CN208508798U - Power module control circuit and power module - Google Patents
Power module control circuit and power module Download PDFInfo
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- CN208508798U CN208508798U CN201821107284.4U CN201821107284U CN208508798U CN 208508798 U CN208508798 U CN 208508798U CN 201821107284 U CN201821107284 U CN 201821107284U CN 208508798 U CN208508798 U CN 208508798U
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Abstract
The utility model provides a kind of power module control circuit and power module, is related to the technical field of power supply, which includes: switch, processor, controller, output device；Switch includes input, output end and control terminal；The connection of the input terminal of positive pole and output device, the output end of output device and the input terminal of switch connect, and the output end of switch is connect with power cathode；The first input end of processor and the output end of switch connect, for receiving current signal；The first input end of controller and the first output end of processor connect, for receiving the control signal of processor transmission；First output end of controller and the control terminal of switch connect, unlatching and disconnection for control switch.By switch, processor, controller and output device, control circuit is according to different current signals, it is possible to distinguish processing overload and short circuit.
Description
Technical field
The utility model relates to power technique fields, more particularly, to a kind of power module control circuit and power module.
Background technique
In recent years, due to the continuous popularization of the rapid development of data service and distributed power supply system, the increasing of modular power source
Width has had exceeded primary power source.Modular power source has buffer action, and strong antijamming capability carries defencive function, convenient for integrated.
With a large amount of uses of semiconductor technology, encapsulation technology and high-frequency soft switch, modular power source power density is increasing, conversion effect
Rate is higher and higher, using also increasingly simpler.Power module is the power supply unit that can directly mount on a printed circuit,
It is widely used in the communications fields such as switching equipment, access device, mobile communication, microwave communication and optical transport, router and automobile
In the fields such as electronics, aerospace.
Current power modular circuit, by electrical resistance collection electric current, controls output by the method for average value using special chip
Size of current prevents overload or short circuit.In case of overload or short circuit, it is desirable to reduce operative duty cycles, to overload and short circuit
Processing mode is identical.
The problem that cannot be distinguished from processing overload and short circuit for above-mentioned power module circuitry in the prior art, not yet mentions at present
Effective solution out.
Utility model content
It, can be in view of this, the purpose of this utility model is to provide a kind of power module control circuit and power module
It is handled differently overload and short circuit.
In a first aspect, the utility model embodiment provides a kind of power module control circuit, comprising: switch, processor,
Controller, output device；Switch includes input, output end and control terminal；The connection of the input terminal of positive pole and output device,
The output end of output device and the input terminal of switch connect, and the output end of switch is connect with power cathode；The first of processor is defeated
The output end for entering end and switch connects, for receiving current signal；First output of the first input end and processor of controller
End connection, for receiving the control signal of processor transmission；First output end of controller and the control terminal of switch connect, and are used for
The unlatching and disconnection of control switch.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, processor includes analog-digital commutator；Analog-digital commutator is used for the received current signal of the first input end of processor
It is changed into digital signal, and records duration and intensity；When intensity is greater than preset short-circuit strength threshold value, and the duration is big
When preset short circuit duration threshold value, processor, which is used to send to controller, disconnects control signal；When intensity is greater than preset mistake
Carry intensity threshold, and the duration be greater than preset overload time threshold value when, processor be used for controller forward delay interval open
Control signal.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, circuit further include: first resistor, second resistance；Positive pole and the input terminal of first resistor connect, the output of first resistor
End is connect with one end of second resistance, and the other end of second resistance is connect with power cathode；Second input terminal of processor and
The output end of one resistance connects, for receiving voltage signal；When voltage signal is less than preset first starting threshold value, processor
Control signal is disconnected for sending to controller, when voltage signal is greater than preset second starting threshold value, processor is used for
Opening control signal is sent to controller；When voltage signal is greater than preset third starting threshold value, processor is used for control
Device, which is sent, disconnects control signal, and when voltage signal is less than preset 4th starting threshold value, processor is used to send out to controller
Send opening control signal.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein circuit includes capacitor, and capacitor is in parallel with second resistance.
