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

over 1 year ago

0 UPENDER GUPTA over 1 year 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 over 1 year ago in reply to UPENDER GUPTA

TI__Mastermind 23226 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 over 1 year ago in reply to Sean Cashin

TI__Expert 8435 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 over 1 year 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 over 1 year ago in reply to UPENDER GUPTA

TI__Mastermind 23226 points

Hi Upender,

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

Best regards,

Sean

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UCC21750: DRIVER UCC21750 WITH CLAMP PIN