ISL6277中文资料适用于使用 SVI 的 AMD Fusion Mobile CPU 的多相 PWM 稳压器 2.0数据手册Renesas规格书

描述 Description

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 transients and improved light load efficiency.The ISL6277 has several other key features. Both outputs support DCR current sensing with single NTC thermistor for DCR temperature compensation or accurate resistor current sensing. Both outputs utilize remote voltage sense, adjustable switching frequency, OC protection and power good.

特性 Features

• Supports AMD SVI 2.0 Serial Data Bus Interface
• Two Dedicated Core Drivers
• Precision Voltage Regulation
• 0.5V to 1.55V in 6.25mV Steps
• Supports Multiple Current Sensing Methods
• Precision Resistor Current Sensing
• Adaptive Body Diode Conduction Time Reduction
• Output Current Monitor and Thermal Monitor
• High Efficiency Across Entire Load Range
• Programmable VID Offset and Droop on Both Outputs
• Excellent Dynamic Current Balance Between Phases
• Small Footprint 48 Ld 6x6 QFN Package
• Pb-Free (RoHS Compliant)

应用 Application

• AMD Fusion CPU/GPU Core Power
• Notebook Computers