With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect,
In, circuit further include: input resistance and 3rd resistor；Input resistance one end is connect with positive pole, the other end and controller
The connection of third input terminal；3rd resistor is set between output switching terminal and power cathode；The second output terminal and electricity of controller
The connection of source cathode.
With reference to first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect,
In, it switchs as triode or metal-oxide-semiconductor.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect,
In, output device is transformer.
With reference to first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect,
In, the second output terminal of processor and the second input terminal of controller connect.
With reference to first aspect, the utility model embodiment provides the 8th kind of possible embodiment of first aspect,
In, comprising: the 4th input terminal of controller and the output end of switch connect, for receiving current signal.
Second aspect, the utility model embodiment also provide a kind of power module, comprising: such as first aspect and its each possibility
The power module control circuit that provides of one of embodiment, further include voltage source and/or current source, voltage source and/or electric current
Source is connect with power module control circuit.
The utility model embodiment bring it is following the utility model has the advantages that
Power module control circuit provided by the embodiment of the utility model and power module, comprising: switch, processor, control
Device processed, output device；Switch includes input, output end and control terminal；The first input end of processor and the output end of switch
Connection, for receiving current signal；The first input end of controller is used to receive the control signal of processor transmission；Controller
First output end is used for the unlatching and disconnection of control switch.Above-mentioned control circuit is according to different current signals, it is possible to distinguish place
Reason overload and short circuit.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not making the creative labor for those skilled in the art
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of circuit structure diagram of power module circuitry provided by the embodiment of the utility model；
Fig. 2 is the circuit structure diagram of another power module circuitry provided by the embodiment of the utility model；
Fig. 3 is the circuit structure diagram of another power module circuitry provided by the embodiment of the utility model；
Fig. 4 is a kind of structural schematic diagram of power module provided by the embodiment of the utility model.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not making creation
Property labour under the premise of every other embodiment obtained, fall within the protection scope of the utility model.
Power module is the power supply unit that can directly mount on a printed circuit, is widely used in switching equipment, connects
Enter the fields such as the communications fields such as equipment, mobile communication, microwave communication and optical transport, router and automotive electronics, aerospace
In.
Currently, power module circuitry passes through electrical resistance collection electric current using special chip, controlled by the method for average value defeated
Size of current out prevents overload or short circuit.In case of overload or short circuit, it is desirable to reduce operative duty cycles, to overload and short circuit
Processing mode it is identical.The circuit structure diagram of a kind of power module circuitry shown in Figure 1, as shown in Figure 1, the power module
Circuit include: IC (Integrated Circuit, integrated circuit), transformer T1, resistance R1, the enhanced metal-oxide-semiconductor Q1 of N-channel,
Resistance R2.
The input terminal of transformer T1 primary coil is connect with positive pole, and output end is connect with the drain electrode of metal-oxide-semiconductor Q1, MOS
The source electrode of pipe Q1 is connect with one end of resistance R2, and the other end of resistance R2 connects to power supply, the drain electrode and the input of IC of metal-oxide-semiconductor Q1
A1 connection is held, is connect with the output end a2 of IC with the grid of metal-oxide-semiconductor Q1, positive pole is connect with one end of resistance R1, resistance R1
The other end and IC input terminal a3 connection, the output end a4 of IC connect with power cathode, the signal of the output end a2 output of IC
For square-wave signal.
Current signal is flowed out from positive pole, flows into power cathode after transformer T1, metal-oxide-semiconductor Q1, resistance R2.MOS
The current signal of pipe Q1 drain electrode outflow, the input terminal a1 through IC flow into IC, and when above-mentioned current signal is greater than preset threshold, IC's is defeated
Outlet a2 controls the grid of metal-oxide-semiconductor Q1, reduces operative duty cycles, achievees the purpose that reduce electric current.Preset threshold can be set manually
It sets, generally 0.5-5A.
