UCC24630: Enable pin

HS FAE Germany

Part Number: UCC24630
Other Parts Discussed in Thread: UCC28730, UCC24610, UCC24650, , UCC24636

Hello,
customer wants to use the UCC28730+UCC24650 and the UCC24630. I saw that the UCC24610 has an enable pin which can be connected to the the UCC24650 but the UCC24630 hasn't one. Is there a possibility to switch off the UCC24630 completely in case of zero-load?

Regards, Holger

over 7 years ago

0 Bernard Keogh over 7 years ago

TI__Genius 9130 points

HS

For the UCC24630, the light-load enable/disable is a built-in feature of the IC. It automatically goes to light-load mode, and disables the SR gate drive, based on the measured switching frequency.

This is already explained in the datasheet on page 20.

Thanks,
Bernard

0 John Stevens over 7 years ago in reply to Bernard Keogh

TI__Expert 7395 points

Holger,

Additionally I recommend using ucc24636 instead of ucc24630 as it is more optimized for DCM. Ucc24630 will still work though.

Regards

John

Power management

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UCC24630: Enable pin