Solution for non-isolation switching Regulator Solution

Jamie Tseng

Intellectual 2405 points

Other Parts Discussed in Thread: LM5145, UC2572

Hi Teams,

My customer wants to achieve Vin=12V, Vout=-12V, Load=4A, non-isolation switching Regulator Solution.

Is there any solution to achieve these specs?

Thanks!

Jamie

over 5 years ago

0 Youhao Xi over 5 years ago

TI__Guru* 78270 points

Hi Jamie,

This can be done with a buck controller in inverting buck-boost configuration, and you can take a look at the LM5145 or similar part, or you can use our inverting controller UC2572. If you consider the buck controller, you should create a new thread such that it can be directed to the right engineer.

Thanks,

Youhao Xi, Applications Engineering

0 Jamie Tseng over 5 years ago in reply to Youhao Xi

TI__Intellectual 2405 points

Hi Youhao,

1. Could you show how LM5145 can achieve the specs?

2. Could UC2572 reach 48W?

Thanks!

Best regards,

Jamie

0 Youhao Xi over 5 years ago in reply to Jamie Tseng

TI__Guru* 78270 points

Hi Jamie,

Please create a new post with LM5145 in the title line, then your question will be send to the right engineer.

Regarding UC2527, the driver is 0.5A peak seems marginal to me, but you can use external driver.

Thanks,

Youhao

0 Jamie Tseng over 5 years ago in reply to Youhao Xi

TI__Intellectual 2405 points

Hi Youhao,

Got it.

Thanks!

Best regards,

Jamie

Power management

Power management forum

Solution for non-isolation switching Regulator Solution