As long as above-mentioned power module circuitry current signal is greater than preset threshold, operative duty cycles will be reduced, cannot be distinguished from
Processing overload and short circuit.
Based on this, the purpose of this utility model is to provide a kind of power module control circuit and power modules, according to not
Same current signal, it is possible to distinguish processing overload and short circuit.For convenient for understanding the present embodiment, first to the utility model
A kind of power module control circuit disclosed in embodiment describes in detail.
Embodiment one:
The utility model embodiment provides a kind of power module control circuit, comprising: switch, processor, controller, defeated
Device out；Switch includes input, output end and control terminal；The connection of the input terminal of positive pole and output device, output device
Output end and the input terminal of switch connect, the output end of switch connect with power cathode；The first input end of processor with open
The output end of pass connects, for receiving current signal；The first input end of controller and the first output end of processor connect, and use
In the control signal for receiving processor transmission；First output end of controller and the control terminal of switch connect, and are used for control switch
Unlatching and disconnection.
The circuit structure diagram of another power module circuitry shown in Figure 2, as shown in Figure 2, comprising: processor, control
Device, switch, output device, input resistance R and resistance R1 processed switch as the enhanced metal-oxide-semiconductor of N-channel, and output device is transformer
T1；The input terminal of transformer T1 primary coil is connect with positive pole, and output end is connect with the drain electrode of metal-oxide-semiconductor Q1.Metal-oxide-semiconductor Q1's
Source electrode is connect with one end of resistance R1, and the other end of resistance R1 is connect with power cathode.The grid of metal-oxide-semiconductor Q1 and controller it is defeated
Outlet a1 connection, the input terminal b1 connection of the source electrode and processor of metal-oxide-semiconductor Q1, output end b2, b3 of processor respectively with control
Input terminal a2, a3 of device are connected.One end of input resistance R is connect with positive pole, and the input terminal a4 of the other end and controller connects
It connects.The input terminal a5 of controller is connect with the source electrode of metal-oxide-semiconductor Q1, and output end a6 is connect with power cathode, and processor is to be
CPU (Central Processing Unit, central processing unit) or ECU (electronic control unit, Electronic
Control Unit), the model of CPU can be STM8S003；Controller is generally IC.
Current signal is flowed out from positive pole, flows into power cathode after transformer T1, metal-oxide-semiconductor Q1, resistance R1.MOS
The current signal of pipe Q1 drain electrode outflow, the input terminal b1 through processor flow into processor.Processor is according to the current signal of inflow
Control signal is sent to controller, the unlatching and disconnection of metal-oxide-semiconductor Q1 are controlled by controller.Processor passes through output end b3 to control
Device processed provides supply voltage, sends control signal to controller by output end b2.
Foregoing circuit provided by the embodiment of the utility model, comprising: switch, processor, controller, output device；Switch
Including input, output end and control terminal；The first input end of processor and the output end of switch connect, for receiving electric current letter
Number；The first input end of controller is used to receive the control signal of processor transmission；First output end of controller is for controlling
It switches on and disconnects.Above-mentioned control circuit is according to different current signals, it is possible to distinguish processing overload and short circuit.
During processor handles current signal, need to convert analog signal to digital signal, therefore, above-mentioned electricity
Road further include: processor includes analog-digital commutator；Analog-digital commutator is used for the received electricity of the first input end of processor
Stream signal is changed into digital signal, and records duration and intensity；
When intensity is greater than preset short-circuit strength threshold value, and the duration is greater than preset short circuit duration threshold value, processing
Device, which is used to send to controller, disconnects control signal；
Short-circuit strength threshold value and short circuit duration threshold value can be with manual settings, in general, and short-circuit strength threshold value is 10-
100A, short circuit duration threshold value are 1-3s, are greater than short circuit duration threshold greater than short-circuit strength threshold value and duration as long as meeting intensity
Value is considered as circuit and short circuit problem occurs, needs to disconnect switch.
