Datasheet Texas Instruments TPS40007TDA3 — Ficha de datos

TPS40007-DIE
www.ti.com SLUSBS7 – NOVEMBER 2013 LOW-INPUT, HIGH EFFICIENCY SYNCHRONOUS BUCK CONTROLLER
Check for Samples: TPS40007-DIE FEATURES 1 2 Low Output Voltage
Predictive Gate Driveв„ў N-Channel MOSFET
Drivers for Higher Efficiency
Externally Adjustable Soft-Start and
Overcurrent Limit
Frequency Voltage-Mode Control
Source/Sink With VOUT Prebias
Thermal Shutdown
Internal Boostrap Diode APPLICATIONS Networking Equipment
Telecom Equipment
Base Stations
Servers
DSP Power
Power Modules DESCRIPTION
The TPS40007-DIE is a controller for low-voltage, non-isolated synchronous buck regulators. This controller
drives 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. …