TPS53681 Series
Dual-Channel 6+2/5+3 D-CAP+TM Multiphase Step-Down Controller with PMBus and NVM
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Control Features | Output Phases▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Function | Serial Interfaces | Output Configuration | Topology | Package / Case | Supplier Device Package | Frequency - Switching▲▼ | Frequency - Switching▲▼ | Mounting Type | Clock Sync▲▼ | Number of Outputs▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Synchronous Rectifier▲▼ | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS53681RSBTBuck Regulator Positive Output Step-Down PMBus DC-DC Controller IC 40-WQFN (5x5) | Current Limit, Enable | 8 ul | 125 °C | -40 °C | Step-Down | PMBus | Positive | Buck | 40-WFQFN Exposed Pad | 40-WQFN (5x5) | 1000000 Hz | 300000 Hz | Surface Mount | 2 ul | 4.5 V | 17 V | PWM Signal | ||
Texas Instruments TPS53681RSBRBuck Regulator Positive Output Step-Down PMBus DC-DC Controller IC 40-WQFN (5x5) | Current Limit, Enable | 8 ul | 125 °C | -40 °C | Step-Down | PMBus | Positive | Buck | 40-WFQFN Exposed Pad | 40-WQFN (5x5) | 1000000 Hz | 300000 Hz | Surface Mount | 2 ul | 4.5 V | 17 V | PWM Signal |
Key Features
• Conversion Input Voltage Range: 4.5 V to 17 V8-Bit DAC with Selectable 5 mV or 10 mV Resolution and Output Ranges from 0.25 V to 1.52 V or 0.5 to 2.8125 V for Dual ChannelsPhase ConfigurationsMaximum (6-Phase + 2-Phase) or (5-Phase + 3-Phase)Minimum (1-Phase + 1-Phase)Driverless Configuration for Efficient High-Frequency SwitchingDynamic Output Voltage Transitions with Programmable Slew Rates via PMBus InterfaceFrequency Selections with Closed-loop Frequency Control: 300 kHz to 1 MHzProgrammable Internal Loop CompensationsConfigurable with Non-Volatile Memory (NVM) for Low External Component CountsIndividual Phase Current Calibrations and ReportsDynamic Phase Shedding with Programmable Current Threshold for Optimizing Efficiency at Light and Heavy LoadsFast Phase-Adding for Undershoot Reduction (USR)Fully Compatible with TI NexFET™ Power Stage for High-Density SolutionsAccurate, Adjustable Voltage PositioningPatented AutoBalance™ Phase BalancingSelectable, 16-level Per-Phase Current LimitPMBus™ System Interface for Telemetry of Voltage, Current, Power, Temperature, and Fault ConditionsLow Quiescent Current5 mm × 5 mm, 40-Pin, QFN PowerPad™ PackageConversion Input Voltage Range: 4.5 V to 17 V8-Bit DAC with Selectable 5 mV or 10 mV Resolution and Output Ranges from 0.25 V to 1.52 V or 0.5 to 2.8125 V for Dual ChannelsPhase ConfigurationsMaximum (6-Phase + 2-Phase) or (5-Phase + 3-Phase)Minimum (1-Phase + 1-Phase)Driverless Configuration for Efficient High-Frequency SwitchingDynamic Output Voltage Transitions with Programmable Slew Rates via PMBus InterfaceFrequency Selections with Closed-loop Frequency Control: 300 kHz to 1 MHzProgrammable Internal Loop CompensationsConfigurable with Non-Volatile Memory (NVM) for Low External Component CountsIndividual Phase Current Calibrations and ReportsDynamic Phase Shedding with Programmable Current Threshold for Optimizing Efficiency at Light and Heavy LoadsFast Phase-Adding for Undershoot Reduction (USR)Fully Compatible with TI NexFET™ Power Stage for High-Density SolutionsAccurate, Adjustable Voltage PositioningPatented AutoBalance™ Phase BalancingSelectable, 16-level Per-Phase Current LimitPMBus™ System Interface for Telemetry of Voltage, Current, Power, Temperature, and Fault ConditionsLow Quiescent Current5 mm × 5 mm, 40-Pin, QFN PowerPad™ Package
Description
AI
The TPS53681 is a multiphase step-down controller with dual channels, built-in non-volatile memory (NVM), and PMBus™ interface, and is fully compatible with TI NexFET ™power stage. Advanced control features such as D-CAP+™ architecture with undershoot reduction (USR) provide fast transient response, low output capacitance, and high efficiency. The device also provides novel phase interleaving strategy and dynamic phase shedding for efficiency improvement at different loads. The device supports fast dynamic voltage transitions with adjustable slew rate. In addition, the device supports the PMBus communication interface for reporting the telemetry of voltage, current, power, temperature, and fault conditions to the systems. All programmable parameters can be configured by the PMBus interface and can be stored in NVM as the new default values to minimize the external component count.
The TPS53681 device is offered in a thermally enhanced 40-pin QFN packaged and is rated to operate from –40°C to 125°C.
The TPS53681 is a multiphase step-down controller with dual channels, built-in non-volatile memory (NVM), and PMBus™ interface, and is fully compatible with TI NexFET ™power stage. Advanced control features such as D-CAP+™ architecture with undershoot reduction (USR) provide fast transient response, low output capacitance, and high efficiency. The device also provides novel phase interleaving strategy and dynamic phase shedding for efficiency improvement at different loads. The device supports fast dynamic voltage transitions with adjustable slew rate. In addition, the device supports the PMBus communication interface for reporting the telemetry of voltage, current, power, temperature, and fault conditions to the systems. All programmable parameters can be configured by the PMBus interface and can be stored in NVM as the new default values to minimize the external component count.
The TPS53681 device is offered in a thermally enhanced 40-pin QFN packaged and is rated to operate from –40°C to 125°C.