TPS62732 and 3.2V on output

MatthewFirst

Other Parts Discussed in Thread: TPS62730, TPS62732, CC2541

Hello,

i've changed the title of post. My problem is with TPS62730DRYR rigth now. I powered TPS62730 3.3V and i got 3.2V on output. Here's my scheme: Vcc is input voltage and CCVCC is output voltage.

over 9 years ago

0 JohnTucker over 9 years ago

TI__Guru**** 191445 points

Can you post your schematic and operating conditions?

0 Chris Glaser over 9 years ago

TI__Guru*** 143680 points

How is pin 5 connected? If it is low, you will see Vin on the output minus voltage drops in the system. Connect it high to enable the buck converter.

0 MatthewFirst over 9 years ago in reply to Chris Glaser

Intellectual 775 points

Hello,

i made mistake in my first post. I'm using TPS62730 not TPS62732. I already change it.

Pin 5 is connected to CC2541 chip. Right now it's not installed on board because i want to make sure that everything works. So the pin you are asking for is connected to low. I will try to see what will happen when i give high on pin 5.

0 MatthewFirst over 9 years ago in reply to Chris Glaser

Intellectual 775 points

Hi, problem still appears no matter if i connect pin 5 high or low, i still got input voltage on output..

0 Chris Glaser over 9 years ago in reply to MatthewFirst

TI__Guru*** 143680 points

Please post a scope capture of Vin, Vout, SW, and pin 5 at around 10 usec/div.

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TPS62732 and 3.2V on output