TPS40000DGQ
LTBLOW INPUT (2.25V-5.5V) 300 KHZ FREQUENCY, SYNCHRONOUS BUCK CONTROLLER, SOURCE ONLY
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TPS40000DGQ
LTBLOW INPUT (2.25V-5.5V) 300 KHZ FREQUENCY, SYNCHRONOUS BUCK CONTROLLER, SOURCE ONLY
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Technical Specifications
Parameters and characteristics for this part
| Specification | TPS40000DGQ |
|---|---|
| Clock Sync | False |
| Control Features | Current Limit, Soft Start, Enable |
| Duty Cycle (Max) [Max] | 94 % |
| Frequency - Switching | 300 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 10-PowerTFSOP, 10-MSOP |
| Package / Case | 3 mm, 0.118 in |
| Supplier Device Package | 10-HVSSOP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 5.5 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.25 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 560 | $ 1.63 | |
| Texas Instruments | TUBE | 1 | $ 2.32 | |
| 100 | $ 1.92 | |||
| 250 | $ 1.38 | |||
| 1000 | $ 1.03 | |||
Description
General part information
TPS40000 Series
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.
Documents
Technical documentation and resources