Description
The highly integrated FAN6791/3 dual PWM combination controller provides several features to enhance the performance of converters.

FEATUREs
High-Voltage Startup
Low Operating Current
Interleaved Stand-by PWM / Forward PWM Switching
Green Mode Stand-by PWM / Forward PWM
Linearly Decreasing Stand-by PWM Frequency to 20kHz
Remote On / Off
AC Brownout Protection
Forward PWM with Soft-Start
Frequency Hopping to Reduce EMI Emissions
Cycle-by-Cycle Current Limiting for Stand-by PWM / Forward PWM
Leading-Edge Blanking for Stand-by PWM / Forward PWM
Synchronized Slope Compensation for Stand-by PWM / Forward PWM
GATE Output Maximum Voltage Clamp
VDDOver-Voltage Protection (OVP)
VDDUnder-Voltage Lockout (UVLO)
Internal Open-Loop Protection for Stand-by PWM / Forward PWM
Constant Power Limit for Stand-by PWM / Forward PWM

APPLICATIONs
General-purpose switch-mode power supplies and flyback power converters, including:
PC-ATX Power Supplies