A dual channel low voltage ideal diode

By utilizing the intelligent gate drive technology and programmable protection function of dual-channel low-voltage ideal diodes, the high power consumption and non-programmability issues of traditional diodes in power redundancy switching are solved, achieving low on-state voltage drop and fast reverse current blocking, making it suitable for efficient power management in fields such as drones and aerospace.

CN122225843APending Publication Date: 2026-06-1658TH RES INST OF CETC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
58TH RES INST OF CETC
Filing Date
2026-03-23
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

In existing technologies, traditional power diodes suffer from high power consumption, severe heat generation, lack of active control and protection functions, and non-programmable parameters during power redundancy switching, making it difficult to meet the needs of drones and aerospace fields for low power consumption, programmable protection, and fast reverse blocking.

Method used

Employing a dual-channel low-voltage ideal diode, it integrates a power input pin, current sampling circuit, temperature detection circuit, and a current sensing circuit. Through intelligent gate drive technology, it achieves a low on-state voltage drop of the power transistor and is equipped with programmable current limit and temperature protection functions, supporting fast reverse current blocking.

Benefits of technology

It achieves a low on-state voltage drop of 15mV, reduces power consumption by more than 90%, reduces heat generation, features fast reverse current blocking and temperature protection, supports seamless power switching, and is suitable for efficient, reliable and flexible power management for critical loads.

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Abstract

The present application relates to a kind of double-channel low-voltage ideal diode, including two independent and same structure channel, the power PMOS tube of each channel is integrated, gate drive circuit, current sampling circuit, programmable current limiting circuit, temperature detection circuit and undervoltage lockout circuit.The present application is adjusted by gate drive circuit intelligent degree of power tube conduction, maintain about 15mV ultra-low conduction voltage drop when light load, more than 90% lower than traditional schottky diode power consumption;Through CLIMx external resistance, current limiting value can be flexibly set;With two-stage temperature protection (130 ℃ early warning / 160 ℃ shutdown) and fast reverse current blocking function, seamless switching of main backup power supply can be realized.The present application effectively solves the problems of high power consumption, serious heating, lack of programmable protection and reverse current risk of existing diode scheme, and is especially suitable for unmanned aerial vehicle, aerospace and industrial control in the key load power supply with strict requirements on volume, power consumption and reliability.
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