Product Summary

The FAN6754MR is a highly integrated controller that provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to continuously decrease the switching frequency under light-load conditions. The applications of the FAN6754MR are General-purpose switch-mode power supplies and flyback power converters.

Parametrics

FAN6754MR absolute maximum ratings: (1)VVDD DC Supply Voltage: 30 V; (2)VFB FB Pin Input Voltage: -0.3 to 7.0 V; (3)VSENSE SENSE Pin Input Voltage: -0.3 to 7.0 V; (4)VRT RT Pin Input Voltage: -0.3 to 7.0 V; (5)VHV HV Pin Input Voltage: 500 V; (6)PD Power Dissipation: 400 mW; (7)θJA Thermal Resistance (Junction-to-Air): 141℃/W; (8)TJ Operating Junction Temperature: -40 to +125℃; (9)TSTG Storage Temperature Range: -55 to +150℃; (10)TL Lead Temperature (Wave Soldering or IR, 10 Seconds): +260℃.

Features

FAN6754MR features: (1)High-Voltage Startup; (2)AC Input Brownout Protection with Hysteresis; (3)Low Operating Current: 1.7mA; (4)Linearly Decreasing PWM Frequency to 22KHz; (5)Frequency Hopping to Reduce EMI Emission; (6)Fixed PWM Frequency: 65KHz; (7)Peak-Current-Mode Control; (8)Cycle-by-Cycle Current Limiting; (9)Leading-Edge Blanking (LEB); (10)Internal Open-Loop Protection; (11)GATE Output Maximum Voltage Clamp: 13V; (12)VDD Under-Voltage Lockout (UVLO); (13)VDD Over-Voltage Protection (OVP); (14)Programmable Over-Temperature Protection (OTP); (15)Internal Latch Circuit (OVP, OTP); (16)Open-Loop Protection (OLP); Restart for MR, Latch for ML; (17)Built-in 8ms Soft-Start Function; (18)Constant Power Limit (Full AC Input Range); (19)Internal OTP Sensor with Hysteresis.

Diagrams

FAN6754MR block diagram

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