Disable adaptive deadtime for HR1001A

DC-DC Power Converters
1

Hi, may I ask some points,

  1. Could HR1001A be able to work without adaptive deadtime? How can we disable deadtime?
  2. If point 1 or not feasible (HR1001A not able to work without adaptive deadtime), is there any other candidate that has capacitive mode prevention feature, but without adaptive deadtime?

My input is up to 1000Vdc, so I will need to add isolated gate driver. With this isolated gate driver added, pin SW should be same ground as GND, make it unable to sense the voltage switching in the converter, so it cannot adjust the deadtime and IC won’t work. To make it work, we need to disable adaptive deadtime.

2

Hello @xuanbac.nguyen,

In order to disable the adaptive deadtime, keep the the HBVS pin floating. It is also highlighted in the DS as well.
image

Best,
Saquib