TPS40000 Low Input (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source Only | TI.com

TPS40000 (ACTIVE)

Low Input (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source Only

Low Input  (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source Only - TPS40000
Datasheet
 

Recommended alternative parts

  • TPS40040  -  TPS40040 is a next-generation 5.5V, 15A step-down controller in a small WSON package

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
  • Source-Only Current or Source/Sink Current
  • Versions for Starting into VOUT Pre-Bias
  • 10-Lead MSOP PowerPad™ Package for Higher Performance
  • Thermal Shutdown
  • Internal Boostrap Diode
  • Fixed-Frequency, Voltage-Mode Control
    • TPS40000/1/4 300-kHz
    • TPS40002/3/5 600-kHz
  • 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
TPS40000 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    
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    
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