Other Parts Discussed in Thread: UCC27714EVM-551,
I have taken the reference circuit from UCC27714EVM-551, in which I used UCC28950PW as PWM generating IC, then output goes to ISO7240MDW which then drive the MOSFET drivers.
Currently I am giving 5V on VDD of UCC28950PW but I am not getting any output on VREF pin. but If I see the datasheet, it says that the VDD should be equal to UVLO which is 7.3V (UCC28950 Datashee section 7.3.1 ). But my concern is, If I give 7.3V as VDD, the output on OUTA, OUTB, OUTC and OUTD will also be around 7.3V (UCC28950 Datasheet section 6.1) which can damage ISO7240MDW as it can receive maximum input of 6V (ISO7240MDW Datasheet setion 7.1) .
I hope I explained my issue well but you can let me know if you need futher details. Also, in eference design, they are allowing upto 20V on VDD which is on test point TP10.
Here, I am going to attach the pictures of refered sections of datasheets and reference designs.
