The ISL6412IRZ is a synchronous rectified buck regulator control IC manufactured by Intersil (now Renesas). It is designed for high-performance CPU core power supply applications, particularly in notebook computers and other portable devices. It provides excellent transient response and high efficiency.

Applications

• Notebook computers: Powers the CPU core in portable computers.
• Desktop computers: Used in voltage regulator modules (VRMs) for CPU power.
• Graphics cards: Supplies power to the GPU core.
• Embedded systems: Provides regulated power in various embedded applications requiring high efficiency.

Features

• Synchronous rectification: Improves efficiency by replacing the Schottky diode with a MOSFET.
• Adjustable output voltage: Allows for precise voltage regulation.
• Overcurrent protection: Protects the regulator and the load from excessive current.
• Undervoltage lockout (UVLO): Prevents operation with insufficient input voltage.
• Remote sensing: Compensates for voltage drops across PCB traces.
• Voltage positioning: Improves transient response by dynamically adjusting the output voltage.

Benefits

• High efficiency: Synchronous rectification minimizes power loss.
• Precise voltage regulation: Adjustable output voltage ensures optimal performance.
• Protection against faults: Overcurrent and undervoltage protection enhance reliability.
• Improved transient response: Voltage positioning minimizes voltage deviations during load changes.
• Remote sensing capability: Compensates for PCB trace losses, ensuring accurate voltage regulation at the load.

Technical Specifications: The ISL6412IRZ typically operates with an input voltage range suitable for standard power supplies. The output voltage is adjustable via external resistors. It supports switching frequencies in the range of 200kHz to 1MHz. The control scheme is based on a voltage-mode PWM controller. It features overcurrent protection with a current limit that can be adjusted. It also includes an undervoltage lockout (UVLO) function. The ISL6412IRZ is available in a small TSSOP package. For detailed specifications, refer to the device's datasheet.