TI-TPS53676双路6 1带有AVSBus的多相控制器解决技术方案.docx

AO-Electronics傲壹电子官网：中文网： TI TPS53676双路6＋1带有AVSBus的多相控制器解决方案 RTI公司的TPS53676是双路降压控制器,内置了非易失存储器(NVM)和PMBus?兼容的串行接口,完全和TI公司的NexFET?智能功率级.器件先进的控制特性如D-CAP+?架构提供了快速瞬态响应,低输出电容和良好的电流共享.器件还提供一种新颖相位交织策略和灵活点火顺序以改善热性能.可调控制输出电压转换速率和电压位置同样支持,此外,器件还支持PMBus通信接口,用以向主系统报告遥测电压,电流,功率,温度和故障条件.所有的可编参数能通过串行接口进行配置,并存储在NVM,以最少化外接元件数量.器件输入电压为4.5V到17V,输出电压范围为0.25V到5.5V,每相开关频率范围为300 kHz 到2000 kHz.双输出支持N+M相配置(N+M ≤ 7, M ≤ 3).器件的工作温度–40C 到125C.6 mm × 6 mm, 48引脚QFN封装.主要用在数据中心网络交换机,园区和分支交换机,核心和边沿路由器,硬件加速器卡,高性能CPU/ASIC/FPGA电源.本文介绍了TPS53676主要特性,功能框图和控制器电路图,功率级电路图以及评估板TPS53676EVM主要特性,电路图,材料清单和PCB设计图. ? The TPS53676 is a step-down controller with dualchannels, built-in non-volatile memory (NVM), andPMBus? compatible serial interface, and is fullycompatible with TI NexFET? smart power stage. Advanced control features such as D-CAP+?architecture provide fast transient response, lowoutput capacitance, and good current sharing. Thedevice also provides novel phase interleaving strategyand flexible firing sequences to improve thermalperformance. Adjustable control of output voltageslew rate and voltage positioning are also supported. In addition, the device supports the PMBuscommunication interface for reporting the telemetry ofvoltage, current, power, temperature, and faultconditions to the system host. All programmableparameters can be configured by the serial interfaceand can be stored in NVM as the new default valuesto minimize the external component count. The TPS53676 device if offered in a thermallyenhanced 48-pin QFN packaged and is rated tooperate from –40C to 125C. TPS53676主要特性: ? Input voltage range: 4.5 V to 17 V ? Output voltage range: 0.25 V to 5.5 V ? Per-phase switching frequency range: 300 kHz to2000 kHz ? Dual output supporting N+M phase configurations(N+M ≤ 7, M ≤ 3) ? AVSBus compliant, per PMBus 1.3.1 part III ? PMBus v1.3.1 system interface for configuration,control and telemetry of voltage, current, power,temperature, and fault status ? Adaptive voltage scaling (AVS) throughVOUT_COMMAN