CN209001839U - Switching Power Supply - Google Patents
Switching Power Supply Download PDFInfo
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- CN209001839U CN209001839U CN201821993583.2U CN201821993583U CN209001839U CN 209001839 U CN209001839 U CN 209001839U CN 201821993583 U CN201821993583 U CN 201821993583U CN 209001839 U CN209001839 U CN 209001839U
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Abstract
The embodiment of the present disclosure provides a kind of Switching Power Supply.The Switching Power Supply, comprising: transformer, control module, current conversion unit and current sampling unit；Wherein, the input terminal of current conversion unit is connect with transformer, and the output end of current conversion unit is connect with current sampling unit, and current conversion unit is for output after being converted the electric current of input current converting unit to current sampling unit；The input current of current conversion unit is greater than the output electric current of current conversion unit；Current sampling unit is also connect with control module, the electric current that the current feedback for the electric current that current conversion unit exports to be detected, and will test is detected to control module, control module according to current sampling unit, obtains the output electric current of Switching Power Supply.Loss when current detecting can be reduced in the embodiment of the present disclosure, improve the efficiency of Switching Power Supply.
Description
Technical field
The embodiment of the present disclosure is related to electronic technology field more particularly to a kind of Switching Power Supply.
Background technique
Power supply unit of the Switching Power Supply as electronic product, other than electrical performance indexes will be met the requirements, the guarantor of its own
Shield measure is also extremely important, such as over-voltage, overcurrent, overheating protection.Once electronic product breaks down, short circuit occurs for such as load
When, then Switching Power Supply cracking must detect overcurrent and close its output, just can guarantee that power supply and load are not burned out, no
Phenomena such as then may cause the badly damaged of electronic product, or even causing electric shock and the fire of operator.In addition, for some
Similar to the application of battery charger or LED power, it is required that the output of power supply is constant current.Therefore, Switching Power Supply needs essence
True detects that the numerical values recited of output electric current makes its control switch power supply for feeding back to the control chip of Switching Power Supply
Export electric current.
In the related technology, the output electric current measure scheme of Switching Power Supply is typically employed in the outlet side series connection of Switching Power Supply
Electric current is converted into voltage to obtain output electric current by accurate sampling resistor.In above scheme, resistance itself can generate heat, defeated
When electric current is larger out, loss is larger, seriously affects the efficiency of Switching Power Supply.
Utility model content
The embodiment of the present disclosure provides a kind of Switching Power Supply, is detected with realizing to the output electric current of Switching Power Supply, and
Loss is smaller, and the efficiency of Switching Power Supply is higher.
The embodiment of the present disclosure provides a kind of Switching Power Supply, comprising:
Transformer, control module, current conversion unit and current sampling unit；
Wherein, the input terminal of the current conversion unit is connect with the transformer, the output of the current conversion unit
End is connect with the current sampling unit, and the electric current that the current conversion unit is used to input the current conversion unit carries out
It exports after conversion to the current sampling unit；The input current of the current conversion unit is greater than the current conversion unit
Export electric current；
The current sampling unit is also connect with the control module, the electric current for exporting to the current conversion unit
The current feedback for being detected, and being will test gives the control module；
The control module is used for the electric current detected according to the current sampling unit, obtains the defeated of the Switching Power Supply
Electric current out.
It in above scheme, realizes the output electric current to Switching Power Supply and detects, since current conversion unit will input
Electric current be converted to the output of lesser electric current, loss when current detecting can be reduced, improve the efficiency of Switching Power Supply.
In one embodiment of the present disclosure, the current conversion unit includes current transformer；The current transformer
Primary side connect the primary side of the transformer；
The secondary side of the current transformer connects the current sampling unit.
In above scheme, the input current of transformer is converted using ordinary electric current mutual-inductor realization, and pass through electricity
Stream sampling unit is detected, and determines that the output electric current of Switching Power Supply, escapable cost are simultaneously improved eventually by control module
Power-efficient.
In one embodiment of the present disclosure, further includes:
Resonance circuit；Wherein, one end of the primary side of the current transformer connects the primary side of the transformer, the electricity
The other end of the primary side of current transformer connects the resonance circuit.
