UCC24624: UCC24624 question about VD1 pin and VD2pin resistance?

Bob Lee62837

Part Number: UCC24624

Dear support member,

My customer used UCC24624.

I have a question.

(DataSheet)
Checking REV.B in the UCC24624 data sheet, resistors R7 (1KΩ) and R (1KΩ) are added to pin 4 (VD1) and pin 6 (VD2) in Fig21.

The previous data sheet REV.A did not have this resistance.

(Question）
Q1
What is the reason for adding this resistor?

Q2
If without this resistance,
What problem happen?
Does IC have any problems?

Best regard.
Bob Lee.

0 Mike O' over 6 years ago

Q1: It was discovered that without this resistor noise could falsely turn on and off the gate drivers.

Q2: If these resistors are not use the gate drivers may falsely be triggered.

Regards,

0 Bob Lee62837 over 6 years ago in reply to Mike O'

Dear Mike O',

Thank you very much for reply.

I reply my customer your answer.
I will feedback situation.

Best regard.
Bob Lee.

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