CN218976348U - Audio chip power supply circuit - Google Patents
Audio chip power supply circuit Download PDFInfo
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- CN218976348U CN218976348U CN202223494687.8U CN202223494687U CN218976348U CN 218976348 U CN218976348 U CN 218976348U CN 202223494687 U CN202223494687 U CN 202223494687U CN 218976348 U CN218976348 U CN 218976348U
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses an audio chip power supply circuit, which relates to the technical field of power supplies and comprises a power supply module for supplying power; the step-down control module is used for step down; the first voltage stabilizing module and the second voltage stabilizing module are both used for outputting voltage stabilization; the first undervoltage control module is used for undervoltage detection and controlling the work of the second undervoltage control module; the second under-voltage control module is used for under-voltage detection and controlling the switch self-locking control module to perform switch self-locking and controlling the discharging module to perform electric energy discharging; and the audio chip module is used for connecting the power end of the audio chip. The audio chip power supply circuit adopts two-way voltage stabilization and single output power supply, when the first voltage stabilization module generates undervoltage, the uninterrupted voltage stabilization power supply of the second voltage stabilization module is controlled, the power supply of the audio chip is ensured, when the second voltage stabilization module also generates undervoltage, the switch self-locking control module automatically cuts off the power supply, and meanwhile, the residual voltage of the audio chip is discharged by the discharging module.
Description
Technical Field
The utility model relates to the technical field of power supplies, in particular to an audio chip power supply circuit.
Background
The audio chip is a simpler voice circuit, various audio signals can be generated mainly through an internal oscillating circuit and an external component, audio output is achieved, the audio chip is widely applied to equipment such as headphones, music players, mobile phones and electronic doorbell, when the audio chip works, the audio chip is easy to be influenced by external factors, such as power supply interference, so that output audio signals are impurity, most of existing audio chip power supply circuits only adopt voltage stabilizing circuits to provide required stable voltage, and power-off protection functions are directly carried out when under-voltage occurs, so that the audio chip stops working, fault positions cannot be approximately determined, the audio chip cannot be immediately stopped working after power is off, and then played audio signals are impurity, so that the audio chip needs to be improved.
Disclosure of Invention
The embodiment of the utility model provides an audio chip power supply circuit to solve the problems in the background technology.
According to an embodiment of the present utility model, there is provided an audio chip power supply circuit including: the device comprises a power supply module, a voltage reduction control module, a first voltage stabilization module, a second voltage stabilization module, a first under-voltage control module, a second under-voltage control module, a switch self-locking control module, a discharging module and an audio chip module;
the power supply module is used for providing electric energy and carrying out voltage reduction, rectification and filtering treatment on the input electric energy;
the voltage reduction control module is connected with the power supply module and is used for carrying out further voltage reduction treatment on the electric energy output by the power supply module;
the first voltage stabilizing module is connected with the voltage reducing control module and is used for stabilizing the electric energy output by the voltage reducing control module and outputting the electric energy required by the audio chip module;
the second voltage stabilizing module is connected with the voltage reducing control module and is used for stabilizing the electric energy output by the voltage reducing control module and outputting the electric energy required by the audio chip module;
the first undervoltage control module is connected with the first voltage stabilizing module and the second undervoltage control module, and is used for detecting the voltage output by the first voltage stabilizing module and carrying out undervoltage judgment and controlling the work of the second undervoltage control module;
the second undervoltage control module is connected with the second voltage stabilizing module and used for detecting the voltage output by the second voltage stabilizing module and carrying out undervoltage judgment and outputting a protection control signal;
the switch self-locking control module is connected with the second under-voltage control module and the voltage reduction control module, and is used for receiving the protection control signal and outputting a self-locking signal by the triode circuit, controlling the work of the relay circuit by the self-locking signal and intercepting the electric energy output by the voltage reduction control module;
the discharging module is connected with the second under-voltage control module and is used for receiving the protection control signal and controlling the excessive electric energy in the audio chip module to discharge;
the audio chip module is connected with the first voltage stabilizing module, the second voltage stabilizing module and the discharging module and is used for connecting a power end of the audio chip.
