hello sir
we are using Tps70148 dual output regulator of 3.3v vout1 and 1.5v vout2 for cmos sensor (OV7962) based camera application,Here problem is our cmos sensor have four input rail of 3.3v and one 1.5 core voltage so here we utilize this single 3.3v output of Tps70148 to those four separate inputs of cmos sensor ,
In no load condition the regulator IC maintain 3.27v in vout1 measured in multimeter and 1.49 in vout2 but we connect to those four output it regulate 3.43v in vout1 and 2.22v in vout2 this the problem , we don't know why it regulate above than determined
But we input the sensor as different rail have separate decoupling cap as recommenced by cmos vendor
for your reference here i attach our schematic(Please visit the site to view this file)
in our schematic there is one controller (CY7C68013) we check with cmos sensor only , we use the controller as DNI so pls consider this
Thank you
vinoth pandiyan