NCP1565
Highly Integrated Dual-Mode Active Clamp PWM Controller
The NCP1565 is a highly integrated dual−mode active−cl...
NCP1565
Highly Integrated Dual-Mode Active Clamp PWM Controller
The NCP1565 is a highly integrated dual−mode active−clamp PWM controller targeting next−generation high−density, high−performance and small to medium power level isolated dc−dc converters for use in telecom and datacom industries. It can be configured in either
voltage mode control with input
voltage feed−forward or peak current mode control. Peak current mode control may be implemented with input
voltage feed forward as well. Adjustable adaptive overlap time optimizes system efficiency based on input
voltage and load conditions.
This controller integrates all the necessary control and protection functions to implement an isolated active clamp forward or asymmetric half−bridge converter. It integrates a high−
voltage startup bias regulator. The NCP1565 has a line under
voltage detector, cycle−by−cycle current limiting, line
voltage dependent maximum duty ratio limit, and programmable overtemperature p...