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.
| Type | Title | 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 | ||
| Selection guide | DC/DC Buck Controller Solutions Selection Guide | 06 Feb 2018 | ||
| Application note | Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co | 11 Jul 2014 | ||
| User guide | Using the TPS40007 | 03 Mar 2004 |
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