In one embodiment of the present disclosure, the current conversion unit includes current transformer；The current transformer
Primary side connect the secondary side of the transformer；
The secondary side of the current transformer connects the current sampling unit.
In above scheme, the output electric current of transformer is converted using ordinary electric current mutual-inductor realization, and pass through electricity
Stream sampling unit is detected, and determines that the output electric current of Switching Power Supply, escapable cost are simultaneously improved eventually by control module
Power-efficient.
In one embodiment of the present disclosure, one end of the primary side of the current transformer connects the pair of the transformer
Side, the other end of the primary side of the current transformer connect the first rectification unit, and first rectification unit is used for described
The electric current of transformer output is rectified.
In one embodiment of the present disclosure, one end of the primary side of the current transformer connects the second rectification unit
The other end of output end, the primary side of the current transformer connects the first filter unit；The input of second rectification unit
End is connect with the secondary side of the transformer；The electric current that second rectification unit is used to export the transformer rectifies,
First filter unit is for being filtered the electric current after the rectification.
In one embodiment of the present disclosure, one end of the primary side of the current transformer connects the pair of the transformer
Side, the other end ground connection of the primary side of the current transformer.
In above scheme, the particular circuit configurations of the secondary side of transformer are set for current transformer.
In one embodiment of the present disclosure, is additionally provided between the current conversion unit and the current sampling unit
Three rectification units, the electric current that the third rectification unit is used to export the current conversion unit rectify.
In one embodiment of the present disclosure, the third rectification unit is full-wave rectifying circuit or half-wave rectifying circuit.
In one embodiment of the present disclosure, the second filter is additionally provided between the current sampling unit and the control module
Wave unit；The electric current that second filter unit is used to export the current sampling unit is filtered.
In one embodiment of the present disclosure, second filter unit, comprising:
First resistor, second resistance, first capacitor and the second capacitor；
Wherein, the first end of the first resistor is connect with the current sampling unit, the second end of the first resistor
It is connect respectively with the first end of the second resistance and the first capacitor, the other end of the second resistance and second electricity
One end of appearance connects, and the first capacitor is connected with the other end of second capacitor.
In one embodiment of the present disclosure, the current sampling unit includes: sampling resistor.
The Switching Power Supply that the embodiment of the present disclosure provides, comprising: transformer, control module, current conversion unit and electric current take
Sample unit；Wherein, the input terminal of the current conversion unit is connect with the transformer, the output end of the current conversion unit
It is connect with the current sampling unit, the current conversion unit is for being turned the electric current for inputting the current conversion unit
It exports after changing to the current sampling unit；The input current of the current conversion unit is greater than the defeated of the current conversion unit
Electric current out；The current sampling unit is also connect with the control module, the electric current for exporting to the current conversion unit
The current feedback for being detected, and being will test gives the control module；The control module is used for according to the current sampling
The electric current that unit detects obtains the output electric current of the Switching Power Supply, realizes the output electric current to Switching Power Supply and examines
It surveys, is exported since the electric current of input is converted to lesser electric current by current conversion unit, loss when current detecting can be reduced, mentioned
The efficiency of high Switching Power Supply.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.
Fig. 1 is the structural schematic diagram for one embodiment of Switching Power Supply that the disclosure provides；
Fig. 2 is the structural schematic diagram for another embodiment of Switching Power Supply that the disclosure provides；
Fig. 3 is the structural schematic diagram for the another embodiment of Switching Power Supply that the disclosure provides；
Fig. 4 is the structural schematic diagram for the another embodiment of Switching Power Supply that the disclosure provides；
Fig. 5 is the structural schematic diagram for the another embodiment of Switching Power Supply that the disclosure provides；
Fig. 6 is the structural schematic diagram for the another embodiment of Switching Power Supply that the disclosure provides；
Fig. 7 is the structural schematic diagram for the another embodiment of Switching Power Supply that the disclosure provides.
Description of symbols:
T, transformer；D1, rectifier diode；
D2, rectifier diode；D3, rectifier diode；
C1, capacitor；C2, first capacitor；
C3, the second capacitor；L, current transformer；
Q1, switching tube；Q2, switching tube；
R1, sampling resistor；R2, first resistor；
R3, second resistance.
