Renesas Electronics Corporation Special Purpose Regulators ISL6566IRZA

The ISL6566IRZA is a three-phase PWM controller designed for precision voltage regulation in advanced microprocessor applications, including Intel VRM9, VRM10, and AMD Hammer. It features integrated MOSFET drivers, which reduces the need for external components, optimizing space and cost in power management solutions. The device supports 1, 2, or 3-phase operation and offers differential remote voltage sensing with a system accuracy of ¬±0.5% over temperature. Key functionalities include adjustable reference voltage offset, precision channel current sharing using loss-less rDS(ON) current sampling, and accurate load line programming through loss-less inductor DCR current sampling. The ISL6566IRZA also incorporates dynamic VID technology, allowing for microprocessor voltage identification inputs with up to a 6-bit DAC. Protection features include overcurrent protection, multi-tiered overvoltage protection, and a digital soft-start function. The controller operates at selectable frequencies up to 1.5MHz per phase and is available in a 40-lead QFN package, compliant with RoHS standards. The operating temperature range for this part is -40 to 85¬8C, making it suitable for a variety of applications requiring robust performance.