描述 Description

The FAN6756 is a next-generation Green Mode PWM controller with innovative mWSaver? technology, which dramatically reduces standby and no-load power consumption, enabling compliance with worldwide Standby Mode efficiency guidelines.

特性 Features

■ Single-Ended Topologies, such as Flyback and Forward Converters

■ mWSaver? Technology

- Achieves Low No-Load Power Consumption:

< 30 mW at 230 VAC (EMI Filter Loss Included)

- Eliminates X Capacitor Discharge Resistor Loss with AX-CAP? Technology

- Linearly Decreases Switching Frequency to 23 kHz

- Burst Mode Operation at Light-Load Condition

- Impedance Modulation in “Deep” Burst Mode

- Low Operating Current (450 μA) in Deep Burst Mode

- 500 V High-Voltage JFET Startup Circuit to Eliminate Startup Resistor Loss

■ Highly Integrated with Rich Features

- Proprietary Frequency Hopping to Reduce EMI

- High-Voltage Sampling to Detect Input Voltage

- Peak-Current-Mode Control with Slope Compensation

- Cycle-by-Cycle Current Limiting with Line Compensation

- Leading Edge Blanking (LEB)

- Built-In 7 ms Soft-Start

■ Advanced Protections

- Brown-in / Brownout Recovery

- Internal Overload / Open-Loop Protection (OLP)

- VDD Under-Voltage Lockout (UVLO)

- VDD Over-Voltage Protection (VDD OVP)

- Over-Temperature Protection (OTP)

- Current-Sense Short-Circuit Protection (SSCP)

Applications

Flyback power supplies that demand extremely low standby power consumption, such as:

■ Adapters for Notebooks, Printers, Game Consoles, etc.

■ Open-Frame SMPS for LCD TV, LCD Monitors, Printer Power, etc.