Power Electronics / Power Management


Automotive H-bridge driver

1 October 2019 Power Electronics / Power Management

The TLE985x H-bridge MOSFET driver IC product family from Infineon Technologies is an ideal fit for compact and cost-effective motor control solutions. It targets automotive applications such as sunroof, window lift, power lift gate and auxiliary pumps.

It integrates a 32-bit Arm Cortex-M0 core together with market proven peripherals such as two sets of ADCs, an HV-MON, a LIN transceiver and a current-controlled H-bridge driver. This enables a very cost-effective solution at the system level.

By using a MOSFET-based motor application the ECU height can be reduced and the ‘clicking’ noise of the relay can be eliminated. Additionally, diagnostic functions for over-current protection of the motor are integrated. Furthermore, with PWM controlled motors the mechanical stress can be reduced by torque motor control and additional comfort functions like soft start/stop can be achieved.


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