TPS65131: With 5V input, it can output +15V, but can't output -15V?

Gust Zhang

Expert 5811 points

Part Number: TPS65131

With 5V input, it can output +15V, but can't output -15V? Input 3.3V, the application can output +15V and -15V.

over 4 years ago

0 Liaqat Khan over 4 years ago

TI__Mastermind 18550 points

Hi Gust,

Can you please send schematics of your design? I don't see why it should not work with 5V input supply but I will review your schematics to see if I can spot something.

Kind Regards,

Liaqat

0 Gust Zhang over 4 years ago in reply to Liaqat Khan

TI__Expert 5811 points

Hi Liaqat,

Thanks for your reply. I described the problem about TPS65131 and sent the pcb, schematics to your email. Thanks again for your support.

0 Liaqat Khan over 4 years ago in reply to Gust Zhang

TI__Mastermind 18550 points

Hi Gust,

Since you sent me e-mail with the schematics, I will close this thread and provide you a response via e-mail by tomorrow.

Kind Regards,

Liaqat

Power management

Power management forum

TPS65131: With 5V input, it can output +15V, but can't output -15V?