The IR3640M is a synchronous buck controller IC manufactured by International Rectifier (now Infineon Technologies). It is designed for high-performance synchronous buck converters used in a variety of power management applications. This controller provides precise voltage regulation and efficient power conversion.

Applications

• Motherboards
• Graphics cards
• Servers
• Networking equipment
• Point-of-load (POL) converters

Features

• Synchronous rectification: Improves efficiency by reducing power loss.
• Voltage mode control: Provides stable and accurate voltage regulation.
• Adjustable switching frequency: Allows optimization for different applications.
• Overcurrent protection: Protects the converter from damage due to excessive current.
• Undervoltage lockout (UVLO): Prevents operation with insufficient input voltage.
• Soft-start: Limits inrush current during startup.

Benefits

• High efficiency power conversion.
• Precise voltage regulation.
• Robust protection features.
• Flexible design options with adjustable switching frequency.
• Simplified system design with integrated control functions.

Additional Details

The IR3640M uses a voltage mode control scheme, enabling stable and accurate regulation. It typically supports a wide input voltage range and provides an adjustable output voltage. The switching frequency can be adjusted to optimize efficiency and transient response. The device includes comprehensive protection features to ensure reliable operation under various load conditions. Consult the Infineon datasheet for detailed electrical characteristics, pinout information, and application guidelines.