ISL95833B中文资料Dual 2+1 PWM Controller for IMVP-7/VR12 CPUs数据手册Renesas规格书

描述 Description

The ISL95833B Pulse Width Modulation (PWM) controller IC provides a complete solution for IMVP-7/VR12™ compliant microprocessor and graphic processor core power supplies. It provides the control and protection for two Voltage Regulators (VRs). The first VR, typically for VCORE, incorporates 1 integrated driver and can operate in 2- or 1-phase configurations. The second VR, typically for graphics, is a single phase regulator incorporating an integrated driver. The two VRs share a serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the two-chip approach. Both VRs utilize Intersil's Robust Ripple Regulator R3 Technology™. The R3 modulator has numerous advantages compared to traditional modulators, including faster transient response, variable switching frequency during load transients, and improved light load efficiency due to its ability to automatically change switching frequency. The ISL95833B has several other key features. Both outputs support either DCR current sensing with a single NTC thermistor for DCR temperature compensation, or more precise resistor current sensing if desired. Both outputs come with remote voltage sense, programmable VBOOT voltage, IMAX, and switching frequency, adjustable overcurrent protection and separate Power-Good signals.

特性 Features

• Serial data bus
• Configurable 2- or 1-phase for the 1st output using one integrated gate driver
• R3™ Modulator
• High light load efficiency
• Supports multiple current sensing methods
• Precision resistor current sensing
• Programmable VBOOT voltage at start-up
• Adaptive body diode conduction time reduction

应用 Application

• IMVP-7/VR12 compliant computers