TPS542951 Series
4.5 V to 18 V input, 2 A / 3 A dual channel synchronous step-down converter, adjustable soft start
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Utilized IC / Part | Supplied Contents | Frequency - Switching▲▼ | Voltage - Output▲▼ | Main Purpose | Outputs and Type▲▼ | Outputs and Type | Voltage - Input▲▼ | Voltage - Input▲▼ | Board Type | Current - Output▲▼ | Voltage - Output (Min/Fixed)▲▼ | Topology | Synchronous Rectifier▲▼ | Mounting Type | Function | Voltage - Output (Max)▲▼ | Package / Case | Output Type | Supplier Device Package | Operating Temperature▲▼ | Operating Temperature▲▼ | Number of Outputs▲▼ | Voltage - Input (Max)▲▼ | Output Configuration | Voltage - Input (Min)▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS542951EVM-057TPS542951 D-CAP2™, Eco-Mode™ DC/DC, Step Down 2, Non-Isolated Outputs Evaluation Board | TPS542951 | Board(s) | 700000 Hz | 1.5 V, 3.299999952316284 V | DC/DC, Step Down | 2 ul | Non-Isolated | 18 V | 5 V | Fully Populated | 2 A, 3 A | |||||||||||||||
Texas Instruments TPS542951RSATBuck Switching Regulator IC Positive Adjustable 0.76V 2 Output 2A, 3A 16-VQFN Exposed Pad | 700000 Hz | 2 A, 3 A | 0.7599999904632568 V | Buck | Surface Mount | Step-Down | 7 V | 16-VQFN Exposed Pad | Adjustable | 16-QFN (4x4) | 85 °C | -40 °C | 2 ul | 18 V | Positive | 4.5 V |
Key Features
• D-CAP2 Control ModeFast Transient ResponseNo External Parts Required For LoopCompensationCompatible with Ceramic OutputCapacitorsWide Input Voltage Range :4.5 V to 18 VOutput Voltage Range :0.76V to 7.0VHighly Efficient Integrated FETs Optimizedfor Low Duty Cycle Applications150 mΩ (High Side) and100 mΩ (Low Side)High Initial Reference AccuracySupports Constant 2 A CH1 and3 A CH2 Load CurrentLow-Side rDS(on)Loss-Less CurrentSensingAdjustable Soft StartNon-Sinking Pre-Biased Soft Start700 kHz Switching FrequencyCycle-by-Cycle Over-Current Limit ControlOCL/UVLO/TSD ProtectionsHiccup Timer for Overload ProtectionAdaptive Gate Drivers with IntegratedBoost PMOS SwitchOCP Constant Due To Thermally CompensatedrDS(on)with 4000ppm/°C16-Pin HTSSOP, 16-Pin VQFNAuto-Skip Eco-mode™ for High Efficiency at Light LoadD-CAP2 Control ModeFast Transient ResponseNo External Parts Required For LoopCompensationCompatible with Ceramic OutputCapacitorsWide Input Voltage Range :4.5 V to 18 VOutput Voltage Range :0.76V to 7.0VHighly Efficient Integrated FETs Optimizedfor Low Duty Cycle Applications150 mΩ (High Side) and100 mΩ (Low Side)High Initial Reference AccuracySupports Constant 2 A CH1 and3 A CH2 Load CurrentLow-Side rDS(on)Loss-Less CurrentSensingAdjustable Soft StartNon-Sinking Pre-Biased Soft Start700 kHz Switching FrequencyCycle-by-Cycle Over-Current Limit ControlOCL/UVLO/TSD ProtectionsHiccup Timer for Overload ProtectionAdaptive Gate Drivers with IntegratedBoost PMOS SwitchOCP Constant Due To Thermally CompensatedrDS(on)with 4000ppm/°C16-Pin HTSSOP, 16-Pin VQFNAuto-Skip Eco-mode™ for High Efficiency at Light Load
Description
AI
The TPS542951 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS542951 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS542951 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS542951 to maintain high efficiency during lighter load conditions. The TPS542951 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.
The TPS542951 is available in a 4.4mm × 5.0mm 16 pin TSSOP (PWP) package, and 4mm × 4mm 16 pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.
The TPS542951 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS542951 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS542951 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS542951 to maintain high efficiency during lighter load conditions. The TPS542951 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.
The TPS542951 is available in a 4.4mm × 5.0mm 16 pin TSSOP (PWP) package, and 4mm × 4mm 16 pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.