TPS53355 power sequence

Ryuji

Guru 20090 points

Other Parts Discussed in Thread: TPS53355

Hello,

Are there power sequence requirement for VDD/Vin of TPS53355?
We are using Vin=3.3V and Vdd=5V.
I believe that there is no sequence requiremt but please let me confirm.

Best Regards,
Ryuji Asaka

over 10 years ago

0 Ryuji over 10 years ago

Guru 20090 points

Hello team,

Could I have the reply please?

Best Regards,
Ryuji Asaka

0 Mingyue Zhao over 10 years ago

TI__Prodigy 750 points

Asaka San,

It should be fine. where is your EN pin connected?

Thanks

Mingyue

0 Ryuji over 10 years ago in reply to Mingyue Zhao

Guru 20090 points

Mingyue san,

EN pin is connected to VIN via RC filter, or Power Good output from other TPS53355.
Are there any concerning about EN pin connection?

Best Regards,
Ryuji Asaka

0 Mingyue Zhao over 10 years ago in reply to Ryuji

TI__Prodigy 750 points

Hi Ryuji San,

It's fine, no concern, just want to make sure EN is high when VDD/VIN are there.

Mingyue

0 Ryuji over 10 years ago in reply to Mingyue Zhao

Guru 20090 points

Hello Mingyue san,

Thank you for the reply.
I think that EN sholud be asserted high for operation.

Best Regards,
Ryuji Asaka

Power management

Power management forum

TPS53355 power sequence