A multi-stage drive circuit of a power switch module, a motor controller and a vehicle

CN224555601UActive Publication Date: 2026-07-24DEEPAL AUTOMOBILE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DEEPAL AUTOMOBILE TECH CO LTD
Filing Date
2025-07-31
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The drive current in the existing drive circuit of the power switch module is not adjustable, which limits the switching speed and efficiency, and causes heat to damage the life of the motor controller.

Method used

A multi-stage drive circuit is adopted. By combining a drive isolation module, a power supply module, pull-up resistors, current-limiting resistors, and voltage divider resistors, the gate of the power switch module can obtain a variety of different drive currents. This includes adjusting the output signal combination of the drive isolation module and the resistor connection method to regulate the drive current.

Benefits of technology

It enables multi-level adjustment of drive current, reduces switching losses, and improves the working efficiency of motor controller.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224555601U_ABST
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Abstract

The utility model discloses a kind of multistage drive circuit of power switch module, motor controller and vehicle, it includes drive isolation module, power module, 3n pull-up resistors, 3n current-limiting resistors, 12m voltage divider and the number of gate of power switch module equal pull-down resistor, power module is connected with the 3n output end of MCU by 3n pull-up resistors, the 3n input end of drive isolation module is connected with the 3n output end of MCU by 3n current-limiting resistors, the 12m output end of drive isolation module is connected with the gate of power switch module and pull-down resistor by 12m voltage divider. Using the utility model can realize multistage drive current regulation, it is favorable to reduce switching loss, improve the working efficiency of motor controller.
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