TI TPS536C7B1两路非易失存储器(NVM)降压控制器解决方案

TI公司的TPS536C7B1是两路内置了非易失存储器(NVM)和PMBus接口的降压控制器,完全和TINexFET™智能功率级兼容.其先进的控制特性如D-CAP+架构提供快速瞬态响应,低输出电容和良辰美景的电流共享.器件还提供新型相位交错策略和灵活多样点火顺序.器件还支持可调控制输出电压转换速率和自适应电压定位.此外,还支持PMBus通信接口用来给主系统报告远程电压,电流,功率,温度和故障条件.所有可编程参数能通过PMBus接口进行配置,并存储在NVM中作为新默认值,以最大限度降低外接元件数量.器件输入电压范围4.5V到18V,输出电压范围0.25V到5.5V,每相的开关频率从300kHz到2000kHz.双路输出支持N+M相配置(N+M ≤ 12, M ≤ 6).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,校园和分支交换,核心和边沿路由器,硬件加速卡和高性能CPU/ASIC/FPGA电源.本文介绍了TPS536C7B1主要特性,简化电路和功能框图,控制器电路,三种功率级电路, 输出电容电路以及评估模块TPS536C7EVM主要特性,电路图,材料清单和PCB设计图.

The TPS536C7B1 is a step-down controller with dualchannels, built-in non-volatile memory (NVM), andPMBus interface, and is fully compatible with TINexFET™ smart power stages. Advanced controlfeatures such as the D-CAP+ architecture provide fast

transient response, low output capacitance, and goodcurrent sharing. The device also provides a novelphase interleaving strategy and flexible firing order.

Adjustable control of output voltage slew rate andadaptive voltage positioning are also supported. Inaddition, the device supports the PMBuscommunication interface for reporting telemetry ofvoltage, current, power, temperature, and faultconditions to the system host. All programmableparameters can be configured by the PMBusinterface, and can be stored in NVM as the newdefault values to minimize the external component

count.

The TPS536C7B1 device if offered in a thermallyenhanced 48-pin QFN packaged and is rated tooperate from –40C to 125C.

TPS536C7B1主要特性:

• Input Voltage Range: 4.5 V to 18 V

• Output Voltage Range: 0.25 V to 5.5 V