Compared with the prior art, the utility model has the beneficial effects that: the audio chip power supply circuit adopts the first voltage stabilizing module and the second voltage stabilizing module to carry out double-circuit voltage stabilizing single-output power supply, when the first voltage stabilizing module has undervoltage, the uninterrupted voltage stabilizing power supply of the second voltage stabilizing module is controlled, the power supply of the audio chip is ensured, the first voltage stabilizing module can be known to have faults, when the second voltage stabilizing module also has undervoltage, the switch self-locking control module automatically cuts off the power supply, the interference of the undervoltage on the audio chip is avoided, and meanwhile, the residual voltage of the audio chip is discharged by the discharging module, so that the audio chip can stop working with the audio chip quickly, and the noise of audio played during the cut-off is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of an audio chip power supply circuit according to an embodiment of the present utility model.
Fig. 2 is a circuit diagram of an audio chip power supply circuit according to an embodiment of the present utility model.
Fig. 3 is a circuit diagram of a connection of a switch self-locking control module according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In embodiment 1, referring to fig. 1, an audio chip power supply circuit includes: the device comprises a power supply module 1, a voltage reduction control module 2, a first voltage stabilizing module 3, a second voltage stabilizing module 4, a first under-voltage control module 5, a second under-voltage control module 6, a switch self-locking control module 7, a discharging module 8 and an audio chip module 9;
specifically, the power module 1 is configured to provide electric energy and perform voltage reduction, rectification and filtering on the input electric energy;
the voltage reduction control module 2 is connected with the power supply module 1 and is used for carrying out further voltage reduction treatment on the electric energy output by the power supply module 1;
the first voltage stabilizing module 3 is connected with the voltage reducing control module 2 and is used for stabilizing the voltage of the electric energy output by the voltage reducing control module 2 and outputting the electric energy required by the audio chip module 9;
the second voltage stabilizing module 4 is connected with the voltage reducing control module 2 and is used for stabilizing the voltage of the electric energy output by the voltage reducing control module 2 and outputting the electric energy required by the audio chip module 9;
the first under-voltage control module 5 is connected with the first voltage stabilizing module 3 and the second under-voltage control module 6, and is used for detecting the voltage output by the first voltage stabilizing module 3 and performing under-voltage judgment and controlling the work of the second under-voltage control module 6;
the second under-voltage control module 6 is connected with the second voltage stabilizing module 4 and is used for detecting the voltage output by the second voltage stabilizing module 4 and carrying out under-voltage judgment and outputting a protection control signal;
the switch self-locking control module 7 is connected with the second under-voltage control module 6 and the voltage reduction control module 2, and is used for receiving the protection control signal and outputting a self-locking signal by the triode circuit, controlling the work of the relay circuit by the self-locking signal and intercepting the electric energy output by the voltage reduction control module 2;
the discharging module 8 is connected with the second under-voltage control module 6 and is used for receiving the protection control signal and controlling the excessive electric energy in the audio chip module 9 to discharge;
and the audio chip module 9 is connected with the first voltage stabilizing module 3, the second voltage stabilizing module 4 and the discharging module 8 and is used for connecting a power end of the audio chip.
In a specific embodiment, the power module 1 may adopt a power input port to connect to a power source, and the transformer W, the rectifier T and the filter capacitor C1 perform voltage reduction, rectification and filtering on the input electric energy; the audio chip module 9 is an output port of the circuit, and is an input port of a power supply end of the audio chip, which is not described herein.
In this embodiment, referring to fig. 2 and 3, the buck control module 2 includes a first voltage regulator U1 and a second capacitor C2; the switch self-locking control module 7 comprises a first relay switch K1-1;
specifically, the first input end and the second input end of the first voltage regulator U1 are both connected to the power module 1, the output end of the first voltage regulator U1 is connected to one end of the second capacitor C2 and the first end of the first relay switch K1-1, the other end of the second capacitor C2 and the ground end of the first voltage regulator U1 are both grounded, and the second end of the first relay switch K1-1 is connected to the first voltage stabilizing module 3 and the second voltage stabilizing module 4.
