TPS546C20A: parallel 2 TPS546C20A

Andy_Lin

Part Number: TPS546C20A
Other Parts Discussed in Thread: TPS546D24A

Hi Team,

I would like to have a quick check on TPS546C20A , per d/s says, this device can be paralleled together to provide up to 70-A load.

for the 70A load , it means continue load current , not peak current , is that correct?

over 5 years ago

0 Peter James Miller over 5 years ago

TI__Guru 56795 points

Andy_Lin

The TPS546C20A is rated for 35A continuous current. It's Peak current is limited by the programmable range of its current limit functions. However, as with any converter, the continuous thermal current rating may also be limited by the available air-flow, ambient air-temperature and the device's safe operating area due to the resulting die temperature.

See figures 20, 21, and 22 on page 13 of the datasheet for more guidance: http://www.ti.com/lit/ds/symlink/tps546c20a.pdf#page=13

If you need more current capability than the TPS546C20A can provide, I would suggest reviewing the TPS546D24A, a 40A Integrated FET converter that also has PMBus and is stackable upto 4 devices. http://www.ti.com/product/tps546d24a

0 Andy_Lin over 5 years ago in reply to Peter James Miller

TI__Intellectual 2590 points

Hi Peter ,

thanks for your detail feedback.

customer would like to used 2 of TPS546C20A in parallel , and provide around 45 A(continuous) for their chips as supply, that's why it has this question .

Looks its OK to used it this way , and the current limit can set through PMbus , I will let customer know the comment and see if there's more questions to check.

thanks again!!

Andy

0 Peter James Miller over 5 years ago in reply to Andy_Lin

TI__Guru 56795 points

You are most welcome Andy_Lin

I am glad that I could help.

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TPS546C20A: parallel 2 TPS546C20A