Data Sheet No.94514 IRUK3055CQ01 POWER MANAGEMENT CHIPSET FOR 3-PHASE VRM 9.0 CONVERTERS FEATURES DESCRIPTION Complete VRM 9.0 chipset for a 3-phase Buck converter capable of up to 60A Optimized chipset for easy design of high current multiphase DC-DC converters complying with the VRM 9.0 specification HEXFET MOSFETs for the control and synchronous FET socket APPLICATIONS Intel Pentium 4 and AMD K7 CPU Power Low voltage/high current DC to DC converters The IRUK3055CQ01 is a complete power management chipset solution that meets Intel’s VRM 9.0 specifications for CPU power. The chipset consists of the IRU3055CQ 3-phase PWM IC and matching control (IRF3704S) and synchronous MOSFETs (IRF3711S). The IRUK3055CQ01TR chipset simplifies procurement of power MOSFETs and multi-phase, synchronous PWM ICs to reduce design time of high current DC-DC converters for CPU power. When used in a 3-phase DC-DC converter design, the IRUK3055CQ01TR chipset can provide up to 60A for microprocessor VCORE requirements. CHIPSET CONTENTS Each IRUK3055CQTR chipset contains: PART # IRU3055CQ IRF3704S IRF3711S DESCRIPTION 5-Bit Programmable 3-Phase Synchronous PWM IC 20VN Control MOSFET, 9mV (Max) 20VN Synchronous MOSFET, 6.5mV (Max) PACKAGE 36-Pin QSOP D2Pak D2Pak QTY 1 3 3 Note: Click on the part numbers in the table above to link to individual datasheets. You may also use the part search engine on www.irf.com to access the datasheets of the individual parts. ORDER INFORMATION PART # IRUK3055CQ01TR IRUK3055CQ01 Rev. 1.0 06/26/02 DESCRIPTION VRM 9.0 Power Chipset in Tape and Reel VRM 9.0 Power Chipset in Bulk www.irf.com STANDARD PACK 1600 1 1 IRUK3055CQ01 TYPICAL APPLICATION CIRCUIT 12V C3 1uF D1 Vcc C5 1uF VCH12 5V VCH3 C1 1uF C2 0.1uF V CL1 V CL23 HDrv1 C4 1000uF L1 1uH Q1 IRF3704S C6 6 x 1500uF R1 OCSet L2 2.2K Ref Q2 IRF3711S LDrv1 Rt PGnd1/ OCGnd 1uH R2 1.5K C8 CS1 SS C9 1uF R3 47K C10 0.1uF 1uF HDrv2 Q3 IRF3704S LDrv2 Q4 IRF3711S IRU3055 D4 PGnd2 L3 1uH R4 1.5K D3 C11 CS2 1uF D2 HDrv3 Q5 IRF3704S LDrv3 Q6 IRF3711S D1 D0 C12 R6 22nF 27K 1.5V / 60A PGnd3 L4 1uH R5 1.5K Comp C13 CS3 1uF C7 100pF Fb C14 8x 2700uF (Optional) Figure 1 - Application circuit of a 3-phase Buck converter using the IRUK3055CQ01TR chipset. VOUT = 1.5V @ 60A IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7903 Visit us at www.irf.com for sales contact information Data and specifications subject to change without notice. 02/01 2 www.irf.com Rev. 1.0 06/26/02