CN218071330U - Power supply driving circuit safe to use - Google Patents
Power supply driving circuit safe to use Download PDFInfo
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- CN218071330U CN218071330U CN202221250146.8U CN202221250146U CN218071330U CN 218071330 U CN218071330 U CN 218071330U CN 202221250146 U CN202221250146 U CN 202221250146U CN 218071330 U CN218071330 U CN 218071330U
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Abstract
The utility model discloses a power driving circuit with safe use, which comprises a power management chip and a chip power end power supply module, and is characterized in that a low-voltage switch component is connected between the power end of the power management chip and the chip power end power supply module; the intelligent product has the advantages that when the intelligent hardware needs to be reset, the power line plug of the intelligent product does not need to be plugged, and only the self-locking switch in the low-voltage switch assembly connected to the power driving circuit needs to be pressed; and the power end of the power management chip is clamped by the voltage stabilizing diode in the low-voltage switch assembly, so that the highest voltage of the power management chip is lower than DC30V, the high-voltage breakdown of the power management chip at the moment of switching on the self-locking switch is prevented, the working stability of the power management chip is ensured, meanwhile, the ignition phenomenon generated when a power plug is plugged in or unplugged in the traditional manner is avoided, and the operation safety is ensured.
Description
Technical Field
The utility model relates to a power drive circuit especially relates to a power drive circuit safe in utilization.
Background
Along with the development of science and technology, intelligent hardware product begins to popularize gradually, no matter be articles for use at home or outdoor product, its intelligent hardware is mostly controlled through WIFI or bluetooth wireless connection technique, but wireless connection technique in use appears falling the line easily or the off-line, needs the user to reset intelligent product, just once again can be accomplished with the APP connection on cell-phone or the control end. For some intelligent hardware products, such as intelligent hardware of a lamp, after the intelligent hardware is disconnected, a power plug needs to be plugged for many times to complete resetting, but for the lamp used outdoors, the power plug of the lamp is generally directly plugged into a power socket, and as the used power voltage is generally between 100V and 240V, when the intelligent hardware is plugged, the phenomenon of sparking is easily generated between the plug and the socket, so that safety risk is brought to the resetting operation of the intelligent hardware.
Disclosure of Invention
The utility model aims to solve the technical problem that a power driving circuit safe in utilization is provided, it can prevent the switch-on high voltage breakdown power management chip in the twinkling of an eye when power break-make reset operation, avoids taking place the phenomenon of striking sparks, has guaranteed the operational safety.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a power driving circuit safe to use comprises a power management chip and a chip power end power supply module, wherein a low-voltage switch assembly is connected between the power end of the power management chip and the chip power end power supply module.
Furthermore, the low-voltage switch assembly comprises a switch and a voltage stabilizing diode, one end of the switch is electrically connected with the power supply end of the power management chip, the other end of the switch and the cathode end of the voltage stabilizing diode are both electrically connected with the power supply module of the chip power supply end, and the anode end of the voltage stabilizing diode is electrically connected with the grounding end of the power management chip.
Furthermore, a filter capacitor is connected in parallel to the zener diode.
Furthermore, the switch is a self-locking switch.
Compared with the prior art, the utility model has the advantages that the low-voltage switch component is connected between the power end of the power management chip of the existing power driving circuit and the power supply module of the chip power end, when the intelligent hardware needs to be reset, the power line plug of the intelligent product does not need to be plugged, and only the self-locking switch in the low-voltage switch component connected on the power driving circuit needs to be pressed; and the power end of the power management chip is clamped by the voltage stabilizing diode in the low-voltage switch assembly, so that the highest voltage of the power management chip is lower than DC30V, the high-voltage breakdown of the power management chip at the moment of switching on the self-locking switch is prevented, the working stability of the power management chip is ensured, meanwhile, the ignition phenomenon generated when a power plug is plugged in or unplugged in the traditional manner is avoided, and the operation safety is ensured.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
fig. 2 is the utility model discloses a circuit connection schematic diagram between power management chip, chip power end power module and the low-voltage switch subassembly three among the power drive circuit.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in the figure, a power driving circuit safe in utilization, including power management chip U1 and chip power end power module 1, be connected with low-voltage switch subassembly 2 between power management chip U1 ' S power end VDD and the chip power end power module 1, low-voltage switch subassembly 2 includes self-locking switch S1 and zener diode DZ3, self-locking switch S1 ' S one end is connected with power management chip U1 ' S power end VDD electricity, self-locking switch S1 ' S the other end, zener diode DZ3 ' S negative pole end all is connected with chip power end power module 1 electricity, zener diode DZ3 ' S positive pole end is connected with power management chip U1 ' S earthing terminal PGND electricity, zener diode DZ3 is last to have filter capacitor C3 in parallel, can filter clutter signal on power management chip U1, make output voltage more stable.
In this embodiment, the power driving circuit further includes functional modules, such as a surge suppression and filtering module 3, a full-bridge rectification module 4, a pi-type filtering module 5, an RCD absorption module 6, a high-frequency rectification module 7, and a flyback switch pulse generation module 8, in addition to the power management chip U1 and the chip power supply end power supply module 1. Furthermore, the utility model provides a low-voltage switch subassembly 2 still can be applied to in other current power drive circuits for ensure the stability of power management chip work.
The protection scope of the present invention includes but is not limited to the above embodiments, and the claims are to be read as the right, and any replacement, modification and improvement that can be easily conceived by those skilled in the art are all within the protection scope of the present invention.
Claims (4)
1. The utility model provides a power drive circuit safe in utilization, includes power management chip and chip power end power module, its characterized in that: and a low-voltage switch assembly is connected between the power supply end of the power management chip and the power supply module of the chip power supply end.
2. A power driver circuit as claimed in claim 1, wherein: the low-voltage switch component comprises a switch and a voltage stabilizing diode, one end of the switch is electrically connected with the power supply end of the power management chip, the other end of the switch and the cathode end of the voltage stabilizing diode are both electrically connected with the power supply module of the chip power supply end, and the anode end of the voltage stabilizing diode is electrically connected with the grounding end of the power management chip.
3. A power driver circuit as claimed in claim 2, wherein: and the voltage stabilizing diode is connected with a filter capacitor in parallel.
4. A power driver circuit as claimed in claim 2, wherein: the switch is a self-locking switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221250146.8U CN218071330U (en) | 2022-05-23 | 2022-05-23 | Power supply driving circuit safe to use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221250146.8U CN218071330U (en) | 2022-05-23 | 2022-05-23 | Power supply driving circuit safe to use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218071330U true CN218071330U (en) | 2022-12-16 |
Family
ID=84430958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221250146.8U Active CN218071330U (en) | 2022-05-23 | 2022-05-23 | Power supply driving circuit safe to use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218071330U (en) |
-
2022
- 2022-05-23 CN CN202221250146.8U patent/CN218071330U/en active Active
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