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PMIC PF8100 doesn't start, V1P5A problem

Question asked by Igor Derzhavets on Apr 30, 2019
Latest reply on May 22, 2019 by Jose Alberto Reyes Morales

Hello,

My design has PF8100XXES PMIC  with i.MX8QXP SoC.

The PMIC doesn't start - LDO1 and LDO2 shows 0V, 4.0V is supplied  to VIN and LDO12IN.

When V1P5D rises to 1.5V the V1P5A rises to 1.5V and immediately falls to 0V (see attached picture V1P5D -yan, V1P5A - red).

 

The schematics attached as well.

 

Regards,

Igor

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