张三叔

BTN7971B module_high power H-bridge driver

Overview

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This module can be used to drive high-power DC brush motors, or used in smart car competition motor drive boards.
The module uses Infineon BTN7971B half-bridge driver IC. The gate driver circuit is integrated inside the IC, eliminating the need to design an external gate driver circuit.
Rated input voltage: 6-28V (recommended not to exceed 35V)
PWM input frequency: 1KHz-10KHz (PWM signal frequency too high will cause serious heating)
Onboard single channel total 660UF power supply filter aluminum electrolytic capacitor
The maximum current of a single channel can reach 90A, but good heat dissipation conditions need to be provided for the module
There are two interfaces for signal input, conventional DuPont cable interface and 0.5mm pitch FPC cable interface
The input signal is isolated and compatible with 3.3V and 5V levels
Taking into account the protection of the MCU, the module has a high-impedance input and a 4.7K resistor in series to limit the current under extreme conditions.
The module EN enable default 4.7k resistor is pulled down to ground, and the two driver ICs share an EN enable signal.

Design Files

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Update:2025-05-18 15:26:53

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