Low-power-consumption redundant current sharing circuit based on PMOS

Abstract

The invention discloses a low-power-consumption redundant current sharing circuit based on a PMOS. The invention belongs to the technical field of power electronics. The PMOS-based low-power consumption redundant current sharing circuit can be applied to a load side; current sharing of two power supplies is not required; the requirement on the consistency of the output voltages of the two power supplies is relatively low; according to the circuit, a PMOS is used for applying negative voltage to a gate electrode; the low-resistance on-state characteristic between the drain electrode and the source electrode is realized; and the impedance between the drain electrode and the source electrode is controlled by the gate voltage amplitude. Measures such as a sampling resistor and an operational amplifier are combined; the input impedance of the two power supplies is automatically adjusted; current sharing of the two power supplies is realized; when the local heat of the circuit is too high inthe using process, the insulating liquid is pushed out and sprayed on the outer side of the gasket under the dispersion action of the release holes, and a layer of insulating liquid film is formed between the inner walls of the contact end holes under the action of the capillary fiber thorns, so that the whole circuit is insulated when the local temperature is too high.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a PMOS-based low power consumption redundant current sharing circuit. Background technique [0002] Circuit: A conductive circuit composed of metal wires and electrical and electronic components is called a circuit. Adding a power supply to the input end of the circuit causes a potential difference at the input end, and the circuit can work when it is connected. The existence of current can be tested by some instruments, such as voltmeter or ammeter deflection, light bulb lighting, etc.; according to the nature of the current flowing, it is generally divided into two types: the circuit through which direct current passes is called "DC circuit", and the circuit through which alternating current passes The circuit is called an "AC circuit". [0003] The bridge arm of the MMC flexible direct current transmission converter valve is composed of many power units in series. ...

AI Technical Summary

Problems solved by technology

Traditional current sharing measures are applied on the power supply side, and both power supplies need to have current sharing communication interfaces with the same communication protocol, which requires high power supply

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