User Activity

I want to use two SDADC_HandleTypeDef variables in sigma-delta ADC-s differential mode triggered by timer TIM3 for example?
I try to get by PWM ( and with DC->DC converter)  regulated output voltage from 0.0 to 2.5 volts ( not currently minimal voltage 0.9 V )?
Currently I've got on DC->DC by PWM output voltage from 0.9 to 2.5 volt but I need a regulatable voltage by PWM from 0 to 2.5 volts.