Hi, Colleagues!
Just faced quite strange behavior of DRV2700 bost converter.
Set-up look like this:
- from +5V to +105 conversion
- 4.7uH coil/3 A;
- Output capacitor - 2 x 100n, 10R series resistor followed by 2.2uF;
- Input capacitor - 2.2uF;
I observed feedback loop stability issues causing low frequency oscillations on output voltage up to 5Vp-p, frequency about 70(Hz). During rising edge of cycle PWM is on and running at about 300-500(kHz), during off state PWM completely off.
Are there any ideas how to handle this state and what could be the reason!
Thanks in advance and regards, Jurijs
