LM5026: How to realize secondary drive with pre bias function?

Jamie Tseng

Intellectual 2405 points

Part Number: LM5026
Other Parts Discussed in Thread: UCC2897A, UCC24610, LM5025

Hi Team,

How to realize secondary drive with pre bias function with LM5026?

Or do TI have any other solution that can realize secondary drive with pre bias function?

Thanks and best regards,

Jamie

over 5 years ago

0 John Griffin1 over 5 years ago

TI__Mastermind 34465 points

Hello Jamie,

This is similar to the question you asked in regard to the UCC2897A.
https://e2e.ti.com/support/power-management/f/196/p/886402/3278218#3278218

It is possible to use the LM5026 in combination with the UCC24610 and this will allow a pre bias startup of the power supply.
PMP20599 shows how to do this with the UCC2897A.
Unfortunately I do not have a reference design with the LM5026 but it is an easy matter to copy the secondary side of the PMP20599 and use with the LM5025 controller.

Regards

John

0 Jamie Tseng over 5 years ago in reply to John Griffin1

TI__Intellectual 2405 points

Hi John,

Got it! Thanks for your great support.

Regards,

Jamie

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LM5026: How to realize secondary drive with pre bias function?