Post Go back to editing

ADuM4135 Simulation Model not working

Category: Hardware
Product Number: ADuM4135

Hi all,

I am trying to simulate a half bridge converter on LTspice using the following components:

CAS175M12BM3 - Wolfspeed Power Module
ADuM4135 Gate Driver

Initially the model seems to be working as expenced, however, once the DC Voltage is increased beyond 66V, the HS_Gate seems to be clamping at -5V (Turn-off voltage).

I have tried to follow the gate driver design schematics provided by wolfspeed for their gate driver, sincethey are also using the ADuM4135.

I am not really sure why this is happening and whether it is a mistake ont he way I have modeled the system or not.

I am attaching my spice model figures on this message. 

I would really appreciate any help and advice.

Best regards,
Kosta Kotsis

Parents Reply Children