When intensity is greater than preset overload intensity threshold, and the duration is greater than preset overload time threshold value, processing
Device is used for controller forward delay interval opening control signal.
It overloads intensity threshold and overload time threshold value can be with manual setting, in general, overload intensity threshold is less than short
Road intensity threshold, generally 0.5-5A；Overload time threshold value is greater than short-circuit strength threshold value, generally 4-10s, as long as meeting strong
Degree is greater than overload intensity threshold and the duration is greater than overload time threshold value, is considered as circuit and overload problem occurs, need first to break
It is then turned on after switch a period of time, turn-off time can be with manual setting, generally 1-10min.
Foregoing circuit provided by the embodiment of the utility model can be with according to the intensity and duration for receiving current signal
It is handled differently overload and short circuit.
If processor is in the state that can not be worked, by controller, overload and short circuit processing also may be implemented, referring to
The circuit structure diagram of another kind power module circuitry shown in Fig. 2, as shown in Fig. 2, foregoing circuit further include: input resistance R's
One end is connect with positive pole, the input terminal a4 connection of the other end and controller.The source of the input terminal a5 and metal-oxide-semiconductor Q1 of controller
Pole connection.
It is controller power supply by input resistance R, current signal flows into controller by input terminal a5.When above-mentioned electric current is believed
Number be greater than preset threshold, controller output end a1 control metal-oxide-semiconductor Q1 grid, reduce operative duty cycles, reach reduction electric current
Purpose.Preset threshold can be with manual setting, generally 0.5-5A.
Foregoing circuit provided by the embodiment of the utility model is connect by one end of input resistance R with positive pole, another
End is connect with the input terminal a4 of controller.The input terminal a5 of controller is connect with the source electrode of metal-oxide-semiconductor Q1, and realizing can not in processor
Under conditions of work, overload and short circuit can still be handled by controller.
By bleeder mechanism, the voltage of power module circuitry can be controlled, another power supply shown in Figure 3
The circuit structure diagram of modular circuit, as shown in figure 3, foregoing circuit includes: processor, controller, switch, output device, input
Resistance R, resistance R1, resistance R2, resistance R3, capacitor C switch as the enhanced metal-oxide-semiconductor of N-channel, and output device is transformer T1；Become
The input terminal of depressor T1 primary coil is connect with positive pole, and output end is connect with the drain electrode of metal-oxide-semiconductor Q1.The source electrode of metal-oxide-semiconductor Q1
It is connect with one end of resistance R3, the other end of resistance R3 is connect with power cathode.The grid of metal-oxide-semiconductor Q1 and the output end of controller
A1 connection, the input terminal b1 connection of the source electrode and processor of metal-oxide-semiconductor Q1, output end b2, b3 of processor respectively with controller
Input terminal a2, a3 connection.One end of input resistance R is connect with positive pole, the input terminal a4 connection of the other end and controller.Control
The input terminal a5 of device processed is connect with the source electrode of metal-oxide-semiconductor Q1, and output end a6 is connect with power cathode, and capacitor C is in parallel with resistance R2, electricity
The anode for holding C is connected with resistance R1, and the cathode of capacitor C is connect with power cathode, and the other end of resistance R1 is connect with positive pole,
The anode of capacitor C is connect with processor input terminal b4.
By processor input terminal b4, can the voltage signal after resistance R1 and resistance R2 partial pressure be output to processor
In, processor sends control signal according to voltage signal, to controller, controls the unlatching and disconnection of metal-oxide-semiconductor T1.
When voltage signal is less than preset first starting threshold value, processor, which is used to send to controller, disconnects control letter
Number, when voltage signal is greater than preset second starting threshold value, processor is used to send opening control signal to controller；
When voltage signal is greater than preset third starting threshold value, processor, which is used to send to controller, disconnects control letter
Number, when voltage signal is less than preset 4th starting threshold value, processor is used to send opening control signal to controller.
