UCC21750: DRIVER UCC21750 WITH CLAMP PIN

UPENDER GUPTA

Part Number: UCC21750

Tool/software:

DEAR SIR,

I AM USING GATE RESISTNACE AT IGBT MODULE WITH GATE PCB AND I AM SORTING PIN OUTH , OUTL WITH CLAMP BEFORE GATE RESISTANCE IT IS OK PLEASE REPLY ENCLOSED SCHAMTIC Driver-Vertical-VP006848-UCC21750_R001.pdf

5 months ago

0 UPENDER GUPTA 5 months ago

Prodigy 140 points

8750.Driver-Vertical-VP006848-UCC21750_R001.pdf

PLEASE CHECK THIS PDF FOR DRIVER HERE NOT USE CLAMP PIN IN SAME SCHMATIC CAN SORT CLMAP PIN WITH OUTH & OUTL ??

0 Sean Cashin 5 months ago in reply to UPENDER GUPTA

TI__Mastermind 22736 points

Hi Upender,

There is an internal FET between CLAMPI and VEE. If you short them together, this FET will have no effect. However, this pin is designed to improve the Miller injection immunity of the circuit, and I recommend that you attache CLAMPI to OUTL, not VEE.

Best regards,

Sean

0 Sasikala Thangam 5 months ago in reply to Sean Cashin

TI__Expert 8055 points

It is recommended to connect CLMPI to GATE (least resistive path to pull down the gate effectively to Low) when INP=L to overcome the miller injection behavior.

Thanks

Sasi

0 UPENDER GUPTA 5 months ago in reply to Sean Cashin

Prodigy 140 points

Dear sir ,

Can short OUTH , OUTL & CLAMP PIN SHORT before gate resistance because we use Gate pcb directly IGBT module ,

3527.Driver-Vertical-VP006848-UCC21750_R001.pdf

0 Sean Cashin 5 months ago in reply to UPENDER GUPTA

TI__Mastermind 22736 points

Hi Upender,

Yes, this second circuit will have better Miller injection immunity than the first circuit.

Best regards,

Sean

Power management

Power management forum

UCC21750: DRIVER UCC21750 WITH CLAMP PIN