Low-power-consumption simplified battery voltage detection circuit
The utility model provides a low-power-consumption simplified battery voltage detection circuit which comprises resistors R1, R2, R3 and R4, an MOS tube Q1 and a capacitor C1, one end of the resistor R1 is connected with an input voltage VCC, and the other end of the resistor R1 is connected with a...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model provides a low-power-consumption simplified battery voltage detection circuit which comprises resistors R1, R2, R3 and R4, an MOS tube Q1 and a capacitor C1, one end of the resistor R1 is connected with an input voltage VCC, and the other end of the resistor R1 is connected with a D pole of the MOS tube Q1; one end of the resistor R2 is connected with an SW pin of the MCU, the other end of the resistor R2 is respectively connected with the resistor R3 and a G pole of the MOS tube Q1, the other end of the resistor R3 is connected with a GND ground wire, one end of the resistor R4 is respectively connected with an S pole of the MOS tube Q1, the capacitor C1 and a VCC-AD pin of the MCU, and the other ends of the resistor R4 and the capacitor C1 are respectively grounded. According to the low-power-consumption simplified battery voltage detection circuit, an existing voltage detection circuit is optimized, the circuit is simplified, the occupied area value of a PCB is reduced, meanwhile, problem |
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