The ICL6520CBZ is a multi-phase PWM controller manufactured by Intersil Corporation. It is designed to provide high-performance voltage regulation for microprocessors and other high-current applications. The controller supports multiple phases to reduce output ripple and improve transient response. It's commonly used in voltage regulator modules (VRMs) for desktop PCs, servers, and workstations.

Applications

• Desktop Computers: Used in voltage regulator modules (VRMs) for CPU power supplies.
• Servers: Employed in server power supplies to provide stable and efficient power delivery to processors and memory.
• Workstations: Found in workstation power supplies for regulating voltage to high-performance CPUs and GPUs.
• Graphics Cards: Integrated into graphics card power supplies for voltage regulation of GPUs and memory.
• High-Current Power Supplies: Used in various high-current power supply designs for efficient voltage regulation.

Features

• Multi-Phase Operation: Supports multiple phases to reduce output ripple and improve transient response.
• Adaptive Voltage Positioning (AVP): Optimizes output voltage based on load current to improve efficiency.
• Over-Current Protection (OCP): Protects the power supply from over-current conditions.
• Over-Voltage Protection (OVP): Protects the load from over-voltage conditions.
• Under-Voltage Protection (UVP): Protects the load from under-voltage conditions.
• Remote Sensing: Compensates for voltage drops across PCB traces.

Benefits

• High Performance: Multi-phase operation and AVP provide excellent voltage regulation.
• Enhanced Protection: OCP, OVP, and UVP protect the power supply and load from damage.
• Improved Efficiency: AVP optimizes output voltage to reduce power losses.
• Reliable Operation: Designed for stable and reliable performance in demanding applications.

Additional Details

The ICL6520CBZ typically operates from a supply voltage of 5V or 12V. It generates PWM signals to drive external MOSFETs. The adaptive voltage positioning feature adjusts the output voltage based on the load current. The over-current, over-voltage, and under-voltage protection circuits protect the power supply and the connected load from damage. The remote sensing feature compensates for voltage drops across PCB traces, ensuring accurate voltage regulation at the load. The device is typically available in a small QFN package. It is designed for surface mount applications.