Renesas ISL8282M 15A高效混合数字降压电源模块解决方案

Renesas公司的ISL8282M是PMBus使能的具有Renesas R4™技术的高效混合单路数字降压电源模块,输入电压4.5V-16.5V,输出电压范围0.5V-5V,输出连续电流高达15A,转换效率高达90%.器件包括用于器件配置的SMBus/PMBus/I2C接口,遥测(VIN,VOUT,IOUT和温度)以及故障报告.所采用的Renesas R4控制方案具有极快的瞬态性能,精确的频率控制和内部补偿,其效率增强模式PFM大大改善了轻负载的效率,而ISL8282M串行总线使得R4回路优化容易实现,使得广泛范围内包括所有陶瓷输出滤波器的应用都有快速瞬态性能,具有超温保护,输出过流和短路保护,输出过压和欠压保护,遥测断开保护,输入UVLO和加电顺序,故障重置,以及和Renesas PowerNavigator™软件兼容.主要用在服务器,通信,存储和数据通信,工业/ATE和网络设备,图像卡以及用于ASIC,FPGA,DSP和存储器的通用电源.本文介绍了ISL8282M主要特性,框图,典型应用电路以及评估板ISL8282MEVAL1Z主要特性,指标和框图,电路图和材料清单,以及PCB设计图.
The ISL8282M is a PMBus enabled DC/DC singlechannel step-down power supply featuring theproprietary Renesas R4™ Technology. The modulesupports a wide 4.5V to 16.5V input voltage range and awide 0.5V to 5V output range capable of delivering up to15A of continuous current. The ISL8282M achieves upto 95% conversion efficiency and is optimized for highpower density. Integrated LDOs provide module biasvoltage allowing for single supply operation. TheISL8282M includes a SMBus/PMBus/I2C interface fordevice configuration, telemetry (VIN, VOUT, IOUT, andtemperature), and fault reporting.
The proprietary Renesas R4 control scheme has extremelyfast transient performance, accurately regulatedfrequency control, and all internal compensation. Anefficiency enhancing PFM mode greatly improveslight-load efficiency. The ISL8282M’s serial bus allowsfor easy R4 loop optimization that results in fast transientperformance across a wide range of applicationsincluding all ceramic output filters.
The ISL8282M has four 8-bit configuration pins thatprovide very flexible configuration options (such asfrequency, VOUT, and AV gain) without the need forbuilt-in NVM memory. As a resu...