Through the above attached drawings, it has been shown that the specific embodiment of the disclosure will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of this disclosure concept by any means with verbal description, but is by referring to specific embodiments
Those skilled in the art illustrate the concept of the disclosure.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
The specification and claims of the disclosure and the (if present)s such as term " first " in above-mentioned attached drawing, " second "
It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the number used in this way
According to being interchangeable under appropriate circumstances, so as to embodiment of the disclosure described herein for example can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing series of steps or device are not necessarily limited to clearly
Those of list to Chu step or device, but may include be not clearly listed or for these process, methods, product or
The intrinsic other steps of equipment or device.
Application scenarios involved in the disclosure are introduced first:
In general, Switching Power Supply needs to detect the numerical values recited of output electric current, for feeding back to the control core of Switching Power Supply
Piece makes the output electric current of its control switch power supply, realizes the overcurrent protection to Switching Power Supply, or realize the output electric current to power supply
The control of size.
The Switching Power Supply that the embodiment of the present disclosure provides, may be implemented the output electric current to Switching Power Supply and detects, can subtract
Loss when low current detects, improves the efficiency of Switching Power Supply.
It is described in detail below with technical solution of the specific embodiment to the disclosure.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the structural schematic diagram for one embodiment of Switching Power Supply that the disclosure provides.The Switching Power Supply of the present embodiment, packet
It includes:
Transformer, control module, current conversion unit and current sampling unit；
Wherein, the input terminal of the current conversion unit is connect with the transformer, the output of the current conversion unit
End is connect with the current sampling unit, and the electric current that the current conversion unit is used to input the current conversion unit carries out
It exports after conversion to the current sampling unit；The input current of the current conversion unit is greater than the current conversion unit
Export electric current；
The current sampling unit is also connect with the control module, the electric current for exporting to the current conversion unit
The current feedback for being detected, and being will test gives the control module；
The control module is used for the electric current detected according to the current sampling unit, obtains the defeated of the Switching Power Supply
Electric current out.
It is converted specifically, as shown in Figure 1, the transformer T connection current conversion unit of Switching Power Supply, in Fig. 1 with electric current single
Member is illustrated for being connected to the secondary side of transformer, meanwhile, current conversion unit also can be set at A or B.
Current conversion unit converts the electric current of the secondary side of transformer, is converted to more lesser than the electric current of secondary side
Electric current is detected by the electric current that current sampling unit exports current conversion unit, obtains current conversion unit output
Electric current, wherein be used as testing result after average value filtering being carried out to the electric current repeatedly sampled.
It, can be big by the electric current of input current converting unit by the conversion parameter of current conversion unit, such as conversion proportion
It is small to calculate to get the output electric current of Switching Power Supply has been arrived to the electric current of transformer secondary side.
Wherein, in Fig. 1, D1 is rectifier diode, and C1 is energy storage filter capacitor, the primary side side connection switch pipe of transformer,
The electric current of input transformer is controlled by the on-off of switching tube, the on-off of switching tube can be controlled by control module.Its
In, one end of capacitor C1 is grounded (GND).
It should be noted that D1 and C1 are only an example, it in practical applications, can also be using the circuit of other deformations
Structure realizes the function of the part.
As shown in Fig. 2, the transformer of Switching Power Supply connects current conversion unit, it is connected in Fig. 2 with current conversion unit
It is illustrated for the primary side side of transformer.
Current conversion unit converts the electric current of the primary side side of transformer, is converted to more lesser than the electric current of primary side side
Electric current is detected by the electric current that current sampling unit exports current conversion unit, obtains current conversion unit output
Electric current, wherein be used as testing result after average value filtering being carried out to the electric current repeatedly sampled.
It, can be big by the electric current of input current converting unit by the conversion parameter of current conversion unit, such as conversion proportion
It is small to calculate to get the electric current of transformer primary avris is arrived.
Further, the size of the output electric current of the secondary side of transformer can be calculated by the no-load voltage ratio of transformer.The output
The size of electric current further comprises a transformer magnetizing current.Therefore subtracting transformer magnetizing current obtains final Switching Power Supply
Output electric current.