In a specific embodiment, the first voltage regulator U1 is configured to step down the electric energy output by the power module 1 to 5V-12V, and the specific model is not limited; the first relay switch K1-1 may be a normally closed contact switch.
Further, the first voltage stabilizing module 3 includes a first inductor L1, a first diode D1, a second voltage regulator U2, a first resistor R1, a third capacitor C3, a second resistor R2, and a third resistor R3;
specifically, one end of the first inductor L1 and the fifth end of the second voltage regulator U2 are both connected to the second end of the first relay switch K1-1, the other end of the first inductor L1 is connected to the fourth end of the second voltage regulator U2 and the anode of the first diode D1, the cathode of the first diode D1 is connected to one end of the second resistor R2 and the first under-voltage control module 5, the second end of the second voltage regulator U2 is connected to the other end of the second resistor R2 and to one end of the third capacitor C3 and to the ground through the third resistor R3, the other end of the third capacitor C3 is connected to the first end of the second voltage regulator U2 through the first resistor R1, and the third end of the second voltage regulator U2 is grounded.
Further, the second voltage stabilizing module 4 includes a second inductor L2, a second diode D2, a third voltage regulator U3, a sixth resistor R6, a fourth capacitor C4, a fourth resistor R4, and a fifth resistor R5;
specifically, the circuit connection structures of the second inductor L2, the second diode D2, the third voltage regulator U3, the sixth resistor R6, the fourth capacitor C4, the fourth resistor R4, and the fifth resistor R5 are the same as the circuit connection structures of the first inductor L1, the first diode D1, the second voltage regulator U2, the first resistor R1, the third capacitor C3, the second resistor R2, and the third resistor R3.
In a specific embodiment, the second voltage regulator U2 and the third voltage regulator U3 may be regulators that output voltages required by the audio chip, and specific models are not limited.
Further, the first under-voltage control module 5 includes a seventh resistor R7, an eighth resistor R8, a first switching tube VT1, a ninth resistor R9, a third diode D3, a second switching tube VT2, a nineteenth resistor R19, and an eighth switching tube VT8; the audio chip module 9 comprises an audio chip power port;
specifically, one end of the seventh resistor R7, one end of the ninth resistor R9, one end of the nineteenth resistor R19 and an anode of the third diode D3 are connected to a cathode of the first diode D1, the other end of the seventh resistor R7 is connected to a base of the first switching tube VT1 and is connected to an emitter and a ground of the first switching tube VT1 through the eighth resistor R8, a collector of the first switching tube VT1 is connected to the other end of the ninth resistor R9, a base of the second switching tube VT2 and a base of the eighth switching tube VT8, a collector of the eighth switching tube VT8 is connected to the other end of the nineteenth resistor R19, an emitter of the eighth switching tube VT8 is grounded, a collector of the second switching tube VT2 is connected to the second diode D2, an emitter of the second switching tube VT2 is connected to the second under-voltage control module 6, and a cathode of the third diode D3 is connected to an audio chip power supply port.
In a specific embodiment, the first switching tube VT1, the second switching tube VT2, and the eighth switching tube VT8 may all be NPN transistors; the seventh resistor R7 and the eighth resistor R8 form a resistor divider circuit to detect the voltage condition output by the first voltage stabilizing module 3.
Further, the second under-voltage control module 6 includes a tenth resistor R10, an eleventh resistor R11, a third switching tube VT3, a twelfth resistor R12, and a fourth diode D4;
specifically, one end of the tenth resistor R10, one end of the twelfth resistor R12 and the cathode of the fourth diode D4 are connected to the emitter of the second switching tube VT2, the other end of the tenth resistor R10 is connected to the base of the third switching tube VT3 and is connected to the emitter of the third switching tube VT3 and the ground through the eleventh resistor R11, the other end of the twelfth resistor R12 is connected to the collector of the third switching tube VT3, the bleeder module 8 and the switch self-locking control module 7, and the cathode of the fourth diode D4 is connected to the power port of the audio chip.
