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MMPF0100F0EP SW1A/B buck converter output Issue

Question asked by Vinod Kumar on Aug 7, 2014
Latest reply on Jun 25, 2015 by Tamilarasan E

Hi,

     We used MMPF0100F0EP PMIC for our design.

     we referred Sabre SD board for our design.

     I have attached schematic.

     As per MMPF0100F0EP datasheet, SW1A/B output should be 1.375V. But we are getting only 0.04V.(In SW1C, output is proper 1.375V. )

     In Vgen4 LDO output, we supposed to get 1.8V but we are getting 2.176V.

     other output levels are normal.

     please guide us.

 

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