hi Team:
I want to designed A half bridge circuit,and want to use UCC27282,Vbus=80V,Drive current>3A,but my Mcu only have one PWM output, so need to designed One PWM input, two Complementary PWM output, and with dead time control,Is there a recommended circuit or solution?
Hello David,
Thank you for the interest in the UCC27282 half bridge driver. The UCC27282 is a two input driver with the input interlock function which will prevent the LO and HO outputs from being high at the same time, even if the LI and HI inputs are high.
The diagram below shows a simple external small signal FET and pull up resistor that will result in the LO complementary output from the PWM and HO output.
The dead time can be set with the gate drive network on LO and HO to provide higher turn on resistance than turn off resistance.
Please confirm if this addresses your question, or you can post additional questions on this thread.
Regards,
