Automatic and fast discharging circuit and method for monitoring power supply power down
The invention provides an automatic and fast discharging circuit and method for monitoring power supply power down. The automatic and fast discharging circuit and method for monitoring power supply power down comprises a switch with a manual reset function, a voltage monitoring chip U1, a DC-DC powe...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides an automatic and fast discharging circuit and method for monitoring power supply power down. The automatic and fast discharging circuit and method for monitoring power supply power down comprises a switch with a manual reset function, a voltage monitoring chip U1, a DC-DC power supply chip, a pull-up resistor circuit, an MOS tube Q1 and a discharging circuit. The switch with the manual reset function, the DC-DC power supply chip and the MOS tube Q1 are all connected to the voltage monitoring chip U1, and the pull-up resistor circuit are connected to the voltage monitoring chip U1, the MOS tube Q1 and the DC-DC power supply chip respectively; the discharging circuit are connected to the voltage monitoring chip U1, the MOS tube Q1 and the DC-DC power supply chip respectively. The invention further provides an automatic and fast discharging method for monitoring power supply power down. The automatic and fast discharging circuit and method for monitoring power supply power down is stable a |
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