VT1165M

SENSEVOLTE- RRDAoCNOotNFRIeDpEroNdTIuAcLe SENSE+ Idesbus & Clock Vendor PN:VT1165MFQX PRELIMINARY VT1165M CHIPSET REVISION - December 8, 2005 PROGRAMMABLE OUTPUT, MULTIPHASE SWITCHING REGULATOR WITH SMBus Smart Current Input Slave™ Rating Voltage VT1105S* 25A per VT1125S Phase 10.8V to VT1115S 30A per 13.2V VT1135S Phase Output Voltage 0.800V to 1.850V or 0.450V to 2.0375V VID VRMs 9, 10.X, and Opteron™ or Serial VID (SVID) Mode GENERAL DESCRIPTION The VT1165M chipset, Volterra’s fourth-generation chipset, is a complete, integrated, scalable architecture for the highest density multi-phase synchronous buck regulators. This ultra high density solution minimizes external components and offers enhanced regulator performance, comprehensive control and reporting features, ease of design and the smallest footprint available for demanding multi-phase synchronous buck converters. The chipset is targeted for applications such as servers and networking systems. The VT1165M system architecture consists of a master controller (VT1165M), multiple Smart Slave™ integrated output devices, input capacitors, output capacitors and output inductors. The actual number of Smart Slaves™ can be set by the designer and application requirements. The desired slave and load operating conditions are controlled and monitored via an interconnecting digital bus as shown in Figure 1. With this chipset, Volterra implements enhancements to the digital SMBus interface for monitoring and controlling of t...