T
treez
Guest
Hello,
We are using L6566B PWM controller for an offline flyback.
L6566B DATASHEET
https://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00167474.pdf
Do you know if the VCC pin voltage is "self limited" by an internal 23V zener?....the datasheet doesn't say.
(we need to know as the vcc pin is supplied by an unregulated bias winding which "wanders" high and low due to poor coupling.)
We are using L6566B PWM controller for an offline flyback.
L6566B DATASHEET
https://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00167474.pdf
Do you know if the VCC pin voltage is "self limited" by an internal 23V zener?....the datasheet doesn't say.
(we need to know as the vcc pin is supplied by an unregulated bias winding which "wanders" high and low due to poor coupling.)