First starting threshold value, second starting threshold value, third starting threshold value and the 4th starting threshold value can manual setting, from
It is small to arrive greatly are as follows: the first starting threshold value, the second starting threshold value, third starting threshold value, the 4th start threshold value；First starting threshold value is general
For 5-15V, the second starting threshold value is generally 1-2V bigger than the first starting threshold value；4th starting threshold value is generally 15-25V, and third opens
Dynamic threshold value is generally 1-2V bigger than the 4th starting threshold value.It is arranged in this way, it is ensured that if power module is in operating on low voltage
Range, i.e. voltage first disconnect switch less than the first starting threshold value, reopen out after voltage is greater than the second starting threshold value
It closes；When power module is in high-pressure work range, i.e. voltage is greater than third starting threshold value, switch is first disconnected, until voltage is less than
Switch is reopened after 4th starting threshold value, adjusts the working range of voltage.
Capacitor C guarantees the stability and accuracy of circuit for filtering alternating current clutter
Foregoing circuit provided by the embodiment of the utility model is sent out voltage signal after resistance R1 and resistance R2 partial pressure
It is sent to processor, according to the size of voltage signal, the unlatching and disconnection of control switch adjust the working range of voltage.
A kind of power module control circuit provided in this embodiment, comprising: processor, controller, switch, output device,
Input resistance R, resistance R1, resistance R2, resistance R3, capacitor C switch as the enhanced metal-oxide-semiconductor of N-channel, and output device is transformer
T1；The input terminal of transformer T1 primary coil is connect with positive pole, and output end is connect with the drain electrode of metal-oxide-semiconductor Q1.Metal-oxide-semiconductor Q1's
Source electrode is connect with one end of resistance R3, and the other end of resistance R3 is connect with power cathode.The grid of metal-oxide-semiconductor Q1 and controller it is defeated
Outlet a1 connection, the input terminal b1 connection of the source electrode and processor of metal-oxide-semiconductor Q1, output end b2, b3 of processor respectively with control
Input terminal a2, a3 of device are connected.One end of input resistance R is connect with positive pole, and the input terminal a4 of the other end and controller connects
It connects.The input terminal a5 of controller is connect with the source electrode of metal-oxide-semiconductor Q1, and output end a6 is connect with power cathode, and capacitor C and resistance R2 are simultaneously
The anode of connection, capacitor C is connected with resistance R1, and the cathode of capacitor C is connect with power cathode, the other end and positive pole of resistance R1
The anode of connection, capacitor C is connect with processor input terminal b4.Processor includes analog-digital commutator, is being located by input resistance R
Reason device is powered under conditions of can not working for controller, sends processor for voltage signal by divider resistance.Above-mentioned control
Circuit is according to different current signals, it is possible to distinguish processing overload and short circuit make the instruction that delay is opened to overload, to short circuit
Open command is made, under conditions of processor can not work, overload and short circuit can still be handled by controller,
Regulation can also be made to voltage signal, adjust the working range of voltage.
Embodiment two:
The utility model embodiment 2 provides a kind of power module, a kind of structural representation of power module shown in Figure 4
Figure, including such as power module control circuit provided by the above embodiment, further includes voltage source and/or current source, voltage source and/or
Current source is connect with power module control circuit.
Voltage source and/or current source are for outwardly providing stable voltage and or current.
Power module control circuit is used to detect the voltage and or current provided, and overload, short circuit are made and being handled differently,
And adjust the working range of voltage.
It is apparent to those skilled in the art that for convenience and simplicity of description, the power supply of foregoing description
The specific work process of module, can be with reference to the corresponding process in previous embodiment, and details are not described herein.
