描述 The TPS53647 is a high-current, multi-phase, step-down controller.Thedevice offers built-in non volatile memory (NVM) and PMBus interface. It iscompatible with theNexFET power stages (CSD95372BQ5MC). The TPS53647 provides8-bitBOOT voltage selection covering output voltage from 0.5 V to 2.5 V, withsteps as small as 5 mV,which is ideal for high current application withaccurate output voltage setting. Advanced controlfeatures such as D-CAP+architecture with undershoot reduction (USR) and overshoot reduction (OSR) provide fast transient response, lowest output capacitance, and highefficiency. TheTPS53647 also provides novel phase interleaving strategy anddynamic phaseshedding for efficiency improvement at light loads. In addition,the TPS53647supports the PMBus communication interface with systems fortelemetry of voltage, current, power,temperature, and fault conditions. Someof the configurations can be programmed by pinstrap orPMBus and stored innon-volatile memory to minimize the external component count. The TPS53647 is offered in a space saving, thermally enhanced 40-pinQFNpackage and is rated to operate from –40°C to 125°C. For all available packages, see the orderable addendum at the特性 8-bit Selectable BOOT Voltage via Pinstrap or NVM: 0.5 V to 2.5 V (downto 5-mVStep) 1-,2-, 3-, or 4-PhaseOperationPMBus System Interface for Telemetry ofVoltage, Current, Power,Temperature, and Fault Conditions 1.8-V and 3.3-V PMBus Bias Compatible Fault Reporting: Output Voltage, Output Current, and TemperatureConfigurable with Non-Volatile Memory (NVM) or Resistor Pinstrap16 Levels of Programmable OCP with Pinstrap or NVMFast Transient with DCAP+ControlOptimized Efficiency at Light and Heavy LoadsSupport Pre-Bias StartupPhase CurrentImbalance Detection and Reporting 8 Independent Levels of Overshoot Reduction (OSR) and Undershoot Reduction(USR)Driverless Configuration for Efficient High-Frequency SwitchingFully Compatible with CSD95372BQ5MCNexFET Power StageAccurate, Adjustable Voltage Positioning300-kHz to 1-MHz Frequency Selections with Closed-loop FrequencyControl Patented AutoBalance PhaseBalancing Uses TI’sFusion Digital Power DesignerGUI Dynamic Phase Shedding with Programmable Current ThresholdConversion Voltage Range: 4.5 V to 17 V Small, 6 mm × 6 mm, 40-Pin, QFN, PowerPAD Package