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TPS65253: functional block diagram information

user4861233

Prodigy 30 points

Part Number: TPS65253
Other Parts Discussed in Thread: TPS54394, , TPS65261, TPS65265

I would like to ask, what kind of topology the TPS65253 has. On the second page of the datasheet, I see only big green blocks, but it is not clear to me, how many MOSFETs there are. One per block, or two per block? In other words, can this converter sink, or only source current? I am looking for something similar to TPS54394 www.ti.com/.../tps54394 ?qgpn=tps54394 , but with higher (at least 12 V) output voltage.

Thanks,

Zoltán

over 7 years ago

0 Vental Mao over 7 years ago

TI__Expert 5745 points

The TPS65253 has two channels, and every channel(block) has two MOS. I don't understand the sink or source current.

What'd your application? What you want to design with TPS65253?

0 Zhao Ma over 7 years ago

TI__Genius 15135 points

Hi,

The TPS65253 adopts synchronous peak current mode topology, which means each channel has high-side and low side switch, they both can sink current.

The TPS65261 and TPS65265 are both 3 channels buck which can provide Vout > 12V application.

0 user4861233 over 7 years ago in reply to Zhao Ma

Prodigy 30 points

OK, that settles it. Thanks for the feedback!

0 user4861233 over 7 years ago in reply to Vental Mao

Prodigy 30 points

I need a source that can supply positive and negative voltages. I would like to set up the two buck converters in a full bridge configuration.