Thermal shutdown for UCC28600

Knighty Nimp

Other Parts Discussed in Thread: UCC28600, UCC28600EVM-65W

Hello All,

Do you have any recomend to shutdown UCC28600 by NTC for over temperature protection? I draw schematic but not sure it's suitable methode to shutdown this IC.

UCC28600 shutdown.pptx

Thanks

Knighty

over 10 years ago

0 John Griffin1 over 10 years ago

TI__Mastermind 34465 points

Yes your idea should work. An over temperature will discharge the SS pin and cause a fault shutdown of the UCC28600

0 Knighty Nimp over 10 years ago in reply to John Griffin1

Expert 1260 points

John,

Thanks, I have another question, refer to UCC28600EVM-65W, the output 2 design for which voltage? 5V output rail?

Knighty

0 John Griffin1 over 10 years ago in reply to Knighty Nimp

TI__Mastermind 34465 points

G065022LF r 0.pdfYes it is a 5V output . The attached transformer spec sheet will help

0 Knighty Nimp over 10 years ago in reply to John Griffin1

Expert 1260 points

John,

We have change the circuit to shutdown the IC controller, circuit as attached, the trip point is 105 degree C.DO you see any risk for this external cuircuitry?

SHUT DOWN UCC28600.pptxKnighty

0 John Griffin1 over 10 years ago in reply to Knighty Nimp

TI__Mastermind 34465 points

Hi Knighty,

Yes that looks like it will work.

Regards,

John

Power management

Power management forum

Thermal shutdown for UCC28600