Control of high-end ideal diode based on auxiliary tube at rear end of NMOS (N-channel Metal Oxide Semiconductor) tube
By using comparator and drive circuit in the high-end ideal diode circuit controlled by the back-end auxiliary pipe of NMOS tube, the problem of large static operating current loss and the need for additional auxiliary bias power in the prior art is solved, and the high-end ideal diode function with low loss and low cost is achieved.
CN119727335APending Publication Date: 2025-03-28JIAHE COUNTY YUEJIA ELECTRONIC TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202411994736.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The existing high-end ideal diode technology based on NMOS tubes has problems with large static operating current loss and the need for additional auxiliary bias power.
Method used
A high-end ideal diode circuit based on the auxiliary control of the NMOS tube is designed. Through the combination of comparator circuit and driver circuit, the conduction and turn-off of the NMOS tube is controlled, reducing static operating current loss without requiring additional auxiliary bias power.
Benefits of technology
It realizes high-end ideal diode functions with low loss and low cost, protects pre-stage power supplies, and simplifies circuit structure.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of diodes, in particular to a high-end ideal diode based on NMOS (N-channel metal oxide semiconductor) tube rear-end auxiliary tube control, a circuit is composed of an NMOS main tube, a comparator circuit, a bias power supply, a driving circuit and the like, and the comparator circuit is composed of two independent NMOS (NPN) auxiliary tubes or NMOS (NPN) pair tubes which have the same parameters and are packaged together, a resistor and the like. The comparator is used for comparing an input end power supply VCC and an output end power supply Vout, and a comparison signal output by an auxiliary tube V3 at the rear end of the comparator is connected with a grid electrode of the NMOS main tube through the driving circuit so as to control the conduction and cut-off of the NMOS main tube; the power supply VBIAS has a relatively high voltage and provides a bias power supply for controlling on and off of the NMOS main tube; the driving circuit can improve the driving capability of the NMOS main tube; various high-end ideal diode circuits with rear-end auxiliary tubes controlling NMOS main tubes are designed, circuit principle analysis and software simulation verification are carried out, and results show that the various designed circuits have functions of backward flow prevention and the like, can protect pre-stage circuits, and are simple and low in cost.
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