原标题：Intersil ISL68137数字双输出多相PWM控制解决方案

　　Intersil公司的ISL68137是具有自适应电压缩放接口(AVSBus)的数字双输出灵活的多相(X+Y ≤ 7)PWM控制器,支持7+0, 6+1, 5+2, 4+2, 3+3, 3+2相操作,和PMBus 1.3 以及AVSBus兼容,支持ISL99227 60A 智能功率级,主要用在网络设备,电信/数据通信设备,服务器/存储设备,点负载电源(存储器,DSP,ASIC,FPGA).本文介绍了ISL68137主要特性,框图和几种典型应用电路,以及评估板ISL68137-61P-EV1Z主要特性,框图,电路图,材料清单和PCB元件布局图.

　　The ISL68137 is a digital dual output, flexible multiphase (X+Y ≤ 7) PWM controller with AVSBus (Adaptive Voltage Scaling interface). The ISL68137 can be configured to support any desired phase assignments up to a maximum of 7 phases across the 2 outputs (X+Y). For example, 6+1, 5+2, 4+2, 3+3, 3+2, or even a single output operation as a 7+0 configuration are supported. The flexible phase arrangement, combined with PMBus and AVSBus interfaces, allows the device to support any demanding power supply requirement. The ISL68137 with AVSBus complements PMBus by providing a common interface that accelerates point-to-point communication between the controller and the load to statically and dynamically control the processor voltage, thus delivering a balanced and power efficient solution. AVSBus can be used exclusively once the device is configured via PMBus. The ISL68137 utilizes Intersil’s proprietary linear synthetic digital current modulation scheme to achieve the industry’s best combination of transient response and ease of tuning while addressing the challenges of modern multiphase designs.

　　Device configuration and telemetry monitoring is accomplished using Intersil’s intuitive PowerNavigator™ GUI. The ISL68137 device supports on-chip nonvolatile memory to store various configuration settings that are user selectable via pin-strap, giving system designers increased power density to configure and deploy multiple configurations. The device supports an automatic phase add/drop feature to allow maximum efficiency across all load ranges. Thresholds for automatic phase add/drop are user programmable using the powerful PowerNavigator™ GUI.

　　The ISL68137 supports a comprehensive fault management system to enable the design of highly reliable systems. From a multitiered overcurrent protection scheme, to the configurable power-good and output overvoltage/undervoltage fault thresholds and temperature monitoring, virtually any need is accommodated.

　　With minimal external components, easy configuration, robust fault management and highly accurate regulation capability, implementing a high performance multiphase regulator has never been easier.

　　ISL68137主要特性:

　　PMBus 1.3 and AVSBus compliant

　　Telemetry - VIN, VOUT, IOUT, power IN/OUT, temperature and various fault status registers

　　Individual AVSBus interface enables high speed voltage changes

　　Advanced linear digital modulation scheme

　　Zero latency synthetic current control for excellent HF current balance

　　Dual edge modulation for fastest transient response

　　Auto phase add/drop for excellent load vs efficiency profile

　　Flexible phase configuration

　　7+0, 6+1, 5+2, 4+3 phase operation

　　Operation using less than 7 phases between 2 outputs is also supported

　　Diode braking for overshoot reduction

　　Differential remote voltage sensing supports ±0.5% closed loop system accuracy over load, line and temperature

　　Highly accurate current sensing for excellent load line regulation and accurate OCP

　　Supports ISL99227 60A smart power stages

　　Supports DCR sense with integrated temperature compensation

　　Supports phasedoubler (ISL6617A) for up to 14-phase operation

　　Comprehensive fault management enables high reliability systems

　　Pulse-by-pulse phase current limiting

　　Total output current protection

　　Output and input OV/UV

　　Open voltage sense detect

　　Black box recording capability for faults

　　Intuitive configuration via PowerNavigator™ GUI

　　NVM to store up to 8 configurations

　　Pb-free (RoHS compliant)

　　ISL68137应用:

　　Networking equipment

　　Telecom/datacom equipment

　　Server/storage equipment

　　Point-of-load power supply (Memory, DSP, ASIC, FPGA)

　　图1.ISL68137框图

　　评估板ISL68137-61P-EV1Z

　　The ISL68137-61P-EV1Z evaluation board provides users amethod of evaluating the ISL68137 digital multiphase device.Included on the board is a high-performance transient loadgenerator capable of replicating the type of high di/dt loadstypical of today’s high current ASICs.

　　The ISL68137 is combined with the ISL99227 Smart PowerStage (SPS) to provide a highly efficient power solutioncapable of delivering up to 270A.

　　While the user may opt to evaluate the solution based on theIntersil default configuration, custom configurations are easilycreated using PowerNavigator™.

　　评估板ISL68137-61P-EV1Z主要特性:

　　• 0.5% VOUT regulation accuracy

　　• PMBus interface, AVSBus interface

　　• 3% IOUT telemetry accuracy

　　• Onboard transient load to facilitate testing

　　• ATX or bench supply connections for input sourcesSpecifications

　　This board has been configured and optimized for the followingoperating conditions:

　　• 0.6V to 1.8V output range. Up to 3.05V with BOM change

　　• 6+1 phase: 270A + 30A

　　• Input range from 5V to 16V

　　图.评估板ISL68137-61P-EV1Z外性和连接图

　　图.评估板ISL68137-61P-EV1Z正面图

　　图.评估板ISL68137-61P-EV1Z背面图

isl68137.pdf

isl68137-61p-ev1z-user-guide.pdf