When the micro-controller switches on, there are 4 possible states for the two mosfets.
Both mosfets conducting : 3A flows. Actuators have been designed for this current.
PMOSFET OFF, N MOSFET ON: Actuator in free wheeling mode, current has to decrease gradually from 3 A.
MOSFET OFF, P...
Thank you for the pointer. I will look at the start up scenario in detail and post back.
I will also condition the ACS current sensor output signal before giving the feed back to the mcu.
Thanks.
Hi tech 99,
Thank you for the reply. 20khz is the frequency of the pwm signal to the mosfets from the micro controller. Operating frequency of the drive is about 100 hz, giving about 7 ohms reactance.
Thanks,
TIV
Hi,
I am making a half bridge power amplifier that operates at 24 V.
The bridge has to supply around 3A current to an inductive load (10mH)
The bridge will be controlled using 20kHz PWM from a microcontroller.
I have put a ACS712 current sensor in the load path to give feedaback to the...