TPS62130A: The TPS62130a cannot be started and there have no output when the load is 2A

Hope Chen

Part Number: TPS62130A
Other Parts Discussed in Thread: TPS62135

INPUT:5-10V

OUTPUT:3.3V/2.5A

Question:

The TPS62130a cannot be started and there have no output when the load is 2A, the duty cycle is very small . But after the output is be setup, the load can change form 0-2.5A,the work of tps26130a is normal

the sch is below

over 8 years ago

0 Chris Glaser over 8 years ago

TI__Guru**** 150910 points

I believe the very next thread under yours in this forum gives the likely reason.

Is this load your real system or an electronic load?

As well, the TPS62135/6 are newer devices without this reduced current limit.

0 Hope Chen over 8 years ago in reply to Chris Glaser

Expert 1030 points

electronic load

0 Chris Glaser over 8 years ago in reply to Hope Chen

TI__Guru**** 150910 points

Yes, these frequently cause issues at start-up since they do not behave like a real load would. Retest with either resistors or your real system load (MCU, etc.)

Power management

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TPS62130A: The TPS62130a cannot be started and there have no output when the load is 2A