In a specific embodiment, the third switching transistor VT3 may be an NPN transistor.
Further, the bleeder module 8 comprises a seventh switching tube VT7 and an eighteenth resistor R18;
specifically, the collector of the seventh switching tube VT7 is connected to the power port of the audio chip, the base of the seventh switching tube VT7 is connected to the collector of the third switching tube VT3, and the emitter of the seventh switching tube VT7 is connected to the ground terminal through an eighteenth resistor R18.
In a specific embodiment, the seventh switching transistor VT7 may be an NPN transistor; the eighteenth resistor R18 is a bleeder resistor.
Further, the switch self-locking control module 7 includes a fifth diode D5, a fifteenth resistor R15, a fourteenth resistor R14, a fifth switching tube VT5, a first relay K1, a thirteenth resistor R13, a fourth switching tube VT4, a sixth switching tube VT6, a sixteenth resistor R16, and a seventeenth resistor R17;
specifically, the cathode of the fifth diode D5 and one end of the first relay K1 are both connected to the power module 1 and connected to the emitter of the fifth switching tube VT5 through a fifteenth resistor R15, the base of the fifth switching tube VT5 is connected to one end of a fourteenth resistor R14, the other end of the first relay K1 and the anode of the fifth diode D5 and connected to the collector of the fourth switching tube VT4 through a thirteenth resistor R13, the base of the fourth switching tube VT4 is connected to the collector of the third switching tube VT3, the emitter of the fourth switching tube VT4, the emitter of the sixth switching tube VT6 and one end of a seventeenth resistor R17 are all grounded, the collector of the fifth switching tube VT5 is connected to the other end of the seventeenth resistor R17 and the base of the sixth switching tube VT6 through a sixteenth resistor R16, and the collector of the sixth switching tube VT6 is connected to the other end of the fourteenth resistor R14.
In a specific embodiment, the fifth switching tube VT5 may be a PNP transistor, and the fourth switching tube VT4 and the sixth switching tube VT6 may be NPN transistors; the first relay K1 controls the operation of the first relay switch K1-1.
According to the audio chip power supply circuit, when the audio chip power supply circuit works normally, the power supply module 1 supplies electric energy, the voltage reduction control module 2 carries out voltage reduction processing, the first voltage stabilizing module 3 supplies required stable voltage to the audio chip power supply port, when the voltage output by the first voltage stabilizing module 3 is lower than the voltage output normally, the first switching tube VT1 is disconnected, the eighth switching tube VT8 and the second switching tube VT2 are conducted, the voltage output by the first voltage stabilizing module 3 is disconnected from the audio chip power supply port, meanwhile, the voltage output by the second voltage stabilizing module 4 is stably transmitted to the audio chip power supply port, when the second voltage stabilizing module 4 has an under-voltage condition, the third switching tube VT3 is disconnected, the seventh switching tube VT7 is conducted, the audio chip power supply port is connected with the eighteenth resistor R18, residual voltage of the audio chip power supply port is consumed through the eighteenth resistor R18, meanwhile, the fourth switching tube VT4 is in a conducting state due to the disconnection of the third switching tube VT3, the fifth switching tube VT5 and the sixth switching tube VT6 are sequentially conducted, the first relay K1 is continuously disconnected, and the audio chip power supply is continuously stopped from the first relay K1 to the audio chip power supply port.
