TPS23754: Maintain Power Signature

Julian Chen

Expert 2550 points

Part Number: TPS23754

Dear E2E Member,

Could you kindly let me know the maintain power signature behavior?

Please refer the picture as below,

When does MPS start to detect? VOUT ready or after inrush?

If MPS start to detect when after inrush, does the GREEN PERIOD need to over 10mA at all?

Thanks!

over 7 years ago

0 Thomas Amlee over 7 years ago

TI__Genius 9230 points

Hi Julian,

MPS pulses are generated when the operating voltage (~48V) is applied across VDD-VSS. This would be shortly before inrush where it says "PI Powered", so yes: 10mA would need to be detected during the green period.

Thanks,
Tom

0 Julian Chen over 7 years ago in reply to Thomas Amlee

Expert 2550 points

Hi Tom,

Thanks for your reply.

Our customer have a question that in GREEN PERIOD, the current will under 10mA lead to shutdown at this moment.

How can I modify the circuit to increase the current in green period?

Thanks!

Power management

Power management forum

TPS23754: Maintain Power Signature