TPS40131 Series
Two-Phase Synchronous Buck Controller w/Integrated Mosfet Drivers
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Number of Outputs▲▼ | Clock Sync▲▼ | Function | Control Features | Operating Temperature▲▼ | Operating Temperature▲▼ | Package / Case | Output Type | Supplier Device Package | Synchronous Rectifier▲▼ | Frequency - Switching▲▼ | Frequency - Switching▲▼ | Output Configuration | Duty Cycle (Max)▲▼ | Topology | Mounting Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS40131RHBRG4Buck Regulator Positive Output Step-Down DC-DC Controller IC 32-VQFN (5x5) | 4.5 V | 28 V | 2 ul | Step-Down | Current Limit, Enable, Frequency Control, Power Good, Soft Start | 85 °C | -40 °C | 32-VFQFN Exposed Pad | Transistor Driver | 32-VQFN (5x5) | 1200000 Hz | 100000 Hz | Positive | 0.875 ul | Buck | Surface Mount | ||
Texas Instruments TPS40131RHBRBuck Regulator Positive Output Step-Down DC-DC Controller IC 32-VQFN (5x5) | 4.5 V | 28 V | 2 ul | Step-Down | Current Limit, Enable, Frequency Control, Power Good, Soft Start | 85 °C | -40 °C | 32-VFQFN Exposed Pad | Transistor Driver | 32-VQFN (5x5) | 1200000 Hz | 100000 Hz | Positive | 0.875 ul | Buck | Surface Mount |
Key Features
• Supports 5-V OutputTwo-Phase Interleaved OperationOperates With Pre-Biased Outputs1-V to 40-V Power Stage Operation RangeRequires VIN5 @ 50 mA (typ) Depending on External MOSFETs and Switching Frequency10-µA Shutdown CurrentProgrammable Switching Frequency up to 1 MHz/PhaseCurrent Mode Control with Forced Current SharingBetter than 1% Internal 0.7-V ReferenceResistive Divider Sets Direct Output Over Voltage Threshold.Programmable Input Undervoltage LockoutTrue Remote Sensing Differential AmplifierResistive or Inductor’s DCR Current Sensing32-Pin QFN PackageCan Be Used with TPS40120 to Provide a 6-Bit Digitally Controlled OutputAPPLICATIONSPoint-of-Load ConverterGraphic CardsInternet ServersNetworking EquipmentTelecommunications EquipmentDC Power Distributed SystemsSupports 5-V OutputTwo-Phase Interleaved OperationOperates With Pre-Biased Outputs1-V to 40-V Power Stage Operation RangeRequires VIN5 @ 50 mA (typ) Depending on External MOSFETs and Switching Frequency10-µA Shutdown CurrentProgrammable Switching Frequency up to 1 MHz/PhaseCurrent Mode Control with Forced Current SharingBetter than 1% Internal 0.7-V ReferenceResistive Divider Sets Direct Output Over Voltage Threshold.Programmable Input Undervoltage LockoutTrue Remote Sensing Differential AmplifierResistive or Inductor’s DCR Current Sensing32-Pin QFN PackageCan Be Used with TPS40120 to Provide a 6-Bit Digitally Controlled OutputAPPLICATIONSPoint-of-Load ConverterGraphic CardsInternet ServersNetworking EquipmentTelecommunications EquipmentDC Power Distributed Systems
Description
AI
The TPS40131 is a two-phase synchronous buck controller that is optimized for low-output voltage, high-output current applications powered from a supply between 1 V and 40 V. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.
Each phase can be operated at a switching frequency up to 1 MHz, resulting in an effective ripple frequency of up to 2 MHz at the input and the output. The two phases operates 180 degrees out-of-phase.
The TPS40131 is a two-phase synchronous buck controller that is optimized for low-output voltage, high-output current applications powered from a supply between 1 V and 40 V. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.
Each phase can be operated at a switching frequency up to 1 MHz, resulting in an effective ripple frequency of up to 2 MHz at the input and the output. The two phases operates 180 degrees out-of-phase.