ISL95833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 ISL95833 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 ISL95833 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
• Dual Outputs:
• Configurable 2- or 1-phase for the 1st Output using one Integrated Gate Driver
• 1-phase for the 2nd Output using an Integrated Gate Driver
• R3 Modulator
• Excellent Transient Response
• High Light Load Efficiency
• 0.5% System Accuracy Over-Temperature
• Supports Multiple Current Sensing Methods
• Lossless Inductor DCR Current Sensing
• Precision Resistor Current Sensing
• Differential Remote Voltage Sensing
• Programmable VBOOT Voltage at Start-up
• Resistor Programmable IMAX, Switching Frequency for Both Outputs
• Adaptive Body Diode Conduction Time Reduction

应用 Application

• IMVP-7/VR12 Compliant Computers

简介

ISL95833属于集成电路（IC）的特殊用途稳压器。由Renesas制造生产的ISL95833特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。