LP8758-B0: LP8758-B0 / How to achieve better stability

S.Satoshi

Part Number: LP8758-B0

Hi,

I understand that LP8758-B0 has fixed internal compensation so it can't be adjust phase margin by using external compensation network. Then can you tell me how to achieve better stability? I guess that there may be best inductor value and output capacitor combination.

Best Regards,

Satoshi / Japan Disty

over 8 years ago

0 Krishnamurthy Hegde over 8 years ago

TI__Expert 8730 points

Hi,

I have assigned your request to responsible Applications Engineer and we will get back to you as soon as possible.

Regards,

Murthy

0 Tomi Koskela over 8 years ago

TI__Genius 11020 points

Hello,

Adding output capacitance will reduce the bandwidth and increase the phase margin. How much output capacitance you have at the moment?

Thanks.

Best Regards,
Tomi Koskela

0 S.Satoshi over 8 years ago in reply to Tomi Koskela

Guru 21685 points

Hi Tomi,

Thank you for your comment. So far my customer has been studied so they will design their system from now.

Best Regards,
Satoshi

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LP8758-B0: LP8758-B0 / How to achieve better stability