NCP12711 Datasheet | onsemi

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 k Hz to 1 MHz and integrates slope pensation 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 parator 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. The NCP12711 contains a suite of protection features including cycle- by- cycle peak- current limiting with smooth frequency increase and a timer- based overload protection. All protection features place the device into a low quiescent fault mode with a 1- s auto- recovery period to allow for system recovery if the fault condition is removed. mon General Features - Wide Vcc Input Range (4 - 45 V) - Internal 7.5- V Regulator - Current- Mode Control with Adjustable Slope pensation - 0% Duty Ratio Operation in No- Load Condition - Internal Over Power Protection - Single Resistor Programmable Oscillator - 100 k Hz to 1 MHz - Adjustable Soft- Start on Peak Current and Frequency - Programmable Input Voltage UVLO with Hysteresis - Shutdown Threshold for External Disable - Overload Protection with 30 ms Overload Timer - Internal Operational Amplifier - Fault Auto- recovery Mode with 1- s Auto- recovery Period - ±1 A Source / Sink Gate Driver Typical Applications - Single- ended Flyback and Forward Converters for Electric Vehicles - 4 - 45 V Input DC/DC Controller for Auxiliary Power MSOP10, 3x3 CASE 846AE MARKING DIAGRAM 10 P11x AYWG P11x x A Y W G = Specific Device Code...