Wherein, the size of transformer magnetizing current can by the working frequency of transformer and the size of magnetizing inductance amount and
Primary voltage of transformer is calculated.
The working frequency and magnetizing inductance amount of transformer can be obtained by the element known parameters of the transformer, transformer primary
Polygonal voltage is preset, or can be obtained by external application table measurement.
Wherein, 1 port of transformer primary avris can connect switching tube.Current conversion unit also can connect in 1 port.
The Switching Power Supply of the present embodiment, comprising: transformer, control module, current conversion unit and current sampling unit；Its
In, the input terminal of the current conversion unit is connect with the transformer, the output end of the current conversion unit and the electricity
Sampling unit connection is flowed, the current conversion unit after being converted the electric current for inputting the current conversion unit for exporting
To the current sampling unit；The input current of the current conversion unit is greater than the output electric current of the current conversion unit；
The current sampling unit is also connect with the control module, and the electric current for exporting to the current conversion unit is examined
It surveys, and the current feedback that will test gives the control module；The control module is used to be examined according to the current sampling unit
The electric current measured obtains the output electric current of the Switching Power Supply, realizes the output electric current to Switching Power Supply and detects, due to
The electric current of input is converted to lesser electric current and exported by current conversion unit, can reduce loss when current detecting, improves switch
The efficiency of power supply.
On the basis of the above embodiments, optionally, in conjunction with Fig. 3-Fig. 4, transformer is connected to current conversion unit
The implementation of primary side side is described in detail.If current conversion unit includes current transformer L；The then specific connection side of circuit
Formula is as follows:
The primary side of the primary side connection transformer T of current transformer L；
The secondary side of current transformer L connects current sampling unit.
Specifically, as shown in figure 3, the primary side of the primary side connection transformer of current transformer L, to connect 2 ports in Fig. 3
For be illustrated, also can connect in other embodiments in 1 port.
Primary side high current is converted into secondary side low current to measure according to electromagnetic induction principle by current transformer
Instrument, therefore the thermal losses that current sampling unit generates is smaller, so that the efficiency of Switching Power Supply is higher.
Wherein, in other embodiments, it as shown in figure 4,1 port connection switch pipe of the primary side side of transformer, including opens
Pipe Q1 and switching tube Q2 is closed, optionally, the primary side of one end connection transformer T of the primary side of current transformer L, current transformer
Primary side the other end connect resonance circuit.
Wherein, the first end of switching tube Q1 connects VBUS, and the second end connection flash driving circuit output of switching tube Q1 is drawn
The second end of the first end of the third end connection switch pipe Q2 of foot DRVH, switching tube Q1, switching tube Q2 connects low side driving circuit
The second end of output pin DRVL, switching tube Q2 are grounded.
In Fig. 4, one end of the 5 ports connection rectifier diode D2 of the secondary side of transformer, rectifier diode D2's is another
End is connect with one end of rectifier diode D1.
In a kind of specific embodiment, resonance circuit can be realized by two concatenated capacitors.
In the present embodiment, the input current of transformer is converted using ordinary electric current mutual-inductor realization, and pass through electricity
Stream sampling unit is detected, and determines that the output electric current of Switching Power Supply, escapable cost are simultaneously improved eventually by control module
Power-efficient.
On the basis of the above embodiments, optionally, in conjunction with Fig. 5, the secondary side of transformer is connected to current conversion unit
The implementation of side is described in detail.If current conversion unit includes current transformer L；Then the specific connection type of circuit is such as
Under:
The secondary side of the primary side connection transformer of current transformer L；
The secondary side of current transformer connects current sampling unit.
As a kind of enforceable mode, as shown in figure 5, the pair of one end connection transformer of the primary side of current transformer
Side, the other end ground connection of the primary side of current transformer.
Specifically, as shown in figure 5, the secondary side of the primary side connection transformer of current transformer L, to connect 4 ports in Fig. 5
For be illustrated, also can connect at 3 ports, i.e. A in other embodiments or output end (the i.e. B of rectifier diode D1
Place), it is not shown in the figure.
