LM5035: LM5035 is used for 100V Vin power supply，Will the HO port be damaged？

zoujiangyilang

Part Number: LM5035

Hello there
I see that the withstand voltage of the HO port of the LM5035 is 105V.

If the power supply Vin is 100V and the PWM drive voltage is 10V, then the maximum voltage of the HO port will reach 110V, will it damage the HO port？

So how can the LM5035 be used to ensure that the PWM drive voltage reaches 10V when Vin is 100V?

over 5 years ago

0 John Griffin1 over 5 years ago

TI__Mastermind 34465 points

Hello zoujiangyilang,

Yes you are correct.
The maximum ratings for high side gate driver output are listed in the Absolute Maximum Ratings table in the data sheet

The HB pin is rated at 118V

HS is rated at 105V

Regards

John

0 zoujiangyilang over 5 years ago in reply to John Griffin1

Genius 4560 points

Thank you

Power management

Power management forum

LM5035: LM5035 is used for 100V Vin power supply，Will the HO port be damaged？