Power module provided by the embodiment of the utility model has with power module control circuit provided by the above embodiment
Identical technical characteristic reaches identical technical effect so also can solve identical technical problem.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
Finally, it should be noted that above embodiments, only specific embodiment of the present utility model, to illustrate that this is practical
Novel technical solution, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned implementation
The utility model is described in detail in example, it should be understood by those skilled in the art that: any skill for being familiar with the art
Art personnel within the technical scope disclosed by the utility model, can still carry out technical solution documented by previous embodiment
Modification can readily occur in variation or equivalent replacement of some of the technical features；And these are modified, change or replace
It changes, the spirit and scope for the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution should all cover
It is within the protection scope of the utility model.Therefore, the protection scope of the utility model should be with scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of power module control circuit characterized by comprising switch, processor, controller, output device；
The switch includes input, output end and control terminal；
Positive pole is connect with the input terminal of the output device, and the output end of the output device is described defeated with the switch
Enter end connection, the output end of the switch is connect with the power cathode；The first input end of the processor with it is described
The output end connection of switch, for receiving current signal；
The first input end of the controller is connect with the first output end of the processor, is sent for receiving the processor
Control signal；
First output end of the controller is connect with the control terminal of the switch, the unlatching and disconnection for control switch.
2. circuit according to claim 1, which is characterized in that the processor includes analog-digital commutator；
The analog-digital commutator is used to the received current signal of the first input end of the processor being changed into number
Signal, and record duration and intensity；
When the intensity is greater than preset short-circuit strength threshold value, and the duration is greater than preset short circuit duration threshold value,
The processor, which is used to send to the controller, disconnects control signal；
When the intensity is greater than preset overload intensity threshold, and the duration is greater than preset overload time threshold value,
The processor is used for the controller forward delay interval opening control signal.
3. circuit according to claim 1, which is characterized in that the circuit further include: first resistor, second resistance；
The positive pole is connect with the input terminal of the first resistor, the output end of the first resistor and the second resistance
One end connection, the other end of the second resistance connect with the power cathode；Second input terminal of the processor and institute
The output end connection for stating first resistor, for receiving voltage signal；
When the voltage signal is less than preset first starting threshold value, the processor is used to send to the controller and disconnect
Signal is controlled, when the voltage signal is greater than preset second starting threshold value, the processor is used for the controller
Send opening control signal；
When the voltage signal is greater than preset third starting threshold value, the processor is used to send to the controller and disconnect
Signal is controlled, when the voltage signal is less than preset 4th starting threshold value, the processor is used for the controller
Send opening control signal.
4. circuit according to claim 3, which is characterized in that the circuit includes capacitor, the capacitor and described second
Resistor coupled in parallel.
5. circuit according to claim 1, which is characterized in that the circuit further include: input resistance and 3rd resistor；
Described input resistance one end is connect with the positive pole, and the other end is connect with the third input terminal of the controller；
The 3rd resistor is set between the output switching terminal and the power cathode；
The second output terminal of the controller is connect with the power cathode.
6. circuit according to claim 1, which is characterized in that the switch is triode or metal-oxide-semiconductor.
7. circuit according to claim 1, which is characterized in that the output device is transformer.
8. circuit according to claim 1, which is characterized in that the second output terminal of the processor and the controller
The connection of second input terminal.
9. circuit according to claim 1 characterized by comprising the 4th input terminal of the controller is opened with described
The output end connection closed, for receiving the current signal.
10. a kind of power module, which is characterized in that including the described in any item power module control circuits of claim 1-9, also
Including voltage source and/or current source, the voltage source and/or the current source are connect with the power module control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107284.4U CN208508798U (en) | 2018-07-12 | 2018-07-12 | Power module control circuit and power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107284.4U CN208508798U (en) | 2018-07-12 | 2018-07-12 | Power module control circuit and power module |
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| Publication Number | Publication Date |
|---|---|
| CN208508798U true CN208508798U (en) | 2019-02-15 |
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|---|---|---|---|
| CN201821107284.4U Active CN208508798U (en) | 2018-07-12 | 2018-07-12 | Power module control circuit and power module |
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| CN (1) | CN208508798U (en) |
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2018
- 2018-07-12 CN CN201821107284.4U patent/CN208508798U/en active Active
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