ISL6277A Datasheet | Renesas

Multiphase PWM Regulator for AMD Fusion™ Mobile CPUs Using SVI 2.0 FN8322 Rev 2.00 December 4, 2015 The ISL6277A is fully pliant with AMD Fusion SVI 2.0 and provides a plete solution for microprocessor and graphics processor core power. The ISL6277A 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 municate with the AMD CPU and achieve lower cost and smaller board area pared with two-chip solutions. The PWM modulator is based on Intersil’s Robust Ripple Regulator R3™ Technology. pared to traditional modulators, the R3™ modulator can automatically change switching frequency for faster transient settling time during load transients and improved light load efficiency. The ISL6277A has...