The IR3566AMTRP is a multiphase synchronous buck controller manufactured by International Rectifier (now Infineon Technologies). It is designed for high-performance voltage regulation in demanding applications such as server CPUs, GPUs, and memory power supplies. It provides precise control and high efficiency, making it ideal for modern computing systems.

Applications

• Server CPUs: Used for powering Intel and AMD server processors.
• Desktop GPUs: Employed in high-end graphics cards to provide stable and efficient power.
• Memory Power Supplies: Integrated into DDR memory power regulation circuits.
• ASIC Power: Used to provide voltage regulation for custom ASICs in various applications.
• FPGA Power: Applied in Field Programmable Gate Array (FPGA) power supplies.

Features

• Multiphase Operation: Supports multiple phases for improved transient response and current handling.
• Synchronous Rectification: Utilizes synchronous MOSFETs for higher efficiency.
• Voltage Positioning: Provides voltage positioning to optimize transient response.
• Overcurrent Protection: Protects the power supply from overcurrent conditions.
• Remote Sensing: Compensates for voltage drops in the power delivery network.

Benefits

• High Efficiency: Synchronous rectification minimizes power losses and improves efficiency.
• Precise Voltage Regulation: Provides a stable and accurate output voltage.
• Fast Transient Response: Multiphase operation improves transient response to load changes.
• Robust Protection: Overcurrent protection ensures reliable operation.
• Improved System Performance: Stable power supply contributes to overall system performance.

Additional Details

The IR3566AMTRP requires external MOSFETs and inductors to complete the power supply circuit. The selection of these components is critical for achieving optimal performance. The controller supports various protection features, including overvoltage protection and undervoltage protection. It also includes a power good signal that indicates when the output voltage is within the specified range. Proper layout and grounding techniques are essential for minimizing noise and ensuring stable operation. The device is typically surface-mounted using standard SMT soldering techniques.