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4.5V to 18V, 20A SWIFT™ Synchronous Buck Converter w/ PMBus™ and Frequency Synchronization


Package | PIN: RVF | 40
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $7.54
10-24 $6.78
25-99 $6.33
100-249 $5.68
250-499 $5.30
500-749 $4.61
750-999 $3.99
1000+ $3.91


  • PMBus 1.2 Compliant Converters: 20 A and 30 A
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.5 V to 5.5 V
  • 5 mm × 7 mm LQFN Package
  • Single Thermal Pad
  • Integrated 5.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
  • 500-mV to 1500-mV Reference for Adapative Voltage Scaling (AVS) and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control with Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • External Temperature Monitoring with 2N3904 Transistor
  • Programmable via the PMBus interface
    • VOUT_COMMAND and AVS VOUT Transition Rate
    • OvercurrentProtection with Thermal Compensation
    • UVLO, Soft-Start andSoft-Stop
    • PGOOD, OV, UV, OT Levels
    • FaultResponses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock
  • Footprint Compatible 20-A, 30-A Converters

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Texas Instruments  TPS544B25RVFT

The TPS544x25 devices are PMBus 1.2 Compliant, non-isolated DC-DCconverters with integrated FETs, capable of high-frequency operation and 20-A or 30-A currentoutput from a 5 mm × 7 mm package. High-frequency, low-loss switching,provided by an integrated NexFET™ power stage and optimizeddrivers, allows for very high-density power solutions. The PMBus interface enables the AVS throughVOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring includingoutput voltage, current and an optional external temperature. Response to fault conditions can beset to either restart, latch-off or ignore depending on system requirements.