Primary side high current is converted into secondary side low current to measure according to electromagnetic induction principle by current transformer
Instrument, therefore the thermal losses that current sampling unit generates is smaller, so that the efficiency of Switching Power Supply is higher.
In Fig. 4-Fig. 5, current sampling unit may include a sampling resistor R1.
Current sampling unit exports ICS signal to control module.ICS in Fig. 4-Fig. 5 is for Controlled in Current Mode and Based
Current information integrates pin, connects associated control modules.
As another enforceable mode, the secondary side of one end connection transformer of the primary side of current transformer, electric current
The other end of the primary side of mutual inductor connects the first rectification unit, and the electric current that the first rectification unit is used to export transformer carries out
Rectification.
Specifically, the secondary side of one end connection transformer of the primary side of current transformer, the primary side of current transformer
The other end can connect into Fig. 5 the input terminal of rectifier diode D1, i.e. at A in Fig. 5.
First rectification unit in addition to the rectifier diode D1 in Fig. 5, realized by the circuit structure that can also be deformed using other,
The embodiment of the present disclosure does not limit this.
As another enforceable mode, one end of the primary side of current transformer connects the output of the second rectification unit
The other end at end, the primary side of current transformer connects the first filter unit；The input terminal of second rectification unit and transformer
Secondary side connection；The electric current that second rectification unit is used to export transformer rectifies, after the first filter unit is used for rectification
Electric current be filtered.
Specifically, one end of the primary side of current transformer connects the output end of the second rectification unit, current transformer
The rectification that the other end the first filter unit of connection of primary side, i.e. current transformer are connected to the transformer secondary side of Switching Power Supply
Between unit and filter unit, i.e. at B in Fig. 5.
Second rectification unit in addition to the rectifier diode D1 in Fig. 5, realized by the circuit structure that can also be deformed using other,
First filter unit can also be realized, the embodiment of the present disclosure pair in addition to the capacitor C1 in Fig. 5 using the circuit structure of other deformations
This is not limited.
In the present embodiment, the output electric current of transformer is converted using ordinary electric current mutual-inductor realization, and pass through electricity
Stream sampling unit is detected, and determines that the output electric current of Switching Power Supply, escapable cost are simultaneously improved eventually by control module
Power-efficient.
On the basis of the above embodiments, optionally, as shown in Figure 6, Figure 7, current conversion unit and current sampling unit
Between be additionally provided with third rectification unit, the electric current that third rectification unit is used to export current conversion unit rectifies.
Specifically, being the secondary side that transformer is arranged in current transformer shown in Fig. 6, third rectification unit can pass through
One rectifier diode D3 realization, i.e. half-wave rectifying circuit.
Shown in fig. 7 is the primary side side that transformer is arranged in current transformer, and third rectification unit can be complete by one
Wave rectification circuit.
The third rectification unit in Fig. 7 is realized by the full-wave rectifying circuit of four diode compositions.
Wherein, third rectification unit be full-wave rectifying circuit or half-wave rectifying circuit, the embodiment of the present disclosure to this and it is unlimited
It is fixed.
Further, the second filter unit is additionally provided between the current sampling unit and the control module；Described
The electric current that two filter units are used to export the current sampling unit is filtered.
Wherein, as a specific implementation manner, second filter unit, comprising:
First resistor R2, second resistance R3, first capacitor C2 and the second capacitor C3；
Wherein, the first end of first resistor R2 is connect with current sampling unit, and the second end of first resistor R2 is respectively with
Two resistance R3 are connected with the first end of first capacitor C2, and the other end of second resistance R3 is connect with one end of the second capacitor C3, the
The connection of the other end of one capacitor C2 and the second capacitor C3.
It should be noted that the second filter unit can also using other structures realize, the embodiment of the present disclosure to this not
It limits.
In the present embodiment, rectification unit is set between current conversion unit and current sampling unit, in current sampling list
Filter unit is arranged in first output end, to realize rectification and filtering to electric current.
Those skilled in the art will readily occur to its of the disclosure after considering specification and practicing disclosure disclosed herein
Its embodiment.The disclosure is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following
Claims are pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by appended claims
System.