This audio chip power supply circuit adopts first steady voltage module 3 and second steady voltage module 4 to carry out double-circuit steady voltage single output power supply, when first steady voltage module 3 appears under-voltage, the uninterrupted steady voltage power supply of control second steady voltage module 4 ensures the power supply of audio chip, and can learn that first steady voltage module 3 breaks down, when second steady voltage module 4 also appears under-voltage, switch auto-lock control module 7 will cut off the power supply voluntarily, avoid under-voltage to bring the interference for audio chip, carry out the processing of releasing to audio chip's residual voltage by the module 8 that releases simultaneously, make audio chip can stop work with fast, the audio frequency of broadcast appears the noise when avoiding cutting off.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. An audio chip power supply circuit is characterized in that,
the audio chip power supply circuit includes: the device comprises a power supply module, a voltage reduction control module, a first voltage stabilization module, a second voltage stabilization module, a first under-voltage control module, a second under-voltage control module, a switch self-locking control module, a discharging module and an audio chip module;
the power supply module is used for providing electric energy and carrying out voltage reduction, rectification and filtering treatment on the input electric energy;
the voltage reduction control module is connected with the power supply module and is used for carrying out further voltage reduction treatment on the electric energy output by the power supply module;
the first voltage stabilizing module is connected with the voltage reducing control module and is used for stabilizing the electric energy output by the voltage reducing control module and outputting the electric energy required by the audio chip module;
the second voltage stabilizing module is connected with the voltage reducing control module and is used for stabilizing the electric energy output by the voltage reducing control module and outputting the electric energy required by the audio chip module;
the first undervoltage control module is connected with the first voltage stabilizing module and the second undervoltage control module, and is used for detecting the voltage output by the first voltage stabilizing module and carrying out undervoltage judgment and controlling the work of the second undervoltage control module;
the second undervoltage control module is connected with the second voltage stabilizing module and used for detecting the voltage output by the second voltage stabilizing module and carrying out undervoltage judgment and outputting a protection control signal;
the switch self-locking control module is connected with the second under-voltage control module and the voltage reduction control module, and is used for receiving the protection control signal and outputting a self-locking signal by the triode circuit, controlling the work of the relay circuit by the self-locking signal and intercepting the electric energy output by the voltage reduction control module;
the discharging module is connected with the second under-voltage control module and is used for receiving the protection control signal and controlling the excessive electric energy in the audio chip module to discharge;
the audio chip module is connected with the first voltage stabilizing module, the second voltage stabilizing module and the discharging module and is used for connecting a power end of the audio chip.
2. The audio chip power supply circuit of claim 1, wherein the buck control module includes a first voltage regulator and a second capacitor; the switch self-locking control module comprises a first relay switch;
the first input end and the second input end of the first voltage regulator are both connected with the power supply module, the output end of the first voltage regulator is connected with one end of the second capacitor and the first end of the first relay switch, the other end of the second capacitor and the grounding end of the first voltage regulator are both grounded, and the second end of the first relay switch is connected with the first voltage stabilizing module and the second voltage stabilizing module.
3. The audio chip power supply circuit of claim 2, wherein the first voltage stabilizing module comprises a first inductor, a first diode, a second voltage regulator, a first resistor, a third capacitor, a second resistor, and a third resistor;
one end of the first inductor and the fifth end of the second voltage regulator are both connected with the second end of the first relay switch, the other end of the first inductor is connected with the fourth end of the second voltage regulator and the anode of the first diode, the cathode of the first diode is connected with one end of the second resistor and the first undervoltage control module, the second end of the second voltage regulator is connected with the other end of the second resistor and is connected with one end of the third capacitor and the ground end through the third resistor, the other end of the third capacitor is connected with the first end of the second voltage regulator through the first resistor, and the third end of the second voltage regulator is grounded.
4. The audio chip power supply circuit according to claim 3, wherein the second voltage stabilizing module comprises a second inductor, a second diode, a third voltage regulator, a sixth resistor, a fourth capacitor, a fourth resistor, and a fifth resistor;
the circuit connection structures of the second inductor, the second diode, the third voltage regulator, the sixth resistor, the fourth capacitor, the fourth resistor and the fifth resistor are the same as the circuit connection structures of the first inductor, the first diode, the second voltage regulator, the first resistor, the third capacitor, the second resistor and the third resistor.
