UCC5871-Q1: the meaning of PRI_RDY and SEC_RDY

Jay wang

Intellectual 1981 points

Part Number: UCC5871-Q1

hi expert

how can i understand the meaning/function of PRI_RDY(STATUS2 Register) and SEC_RDY(STATUS4 Register)

over 1 year ago

0 Daniel Norwood over 1 year ago

TI__Expert 5801 points

Hi Jay,

The PRI_RDY bit goes high when the primary side of the driver has a valid power supply and has successfully completed power up BIST.

The SEC_RDY bit goes high when the secondary side of the driver has a valid power supply and has successfully completed power up BIST and established communication with the primary side.

These bits should not be used as fault indication, but only to confirm that power up is completed.

Regards,

Daniel

0 Jay wang over 1 year ago in reply to Daniel Norwood

TI__Intellectual 1981 points

ok got it

Power management

Power management forum

UCC5871-Q1: the meaning of PRI_RDY and SEC_RDY