Calculation tool
TPS40009
2.25V-5.5V, 600 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation
Data sheet
TPS40009
- Operating Input Voltage 2.25 V to 5.5 V
- Output Voltage as Low as 0.7 V
- 1% Internal 0.7 V Reference
- Predictive Gate Drive™ N-Channel MOSFET Drivers for Higher Efficiency
- Externally Adjustable Soft-Start and Overcurrent Limit
- Fixed-Frequency Voltage-Mode Control
- TPS40007, 300 kHz
- TPS40009, 600 kHz
- Source/Sink with VOUT Prebias
- 10-Lead MSOP PowerPad™ Package for Higher Performance
- Thermal Shutdown
- Internal Boostrap Diode
- APPLICATIONS
- Networking Equipment
- Telecom Equipment
- Base Stations
- Servers
- DSP Power
- Power Modules
PowerPAD and Predictive Gate Drive are trademarks of Texas Instruments Incorporated.
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.
Technical documentation
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View all 3 | Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LOW INPUT BUCK CONTROLLER, TPS40007/9 datasheet (Rev. B) | 08 Feb 2005 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| EVM User's guide | Using the TPS40009EVM-001 | 03 Mar 2004 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS40007EVM-001 — TPS40007EVM-001 Evaluation Module
The TPS40007 is a voltage-mode, synchronous buck PWM controller that uses TI's proprietary Predictive Gate Drive™ technology to wring maximum efficiency from step-down converters. This controller provides a bootstrap circuit to allow the use of an N-channel MOSFET as the topside buck switch (...)
User guide: PDF
Evaluation board
TPS40009EVM-001 — TPS40009EVM-001 Evaluation Module
The TPS40009 is a voltage-mode, synchronous buck PWM controller that uses TI's proprietary Predictive Gate Drive™ technology to wring maximum efficiency from step-down converters. This controller provides a bootstrap charging circuit to allow the use of an N-channel MOSFET as the topside buck (...)
User guide: PDF
Simulation model
TPS40009 TINA-TI Average Reference Design (Rev. A)
SLVM036A.TSC (62 KB) - TINA-TI Reference Design
Simulation model
TPS40009 TINA-TI Average Spice Model (Rev. A)
SLVM037A.ZIP (7 KB) - TINA-TI Spice Model
Simulation model
TPS40009 Unencrypted PSpice Model Package (Rev. B)
SLVC175B.ZIP (228 KB) - PSpice Model
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
Ordering & quality
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