描述 Description

The NCP12711 is a fixed?frequency peak?current?mode PWM controller containing all of the features necessary for implementing single?ended power converter topologies. The device operates from 4 V to 45 V without auxiliary winding and within its thermal capabilities. The controller contains a programmable oscillator capable of operating from 100 kHz to 1 MHz and integrates slope compensation to prevent subharmonic oscillations. The controller includes a programmable soft?start, input voltage UVLO protection, and an over?power protection (OPP) circuit which limits the total power capability of the circuit as the input voltage increases. The UVLO pin also features a shutdown comparator which allows for an external signal to disable switching and brings the controller into a low quiescent state. An onboard op?amp allows the implementation of primary?side regulated converters or non?isolated dc?dc converters.

特性 Features

應(yīng)用 Application