Claims (12)
1. a kind of Switching Power Supply characterized by comprising
Transformer, control module, current conversion unit and current sampling unit；
Wherein, the input terminal of the current conversion unit is connect with the transformer, the output end of the current conversion unit with
The current sampling unit connection, the current conversion unit is for converting the electric current for inputting the current conversion unit
After export to the current sampling unit；The input current of the current conversion unit is greater than the output of the current conversion unit
Electric current；
The current sampling unit is also connect with the control module, and the electric current for exporting to the current conversion unit carries out
Detection, and the current feedback that will test gives the control module；
The control module is used for the electric current detected according to the current sampling unit, obtains the output electricity of the Switching Power Supply
Stream.
2. Switching Power Supply according to claim 1, which is characterized in that the current conversion unit includes current transformer；
The primary side of the current transformer connects the primary side of the transformer；
The secondary side of the current transformer connects the current sampling unit.
3. Switching Power Supply according to claim 2, which is characterized in that further include:
Resonance circuit；Wherein, one end of the primary side of the current transformer connects the primary side of the transformer, and the electric current is mutual
The other end of the primary side of sensor connects the resonance circuit.
4. Switching Power Supply according to claim 1, which is characterized in that the current conversion unit includes current transformer；
The primary side of the current transformer connects the secondary side of the transformer；
The secondary side of the current transformer connects the current sampling unit.
5. Switching Power Supply according to claim 4, which is characterized in that one end of the primary side of the current transformer connects
The secondary side of the transformer, the other end of the primary side of the current transformer connect the first rectification unit, first rectification
The electric current that unit is used to export the transformer rectifies.
6. Switching Power Supply according to claim 4, which is characterized in that one end of the primary side of the current transformer connects
The other end of the output end of second rectification unit, the primary side of the current transformer connects the first filter unit；Described second
The input terminal of rectification unit is connect with the secondary side of the transformer；What second rectification unit was used to export the transformer
Electric current is rectified, and first filter unit is for being filtered the electric current after the rectification.
7. Switching Power Supply according to claim 4, which is characterized in that one end of the primary side of the current transformer connects
The secondary side of the transformer, the other end ground connection of the primary side of the current transformer.
8. Switching Power Supply according to claim 1-7, which is characterized in that the current conversion unit and the electricity
Third rectification unit is additionally provided between stream sampling unit, what the third rectification unit was used to export the current conversion unit
Electric current is rectified.
9. Switching Power Supply according to claim 8, which is characterized in that the third rectification unit be full-wave rectifying circuit or
Half-wave rectifying circuit.
10. Switching Power Supply according to claim 1-7, which is characterized in that the current sampling unit and described
The second filter unit is additionally provided between control module；Second filter unit is used for the electricity exported to the current sampling unit
Stream is filtered.
11. Switching Power Supply according to claim 10, which is characterized in that second filter unit, comprising:
First resistor, second resistance, first capacitor and the second capacitor；
Wherein, the first end of the first resistor is connect with the current sampling unit, the second end difference of the first resistor
It is connect with the first end of the second resistance and the first capacitor, the other end of the second resistance and second capacitor
One end connection, the first capacitor are connected with the other end of second capacitor.
12. Switching Power Supply according to claim 1-7, which is characterized in that the current sampling unit includes: to adopt
Sample resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821993583.2U CN209001839U (en) | 2018-11-30 | 2018-11-30 | Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821993583.2U CN209001839U (en) | 2018-11-30 | 2018-11-30 | Switching Power Supply |
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| Publication Number | Publication Date |
|---|---|
| CN209001839U true CN209001839U (en) | 2019-06-18 |
Family
ID=66808053
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821993583.2U Active CN209001839U (en) | 2018-11-30 | 2018-11-30 | Switching Power Supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995222A (en) * | 2019-12-04 | 2020-04-10 | 华中科技大学 | Short-circuit protection device of GaN power switch device |
-
2018
- 2018-11-30 CN CN201821993583.2U patent/CN209001839U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995222A (en) * | 2019-12-04 | 2020-04-10 | 华中科技大学 | Short-circuit protection device of GaN power switch device |
| CN110995222B (en) * | 2019-12-04 | 2022-02-18 | 华中科技大学 | Short-circuit protection device of GaN power switch device |
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