onsemi NCV12711 PWM controller

The NCV12711 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 andwithin 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.

 
Key features

• Wide input range (4 – 45 V in MSOP10)
• 100kHz to 1MHz
• 1 A / 2.8 A Source / Sink gate driver
• Output OVP fault interface

 
Additional features

• Current mode control with integrated slope compensation
• Single resistor programmable oscillator
• Input voltage UVLO with hysteresiser
• Several fault protections:
• Over-power protection
  • Overload protection with 30 ms overload timer
  • NTC-compatible fault interface for thermal protection
     
• Output OVP fault interface
• Adjustable soft−start on peak current and frequency

 
Applications

• Flyback and forward converters for electric vehicles
• DC/DC controller for auxiliary power