LP87702-Q1: How to set Buck switching frequency

Jimmy Lai

Expert 6845 points

Part Number: LP87702-Q1

Dear Team,

1. Could you guide us how to set buck switching frequency?

2. Could we use OTP memory to set buck switching frequency?

Thanks a lot!

Jimmy

over 3 years ago

0 Layne J over 3 years ago

TI__Genius 12735 points

Hi Jimmy,

This post has been assigned to the expert for this part however he is in the EU and will not be able to reply until tomorrow his time. In the mean time, I found the following E2E thread which discusses the same topic. In addition to this I will add that once the device has been powered on the switching frequency for the both the buck and the boost can be changed in the FREQ_SEL Register (Offset = 31h).

Please see Murthy's reply below for the correct answer.

Best regards,

Layne J

0 Krishnamurthy Hegde over 3 years ago

TI__Expert 8730 points

Hi,

Its switching frequency cannot be changed by customers and it is part of factory programming. It requires new device spin and part number.

Regards,

Murthy

Power management

Power management forum

LP87702-Q1: How to set Buck switching frequency