TPS563203: Power management forum

Qingze Han

Part Number: TPS563203
Other Parts Discussed in Thread: TPS563200,

I checked the old device like TPS563200, which has clear spec function description about OVP as below, but we didn’t find it in TPS563203’s datasheet.

over 1 year ago

0 Shuai Fan over 1 year ago

TI__Genius 13451 points

Hi Qingze!

This device doesn't have special OVP detection for feedback. Because it is ECO mode, when output higher than target, it will naturally turn off both HS and LS FET.

Shuai

+1 Qingze Han over 1 year ago in reply to Shuai Fan

TI__Prodigy 90 points

But in datasheet, Non-latch for OV, OT, and UVLO protection. This OV protection means what？ Can you tell me in ECO mode, why when output higher than target, it will naturally turn off both HS and LS FET.

0 Shuai Fan over 1 year ago in reply to Qingze Han

TI__Genius 13451 points

Because ECO has zero cross detection. Once FB higher than REF, high side will be turn off, as existing of ZC detection, LS will not turn on.

It is related to D-CAP control, so I say it is a nature OV.

+1 Qingze Han over 1 year ago in reply to Shuai Fan

TI__Prodigy 90 points

I don't know much about D-CAP, can you share some information links, can you briefly talk about the working method of the D-CAP structure on the BUCK circuit, for example, when the upper and lower tubes are turned off, how does FB affect the conduction of the tubes?

0 Shuai Fan over 1 year ago in reply to Qingze Han

TI__Genius 13451 points

Will explain yo you by webex.

Shuai