TPS650250-Q1: Power up Sequencing

Part Number: TPS650250-Q1
Other Parts Discussed in Thread: TPS650250

Hi team,

I could found Power-up sequencing in this datasheet. the sequence is controlled by EN pins for each DCDCs. However, I couldn't find power good pins.

would you please advice me how we make a sequence only by EN pins?

over 6 years ago

0 Nick Jakse49 over 6 years ago

TI__Expert 4155 points

NY,

Typically without PGOOD pins to sequence the rails, a power sequencer or MCU would be used to sequence the rails.

0 NY over 6 years ago in reply to Nick Jakse49

TI__Expert 3040 points

Hi, Thanks clarification.

regards, ny

0 Brian Berner over 6 years ago in reply to NY

TI__Mastermind 30280 points

NY,

Power sequencing can also be achieved with RC delays and resistor dividers, as you can see in this Application Note for powering the AM335x processor with TPS650250 (www.ti.com/.../slvu731)

Power management

Power management forum

TPS650250-Q1: Power up Sequencing