Renesas Electronics Corporation Special Purpose Regulators ISL6328AIRZ

The ISL6328A is a dual PWM controller designed for powering AMD SVI split-plane processors, featuring two synchronous buck DC/DC converters. It supports power control through a serial VID interface and includes a multiphase controller for core voltage (VDD) and a single-phase controller for the Northbridge (VDDNB). The device integrates two power MOSFET drivers, reducing the need for external components and allowing for flexible layout options. Key features include precision core voltage regulation with ±0.6% system accuracy over temperature, advanced control loop capabilities for optimal transient response, and fully differential continuous DCR current sensing for accurate load line programming and channel current balancing. The ISL6328A also supports Power Savings Mode, which reduces the number of active phases during light load conditions, enhancing efficiency. The selectable switching frequency can reach up to 1MHz, and it includes dual-level overcurrent protection and multitiered overvoltage protection for enhanced reliability. This product is suitable for applications requiring efficient power management solutions in AMD processor environments.