TPS650830: TPS650830 power on issue

user6216917

Part Number: TPS650830

Hi,

I use TPS650830 as power solution.

LDO3V, LDO5V, VREF1V25 ramp up ,V3P3A_RTC's power level is 3.06V.

ENVR3 =3.3V, Vin=8.16V, VPROGOTP =5V

but VR3 is not output.

what's problem? and What's OTP load? and need write register from I2C?

0 Chris Sterzik over 5 years ago

Hello,

Do you also see any activity on the PWRGD signals?

Regards,

Chris

0 user6216917 over 5 years ago in reply to Chris Sterzik

Hi，

3V/5V PG turn in high level about 10ms , and turn into low.

0 Chris Sterzik over 5 years ago in reply to user6216917

I will contact you via message to obtain schematics.

Regards,

Chris

0 user6216917 over 5 years ago in reply to Chris Sterzik

Hi,

AC_OK must pull to +LDO3V.

And If TPS650830 use in Tigerlake UP4 which not need VR1(V1.0A), VR1 can be floating?

Or have solution for Tigerlake UP4?

0 Chris Sterzik over 5 years ago in reply to user6216917

Hello,

I do not believe another solution for TigerLake UP4 is publicly available. If the VR1 is not going to be used, then do not enable.

Regards,

Chris

Power management forum