UCC28951: efficiency curve, compared with UCC28950

Hiroshi Doi35

Expert 2845 points

Part Number: UCC28951
Other Parts Discussed in Thread: UCC28950, UCC28950EVM-442

Hi All,

Customer requested me UCC28951 efficiency curve, compared with UCC28950.

It contains 5% of full load.

If improvements are big, I will start recommendation.

over 6 years ago

0 Colin Gillmor over 6 years ago

TI__Mastermind 25570 points

Hello Doi-san

There will be no difference in the efficiency curves of a power stage controlled by a UCC28951 and the same power stage controlled by a UCC28950. The UCC28951 is a better choice because it has been designed specifically for applications that may have to operate at maximum duty cycles while in overload conditions and it is a 100% drop in replacement for the UCC28950. http://www.ti.com/lit/an/slua853/slua853.pdf

The user guide for the UCC28950EVM-442 includes some typical efficiency curves http://www.ti.com/lit/ug/sluu421a/sluu421a.pdf

I would recommend that the user choose the UCC28951 device -

Regards

Colin

Power management

Power management forum

UCC28951: efficiency curve, compared with UCC28950