TPS54494 Series
4A Dual Channel Synchronous Step-Down Switcher with Integrated FET
Manufacturer: Texas Instruments
Catalog(3 parts)
| Part | Supplied Contents | Current - Output▲▼ | Voltage - Output▲▼ | Outputs and Type▲▼ | Outputs and Type | Voltage - Input▲▼ | Voltage - Input▲▼ | Frequency - Switching▲▼ | Utilized IC / Part | Main Purpose | Board Type | Number of Outputs▲▼ | Voltage - Input (Min)▲▼ | Voltage - Input (Max)▲▼ | Voltage - Output (Max)▲▼ | Topology | Supplier Device Package | Function | Output Type | Package / Case | Voltage - Output (Min/Fixed)▲▼ | Mounting Type | Synchronous Rectifier▲▼ | Output Configuration | Operating Temperature▲▼ | Operating Temperature▲▼ | Package / Case▲▼ | Package / Case▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS54494EVM-057TPS54494 SWIFT™, D-CAP2™, Eco-Mode™ DC/DC, Step Down 2, Non-Isolated Outputs Evaluation Board | Board(s) | 2 A, 4 A | 1.5 V, 3.299999952316284 V | 2 ul | Non-Isolated | 18 V | 5 V | 700000 Hz | TPS54494 | DC/DC, Step Down | Fully Populated | |||||||||||||||||
Texas Instruments TPS54494RSATBuck Switching Regulator IC Positive Adjustable 0.76V 2 Output 4A, 2A 16-VQFN Exposed Pad | 2 A, 4 A | 700000 Hz | 2 ul | 4.5 V | 18 V | 7 V | Buck | 16-QFN (4x4) | Step-Down | Adjustable | 16-VQFN Exposed Pad | 0.7599999904632568 V | Surface Mount | Positive | 85 °C | -40 °C | ||||||||||||
Texas Instruments TPS54494PWPBuck Switching Regulator IC Positive Adjustable 0.76V 2 Output 4A, 2A 16-PowerTSSOP (0.173", 4.40mm Width) | 2 A, 4 A | 700000 Hz | 2 ul | 4.5 V | 18 V | 7 V | Buck | 16-HTSSOP | Step-Down | Adjustable | 16-PowerTSSOP | 0.7599999904632568 V | Surface Mount | Positive | 85 °C | -40 °C | 0.004399999976158142 m | 0.004394200164824724 m |
Key Features
• D-CAP2 Control ModeFast Transient ResponseNo External Parts Required For Loop CompensationCompatible with Ceramic Output CapacitorsWide Input Voltage Range : 4.5 V to 18 VOutput Voltage Range: 0.76V to 7VHighly Efficient Integrated FETs Optimizedfor Low Duty Cycle Applications90 mΩ (High Side) and 60 mΩ(Low Side)High Initial Reference Accuracy4A CH1 / 2A CH2 Continuous Load CurrentLow-Side rDS(on)Loss-LessCurrent SensingFixed Soft Start : 1 msNon-Sinking Pre-Biased Soft StartPowergood700 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 Loop CompensationCompatible with Ceramic Output CapacitorsWide Input Voltage Range : 4.5 V to 18 VOutput Voltage Range: 0.76V to 7VHighly Efficient Integrated FETs Optimizedfor Low Duty Cycle Applications90 mΩ (High Side) and 60 mΩ(Low Side)High Initial Reference Accuracy4A CH1 / 2A CH2 Continuous Load CurrentLow-Side rDS(on)Loss-LessCurrent SensingFixed Soft Start : 1 msNon-Sinking Pre-Biased Soft StartPowergood700 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 TPS54494 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54494 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 TPS54494 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 TPS54494 to maintain high efficiency during lighter load conditions. The TPS54494 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 TPS54494 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.
The TPS54494 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54494 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 TPS54494 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 TPS54494 to maintain high efficiency during lighter load conditions. The TPS54494 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 TPS54494 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.