Advanced PWM controller FAN302UL significantly simplifies isolated power supply designs that require Constant Current (CC) regulation Of the output The output current is precisely estimated With information in the primary side Of the transformer and controlled with an internal compensation circuit, not only removing the output current sensing loss, but also eliminating external CC control ciralitry. A Green-Mode function With an extremely IOW operating current (200 uA) in Burst Mode rnaximizes light-load efficiency, enabling conformance to mrldwide Standby Mode efficiency guidelines. Integrated protections include two-level pulse-by-pulse current limit, Over-voltage Protection (OVP), brownout protection, and Over- Temperature Protection (OTP). Compared With a conventional approach using external control circuit in the secondary side for CC regulation; the FAN302UL reduces total cost, component count, size, and weight. While simultaneously increasing efficiency, productivity, and system reliability.
mWSaver Technology Provides Best-in-class Standby Power
Achieves CIO rnW, Far Below Energy Star's 5-Star Level (<30 mW).
Proprietary 500 V High-voltage JFET Startup Reduces Startup Resistor Loss
LOW Operation Current in Burst Mode: 350 uA Maximum
Constant-current (CC) Control without Secondary- Side Feedback Circuitry
Fixed PWM Frequency at 140 kHz With Frequency Hopping to Reduce EMI