TPS53353: VDD supply power

Jeff YANG

Mastermind 6355 points

Part Number: TPS53353
Other Parts Discussed in Thread: TPS548B28

Tool/software:

Hi,

If my input voltage = 3.3V, seems need a boost converter to boost 3.3V to 5V or higher voltage to VDD?

Since VDD minimum need >4.5V. Or any better suggestion for this application?

Thanks!

Jeff

7 months ago

+1 Calan Elaya 7 months ago

TI__Expert 7105 points

Hi Jeff,

That's correct, you will need a minimum input voltage of 4.5V to VDD since this is the controller power supply input.

I would like to recommend the TPS548B28 since this is the successor device with the next generation control topology and is similar to the TPS53353. You may find this device better fit for your application.

TPS548B28 Datasheet: https://www.ti.com/lit/ds/symlink/tps548b28.pdf?ts=1718809517836&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPS548B28

Let me know if this helps.

Thanks,

Calan

Power management

Power management forum

TPS53353: VDD supply power