Aug 30th, 2016 05:30 AM
BTN8982TA Half Bridge Motor Driver
This is my very first post at Infineon Forums.
I am using BTN8982TA Half Bridge to drive a 12V 250W DC motor. I have used the schematic given in the application note of BTN8982TA (Attached Below). A PWM of frequency 490Hz is used to vary the speed.
When I drive the motor with the circuit, the circuit draws more current than what the motor draws at full 12V. I have tried varying the slew rate resistor from 5 Ohms to 51K Ohms. But it did not change the current. I am guessing a cross conduction between the PMOS and the NMOS.
Will increasing the PWM frequency help?
Kindly provide a solution for this problem.
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