TPS62135: Heat Isssues faced for TPS62135

Pang

Part Number: TPS62135
Other Parts Discussed in Thread: TPS56339

Hi,

Kindly please help to advise as I am currently facing high heat issues during switching on the TPS62135, the temperature rises continuously until it cuts off and it's around 120degC. Below are the operating requirements.

Vin: 13.5V

Vout: (application is USB type C charger)

12V 1.5A, 9V 2.0A, 5V 3.0A

Please help to advise on the design improvement which is needed to bring down the heat.

over 5 years ago

0 JohnTucker over 5 years ago

TI__Guru**** 191445 points

Electrobud,

You state Vout is 5, 9 or 12 V. However your resistor FB divider yields 5.13 V as the output. I do not see an output capacitor on your schematic. Can you provide it?

There is a duplicate post with the TPS56339 in the title, but the schematic is for TPS62135. Should I delete that post?

0 Pang over 5 years ago

Expert 2415 points

John,

Yes you may close the duplicate thread. Can you provide me your email so that I can share you full schematic.

0 JohnTucker over 5 years ago in reply to Pang

TI__Guru**** 191445 points

Electrobud,

j(dash)tucker(at)ti(dot)com

Since we are taking this off line, I will close this thread.

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TPS62135: Heat Isssues faced for TPS62135