International Rectifier Corp. (IR, El Segundo, CA) introduced its IRUK3055CQ01 complete power management chip set for simplifying the design of low-voltage, high-current, multi-phase synchronous, dc/dc converters complying with Intel® VRM 9.0 design guidelines.
The IRUK3055CQ01 chip set consists of one IRU3055CQ integrated, five-bit programmable, three-phase, pulse-width modulated, controller IC with on-board drivers; three IRF3704S control HEXFET®, power MOSFETs; and three IRF3711S synchronous HEXFET MOSFETs. The devices are individually optimized to work together to maximize system-level efficiency in a complete, three-phase, dc/dc synchronous-buck, converter solution, delivering up to 60A to power advanced microprocessors.
The IRU3055CQ PWM controller IC offers a programmable output voltage from 1.075V to 1.85V in 25mV steps, with up to one-percent output-voltage accuracy over the entire operating temperature range. The controller IC also offers under-voltage lockout, over-voltage protection, externally programmable soft-start, as well as a power-good function that detects outputs beyond ±10 percent of the programmed voltage.
Pricing for the IRUK3055CQ01 chip set is $4.20 each in 10,000-unit quantities. The IRDC3055 reference design kit is $250 each, and can be purchased online.