5. The audio chip power supply circuit of claim 4, wherein the first under-voltage control module comprises a seventh resistor, an eighth resistor, a first switching tube, a ninth resistor, a third diode, a second switching tube, a nineteenth resistor, and an eighth switching tube; the audio chip module comprises an audio chip power port;
one end of the seventh resistor, one end of the ninth resistor, one end of the nineteenth resistor and the anode of the third diode are connected with the cathode of the first diode, the other end of the seventh resistor is connected with the base electrode of the first switching tube and is connected with the emitter electrode of the first switching tube and the ground end through the eighth resistor, the collector electrode of the first switching tube is connected with the other end of the ninth resistor, the base electrode of the second switching tube and the base electrode of the eighth switching tube, the collector electrode of the eighth switching tube is connected with the other end of the nineteenth resistor, the emitter electrode of the eighth switching tube is grounded, the collector electrode of the second switching tube is connected with the second diode, the emitter electrode of the second switching tube is connected with the second under-voltage control module, and the cathode of the third diode is connected with the power port of the audio chip.
6. The audio chip power supply circuit of claim 5, wherein the second under-voltage control module comprises a tenth resistor, an eleventh resistor, a third switching tube, a twelfth resistor, and a fourth diode;
one end of the tenth resistor, one end of the twelfth resistor and the cathode of the fourth diode are connected with the emitter of the second switching tube, the other end of the tenth resistor is connected with the base of the third switching tube and is connected with the emitter of the third switching tube and the ground end through the eleventh resistor, the other end of the twelfth resistor is connected with the collector of the third switching tube, the discharging module and the switch self-locking control module, and the cathode of the fourth diode is connected with the power port of the audio chip.
7. The audio chip power supply circuit of claim 6, wherein the bleed module comprises a seventh switching tube and an eighteenth resistor;
and the collector electrode of the seventh switching tube is connected with the power supply port of the audio chip, the base electrode of the seventh switching tube is connected with the collector electrode of the third switching tube, and the emitter electrode of the seventh switching tube is connected with the ground end through an eighteenth resistor.
8. The audio chip power supply circuit according to claim 6, wherein the switch self-locking control module comprises a fifth diode, a fifteenth resistor, a fourteenth resistor, a fifth switching tube, a first relay, a thirteenth resistor, a fourth switching tube, a sixth switching tube, a sixteenth resistor, and a seventeenth resistor;
the cathode of the fifth diode and one end of the first relay are both connected with the power module and are connected with the emitter of the fifth switching tube through a fifteenth resistor, the base electrode of the fifth switching tube is connected with one end of the fourteenth resistor, the other end of the first relay and the anode of the fifth diode and is connected with the collector of the fourth switching tube through a thirteenth resistor, the base electrode of the fourth switching tube is connected with the collector of the third switching tube, the emitter of the fourth switching tube, the emitter of the sixth switching tube and one end of the seventeenth resistor are all grounded, the collector of the fifth switching tube is connected with the other end of the seventeenth resistor and the base electrode of the sixth switching tube through a sixteenth resistor, and the collector of the sixth switching tube is connected with the other end of the fourteenth resistor.
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| CN202223494687.8U CN218976348U (en) | 2022-12-27 | 2022-12-27 | Audio chip power supply circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116819166A (en) * | 2023-08-31 | 2023-09-29 | 苏州贝克微电子股份有限公司 | High-voltage end undervoltage detection circuit |
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- 2022-12-27 CN CN202223494687.8U patent/CN218976348U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116819166A (en) * | 2023-08-31 | 2023-09-29 | 苏州贝克微电子股份有限公司 | High-voltage end undervoltage detection circuit |
| CN116819166B (en) * | 2023-08-31 | 2023-11-03 | 苏州贝克微电子股份有限公司 | High-voltage end undervoltage detection circuit |
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