Hello,
Constant off time sepic converters seem very easy to make stable.
Take the attached PWM dimmed, 6W, 12VIN, 85VOUT sepic led driver which stabilises easily whatever compensation components are used.
So surely, continuous current mode, constant off time sepic converters (or boosts or buck-boosts) don't have a right half plane zero?
(ltspice simulation also attached....here's your challenge....try to make it go unstable by varying the feedback components, within some reason...bet you wont be able to)
Constant off time sepic converters seem very easy to make stable.
Take the attached PWM dimmed, 6W, 12VIN, 85VOUT sepic led driver which stabilises easily whatever compensation components are used.
So surely, continuous current mode, constant off time sepic converters (or boosts or buck-boosts) don't have a right half plane zero?
(ltspice simulation also attached....here's your challenge....try to make it go unstable by varying the feedback components, within some reason...bet you wont be able to)