TPS54360: How to creat dual power from (Non isolated Flybuck may be) from any buck.

Vishal Kakade

Part Number: TPS54360
Other Parts Discussed in Thread: PMP10088, TIDA-00199

Hello,

My question is regarding PMP10088 reference design. I want to generate +-15 and +-7.5 volts for biasing opamp from this reference design. But couldn't get much info in the datasheet that how to create this flybuck or whatever topology.

Can you suggest me how to design such power supplies?

Regards

Vishal Kakade

R&D Engineer

Logic-Fruit technologies.

over 6 years ago

0 Samuel Jaffe over 6 years ago

TI__Mastermind 25590 points

Vishal,

We have lots of good content on how to design a Fly-Buck. Here are a few (1, 2, 3) but you can search more on google or ti.com.

In general, though, you can add more windings to get more output voltages. I've seen success with up to 4 isolated outputs (TIDA-00199 for example). Just add more windings. Or alternatively you could have +30VOUT and +15VOUT then divide them in half on the secondary side depending on your specs.

-Sam

0 Vishal Kakade over 6 years ago in reply to Samuel Jaffe

Intellectual 930 points

Hello Samuel,

Does TI have any dual output regulators (+-15, +-7.5)? for opamp biasing? Please suggest some part numbers. as I don't wanna use two different regulator for positive and negative power rails.

Regards

Vishal kakade

0 Samuel Jaffe over 6 years ago in reply to Vishal Kakade

TI__Mastermind 25590 points

Vishal,

Here's a good post about splitting supplies and it has some part numbers.

-Sam

Power management

Power management forum

TPS54360: How to creat dual power from (Non isolated Flybuck may be) from any buck.