TPS40003 Series
2.25 to 5.5V input, 600kHz, synchronous buck controller with Predictive Gate Drive™ Technology
Manufacturer: Texas Instruments
Catalog(3 parts)
| Part | Clock Sync▲▼ | Duty Cycle (Max)▲▼ | Output Type | Synchronous Rectifier▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Output Configuration | Supplier Device Package | Function | Output Phases▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Mounting Type | Control Features | Package / Case | Frequency - Switching▲▼ | Topology | Number of Outputs▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS40003DGQG4Buck Regulator Positive Output Step-Down DC-DC Controller IC 10-HVSSOP | 0.9300000071525574 ul | Transistor Driver | 5.5 V | 2.25 V | Positive | 10-HVSSOP | Step-Down | 1 ul | 85 °C | -40 °C | Surface Mount | Current Limit, Enable, Soft Start | 10-MSOP, 10-PowerTFSOP | 600000 Hz | Buck | 1 ul | ||
0.9300000071525574 ul | Transistor Driver | 5.5 V | 2.25 V | Positive | 10-HVSSOP | Step-Down | 1 ul | 85 °C | -40 °C | Surface Mount | Current Limit, Enable, Soft Start | 10-MSOP, 10-PowerTFSOP | 600000 Hz | Buck | 1 ul | |||
0.9300000071525574 ul | Transistor Driver | 5.5 V | 2.25 V | Positive | 10-HVSSOP | Step-Down | 1 ul | 85 °C | -40 °C | Surface Mount | Current Limit, Enable, Soft Start | 10-MSOP, 10-PowerTFSOP | 600000 Hz | Buck | 1 ul |
Key Features
• Operating Input Voltage 2.25 V to 5.5 VOutput Voltage as Low as 0.7 V1% Internal 0.7 V ReferencePredictive Gate Drive™ N-Channel MOSFET Drivers for Higher EfficiencyExternally Adjustable Soft-Start and Overcurrent LimitSource-Only Current or Source/Sink CurrentVersions for Starting into VOUTPre-Bias10-Lead MSOP PowerPad™ Package for Higher PerformanceThermal ShutdownInternal Boostrap DiodeFixed-Frequency, Voltage-Mode ControlTPS40000/1/4 300-kHzTPS40002/3/5 600-kHzAPPLICATIONSNetworking EquipmentTelecom EquipmentBase StationsServersDSP PowerPower ModulesPowerPAD™ and Predictive Gate Drive™ are trademarks of Texas Instruments Incorporated.Operating Input Voltage 2.25 V to 5.5 VOutput Voltage as Low as 0.7 V1% Internal 0.7 V ReferencePredictive Gate Drive™ N-Channel MOSFET Drivers for Higher EfficiencyExternally Adjustable Soft-Start and Overcurrent LimitSource-Only Current or Source/Sink CurrentVersions for Starting into VOUTPre-Bias10-Lead MSOP PowerPad™ Package for Higher PerformanceThermal ShutdownInternal Boostrap DiodeFixed-Frequency, Voltage-Mode ControlTPS40000/1/4 300-kHzTPS40002/3/5 600-kHzAPPLICATIONSNetworking EquipmentTelecom EquipmentBase StationsServersDSP PowerPower ModulesPowerPAD™ and Predictive Gate Drive™ are trademarks of Texas Instruments Incorporated.
Description
AI
The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI’s proprietary Predictive Gate Drive™ technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated.
The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor connected to the SS/SD pin. The SS/SD pin is also used for shutdown.
The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI’s proprietary Predictive Gate Drive™ technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated.
The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor connected to the SS/SD pin. The SS/SD pin is also used for shutdown.