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TPS54061: Start-up time

Genius 12650 points
Part Number: TPS54061
Other Parts Discussed in Thread: LMR16006, LMR36510, LMR36520

Hello,

 

My customer is designing a product with TPS54061 and facing a problem for its start-up time.

Now the start-up time is about 10msec with VOUT=5V and COUT=10uF condition while the datasheet says that TYP start up time is 2.7msec.

When they tested with removing the load, the start-up time became faster. So they think this long start-up time would be due to the current limit at start-up.

 

Then they have 2 questions.

1. Do we have any pin-to-pin compatible device which current limit is higher than TPS54061?

2. Is there any way to reduce the start-up time?

 

Regards,

Oba