I am currently looking for a Quad (or Octal) high side driver that can support line voltage up to 32V.
I have checked the TPIC44H01 datasheet and noticed that the OVLO would set it at a minimum of 27.5V but the VPWR should survive up to 40V.
First I want to know if this feature can be disabled by any means.
If it cannot be done, I want to know if I can lower the VPWR voltage to 24V by Zener diode or a regulator and then rely on the charge pump to deliver the necessarily high gate voltage to turn on the MOSFETs.
I am using logic level VGS MOSFETs for this design so it should not be difficult to turn on. Will this modification causes other issues? (OVDS or the internal zener diode clamp I guess?)
Your suggestions is much appreciated.