Ultralow-standby-power-consumption circuit for motor drive chip

Abstract

The invention discloses an ultralow-standby-power-consumption circuit for a motor drive chip. A logic control unit generates a P_CTRL signal and an N_CTRL signal according to the inputted IN1 and IN2signals through logic processing. A high-end power supply level generates a power supply voltage VIN-VDD according to the inputted IN1 and IN2 signals. A low-end power supply level unit generates a power supply voltage VDD according to the inputted IN1 and IN2 signals. A high-end drive level outputs a P_DRV signal through the gradually increasing phase inverter push-pull according to the inputtedP_CTRL signal. A low-end drive level outputs an N_DRV signal through the gradually increasing phase inverter push-pull according to the inputted N_CTRL signal. One end of a resistor R1 is connected with the output end of the high-end drive level and the grid electrode of a PMOS power tube P1, and the other end of the resistor R1 is connected with the input ends of the high-end drive level and thehigh-end power supply level and the source electrode of the PMOS power tube P1. One end of a resistor R2 is connected with the output end of the low-end drive level and the grid electrode of an NMOS power tube N1, and the other end of the resistor R2 is connected with the source electrode of the NMOS power tube N1, and the other end of the resistor R2 and the source electrode of the NMOS power tube N1 are grounded at the same time. The drain electrode of the PMOS power tube P1 is connected with the drain electrode of the NMOS power tube N1.

Description

technical field [0001] The invention relates to the technical field of electronic products, in particular to an ultra-low standby power consumption circuit for a motor drive chip. Background technique [0002] At present, people have higher and higher performance requirements for portable products, which is not only reflected in the substantial improvement in speed experience, but also plays a decisive role in power consumption. If the power consumption problem is not solved, the convenience and user experience of the product will be greatly reduced. will be greatly affected. [0003] However, as the speed of the circuit increases, theoretically speaking, the power consumption of the circuit will also increase proportionally; in addition, judging from the current industry development situation, the speed of circuit performance improvement is far greater than the speed of battery capacity increase. The above two factors determine that the index of product power consumption w...

AI Technical Summary

Problems solved by technology

[0002] At present, people have higher and higher performance requirements for portable products, which is not only reflected in the substantial improvement in speed experience, but also plays a decisive role in power consumption. If the power consumption problem is not solved, the convenience and user experience of the product will be greatly reduced. will be greatly affected

[0003] However, as the speed of the circuit increases, theoretically speaking, the power consumption of the circuit will also increase proportionally; in addition, judging from the current industry development situation, the speed of circuit performance improvement is far greater than the speed of battery capacity increase

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