ISL6277

DATASHEETISL6277 Multiphase PWM Regulator for AMD Fusion™ MobileNCROEPTCUROsEMIUNCMsTOEiEnMNRgMDSSEEILVNDPIDRA2EE.RD0PTFLIOASRCL6EN2ME7E7WANDT EPSAIRGTNS FN8270 Rev 1.00 Mar 8, 2012 The ISL6277 is fully compliant with AMD Fusion™ SVI 2.0 and provides a complete solution for microprocessor and graphics processor core power. The ISL6277 controller supports two Voltage Regulators (VRs) with three integrated gate drivers and two optional external drivers for maximum flexibility. The Core VR can be configured for 3-, 2-, or 1-phase operation while the Northbridge VR supports 2- or 1-phase configurations. The two VRs share a serial control bus to communicate with the AMD CPU and achieve lower cost and smaller board area compared with two-chip solutions. The PWM modulator is based on Intersil’s Robust Ripple Regulator R3 Technology™. Compared to traditional modulators, the R3 modulator can automatically change switching frequency for faster transient settling time during load...