ML4824CS1 Power Factor Correction (PFC) and PWM Controller Combo IC SOP16W

Description

ML4824CS1 Power Factor Correction (PFC) and PWM Controller Combo IC SOP16W

The ML4824CS1 is a Power Factor Correction (PFC) and PWM Controller Combo IC from Microsemi (formerly Micro Linear). It integrates both a PFC controller and a PWM controller in a single chip, making it suitable for high-efficiency power supplies.

Key Specifications of ML4824CS1

General Information

• Manufacturer: Microsemi (now part of Microchip)

• Package: SOIC-16 (CS1)

• Type: PFC + PWM Combo Controller

• Operating Temperature: -40°C to +85°C

Input & Power Supply

• VCC Supply Voltage (PFC & PWM): 10V to 20V (recommended)

• Startup Voltage: ~12V (typical)

• UVLO (Undervoltage Lockout): ~9V (turn-off), ~12V (turn-on)

PFC (Power Factor Correction) Section

• PFC Switching Frequency: Adjustable (typically 50kHz to 250kHz)

• PFC Output Voltage: Adjustable (typically 380V to 400V for universal input)

• Maximum Duty Cycle: ~95%

• Peak Current Limiting: Yes (via external sense resistor)

• Average Current Mode Control

PWM (Pulse-Width Modulation) Section

• PWM Switching Frequency: Adjustable (independent of PFC, typically 50kHz to 500kHz)

• Duty Cycle Range: 0% to 50% (for forward converters)

• Soft-Start Control: Yes

• Synchronization Capability: Can sync to external clock

Protection Features

• Overvoltage Protection (OVP) – For PFC output

• Overcurrent Protection (OCP) – For both PFC & PWM

• Undervoltage Lockout (UVLO) – Prevents operation at low VCC

Pin Configuration (SOIC-16)

Typical Applications

• AC/DC Power Supplies (with PFC)

• Server & Telecom Power Systems

• Industrial SMPS (Switched-Mode Power Supplies)

• LED Drivers (High-Power)

Datasheet Reference

For full details, check the ML4824 Datasheet (Microsemi/Microchip).