TPS40007 2.25V-5.5V, 300 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation | TI.com

TPS40007 (ACTIVE)

2.25V-5.5V, 300 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation

2.25V-5.5V, 300 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation - TPS40007
Datasheet
 

Description

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.

Features

  • 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.

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Number of Phases Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Control mode
TPS40007 Order now 2.25     5.5     0.7     4     15     1     1     300     300     1.5     Enable
Synchronous Rectification    
94     -40 to 85     Catalog     MSOP-PowerPAD | 10     Controller     Voltage Mode    
TPS40000 Samples not available 2.25     5.5     0.7     4     15     1     1     300     300     1.5     Enable
Synchronous Rectification    
94     -40 to 85     Catalog     MSOP-PowerPAD | 10     Controller     Voltage Mode    
TPS40009 Order now 2.25     5.5     0.7     4     15     1     1     600     600     1.5     Enable
Synchronous Rectification    
83     -40 to 85     Catalog     MSOP-PowerPAD | 10     Controller     Voltage Mode