VT1115M Datasheet | Volterra Semiconductor

PRELIMINARY VT1115M CHIPSET REVISION - December 30, 2004 PROGRAMMABLE OUTPUT, MULTIPHASE SWITCHING REGULATOR WITH SMBus SENSEVOLT -ERRDAo CNOot NFRIe Dp Ero Nd TIu Ac Le SENSE+ Idesbus & Clock Smart Slave™ VT1105S VT1125S Input Voltage 7V to 13.2V Output Voltage 0.600V to 1.600V Current Rating 25A per Phase VRs 10.X, 11 & Opteron™ GENERAL DESCRIPTION Volterra’s fourth-generation chipset is a plete, integrated, scalable architecture for the highest density multiphase synchronous buck regulators. This ultra high density solution minimizes external ponents and offers enhanced regulator performance, prehensive control and reporting Features , ease of design and the smallest footprint available for demanding multiphase synchronous buck converters. The chipset is targeted for applications such as servers and networking systems. The VT1115M master is part of the Volterra Generation 4 architecture as shown in Figure 1. Each VT1115M drives and controls multiple Generation 4 Smart Slave™ integrated output devices, such as the VT1105S and VT1125S. The number of Generation 4 Smart Slaves™ can be set by design, according to the application requirements. The desired slave and load operating conditions are controlled by a desired current mand issued from the VT1115M to the slave devices. Configuration and monitoring of the VR conditions are controlled via an interconnecting bus between the master and the slaves as shown in Figure 1. The VT1115M supports the following voltage regulator specifications: Intel® VR 10 and extended VR 10, AMD Opteron™ and Intel® VR 11. The architecture incorporates a SMBus interface for monitoring and control of the voltage regulator. Regulator parameters can be set and monitored via the two-way SMBus for control, protection and shutdown of the regulator. The SMBus can provide a reading of faults such as VX short-circuit or slave over-temperature, so that the regulator can be controlled and protected during all operating conditions. The...