrated above, it is related to the common technology in part, in ordinary skill
Personnel apparently, can be replaced and integrate between the embodiments, be related to one of embodiment and the content recorded is not known, then
It can refer to another embodiment on the books.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (10)
1. a kind of dual chip power circuit, it is characterised in that: described including inductance, breakover element, the first chip and the second chip
Second built-in chip type has first switch tube, and the first switch tube, inductance and breakover element connect composition power supply architecture, the first core
Piece is connect with the second chip；First chip includes signal processing unit, and the signal processing unit receives feedback signal；Institute
Stating the second chip further includes first switch control circuit, and the first switch control circuit controls the conducting of the first switch tube
And shutdown；The low-voltage end of the output end of power circuit is the reference ground of the signal processing unit of first chip；The electricity
The common end of sense and the breakover element is the reference ground of the first switch control circuit of second chip；The feedback signal
Characterize output voltage, output electric current, output power, input voltage, input current or input power, the output of the power circuit
End is the first output end.
2. dual chip power circuit according to claim 1, it is characterised in that: the signal processing unit of first chip
Transmitting line is transmitted including signal；The first switch control circuit of second chip includes signal transmission receiving circuit；It is described
Signal, which transmits transmitting line, will need the signal transmitted to be converted into transmission signal, and the signal transmission receiving circuit receives the biography
Defeated signal, and it is converted into first control signal.
3. dual chip power circuit according to claim 1, it is characterised in that: first chip further includes the first power supply
Circuit, first power supply circuit are powered to the signal processing unit, and on startup, input terminal passes through the first power supply electricity
Road powers to the signal processing unit, and when output voltage is established, output end gives the letter by first power supply circuit
The power supply of number processing unit.
4. dual chip power circuit according to claim 1, it is characterised in that: first chip further includes the first power supply
Circuit, first power supply circuit are powered to the signal processing unit, on startup, the first switch tube of second chip
It is switched, when output voltage is established, output end is powered by first power supply circuit to the signal processing unit, institute
The first switch control circuit for stating the second chip receives the voltage of the signal processing unit, opens the first switch tube
Close control.
5. dual chip power circuit according to claim 1, it is characterised in that: second chip further includes the second power supply
Circuit, second power supply circuit are powered to the first switch control circuit, and on startup, input terminal is supplied by described second
Circuit is powered to the first switch control circuit, and when output voltage is established, output end passes through second power supply circuit
It powers to the first switch control circuit.
6. dual chip power circuit according to claim 1, it is characterised in that: first chip further includes second source
Circuit, for output end by the second source circuit connection to second output terminal, voltage is the second output voltage.
7. dual chip power circuit according to claim 6, it is characterised in that: the second source circuit is switching mode electricity
Road or linear circuit.
8. dual chip power circuit according to claim 1, it is characterised in that: the output end is connected to by LED light
The low-voltage end of the power circuit output end, the LED light electric current are the feedback signal, the signal processing unit sampling
LED light electric current simultaneously receives dim signal, by adjusting first switch tube control electrode so that LED light electric current is with dim signal
And change.
9. dual chip power circuit according to claim 1, it is characterised in that: the output end passes through LED light and third
The series circuit that switching tube is formed is connected to the low-voltage end of the power circuit output end, and the LED light electric current is described anti-
Feedback signal, the signal processing unit samples LED light electric current, and receives dim signal, and dim signal passes through control third switch
Pipe control electrode is so that LED light electric current changes with dim signal, and wherein the work of third switching tube is in switch state.
10. dual chip power circuit according to claim 1, it is characterised in that: the output end by the 4th LED light and
The series circuit that 4th switching tube is formed is connected to the low-voltage end of the power circuit output end, and the output end passes through the 5th
The series circuit that LED light and the 5th switching tube are formed is connected to the low-voltage end ... ... of the power circuit output end, with such
It pushes away, the output end is connected to the power circuit output end by the series circuit that N LED light and N switching tube are formed
Low-voltage end；The signal processing unit receives dim signal, adjusts the 4th switch controlled pole according to the dim signal and arrives
N switch controlled pole is so that the electric current from the 4th LED light to N LED light changes with dim signal, wherein N
For the integer more than or equal to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822256187.8U CN209593283U (en) | 2018-12-29 | 2018-12-29 | Dual chip power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822256187.8U CN209593283U (en) | 2018-12-29 | 2018-12-29 | Dual chip power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209593283U true CN209593283U (en) | 2019-11-05 |
Family
ID=68350170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822256187.8U Active CN209593283U (en) | 2018-12-29 | 2018-12-29 | Dual chip power circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN209593283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341544A (en) * | 2020-03-20 | 2020-06-26 | 杭州电子科技大学 | Fully-coupled magnetic element |
-
2018
- 2018-12-29 CN CN201822256187.8U patent/CN209593283U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341544A (en) * | 2020-03-20 | 2020-06-26 | 杭州电子科技大学 | Fully-coupled magnetic element |
| CN111341544B (en) * | 2020-03-20 | 2022-12-13 | 杭州电子科技大学 | Full-coupling magnetic element |
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