TPS62737 Input peak current observed during low output current

Vijay Talikoti

Other Parts Discussed in Thread: TPS62737

During sleep time of the product, there are continuous peak currents (ripple currents) observed at input of TPS62737- Vin pin. During wake-up period ripple in the current are reduced to 1mA. Why there are high peaks during low current consumption.

over 7 years ago

0 JohnTucker over 7 years ago

TI__Guru**** 191445 points

Please include teh part number in the title of your post.

Thanks,

0 Vijay Talikoti over 7 years ago in reply to JohnTucker

Prodigy 40 points

TPS62737RGYR

0 JohnTucker over 7 years ago in reply to Vijay Talikoti

TI__Guru**** 191445 points

It needs to go into the post title. That way the appropriate support person can recognize and respond to your post. Otherwise it may go unread. I have corrected it for you.

0 Vijay Talikoti over 7 years ago in reply to JohnTucker

Prodigy 40 points

Below are the input current waveforms captured with only TPS62737 connected to a resistive load of 4.5kohm. R37 is remove and load mentioned in waveform are connected across C32

Here 4.5k ohm load represent sleep current of our product and we are observing 10mA peak currents due to which battery life is reducing. Let me know why these peaks are appearing at the input of Vin pin.

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TPS62737 Input peak current observed during low output current