Description
The FAN1577A is a high-efficiency, voltage-mode, dualchannel, synchronous DC/DC PWM controller for two independent outputs. The two channels are operated out of phase. The internal reference voltage is trimmed to 0.7V±1.0%. It is connected to the error amplifier’s positive terminal for voltage feedback regulation.

Features
■ Integrates Two Sets of MOSFET Drivers
■ Two Independent PWM Controllers
■ Constant Frequency Operation: Free-running Fixed-Frequency Oscillator Programmable: 61kHz to 340kHz
■ Maximum Input Supply Voltage: 15V
■ Programmable Output as Low as 0.7V
■ Internal Error Amplifier Reference Voltage: 0.7V ±1.0%
■ Two Soft-Start / EN Function Pins
■ Programmable Over-Current Protection (OCP)
■ 30V HIGH Voltage Pin for Bootstrap Voltage
■ Output Over-Voltage Protection (OVP)
■ 20-Pin SOP

Applications
■ CPU and GPU Vcore Power Supply
■ Power Supply Requiring Two Independent Outputs