TPS54227 D-CAP2™ Buck Converter



Texas Instruments TPS54227 D-CAP2™ Buck Converter

Texas Instruments' new adaptive on-time D-CAP2™ mode 4.5 V to 18 V input, 2 A synchronous step-down SWIFT converter

Texas Instruments' TPS54227 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54227 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54227 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The TPS54227 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5 V to 18 V VIN input. The output voltage can be programmed between 0.76 V and 7 V.   TPS54227 Datasheet

  Features   Applications
  • D-CAP2™ mode enables fast transient response
  • Low output ripple and allows ceramic output capacitor
  • Wide VIN input voltage range: 4.5 V to 18 V
  • Output voltage range: 0.76 V to 7.0 V
  • Highly efficient integrated FETs optimized for lower duty cycle applications
    • 155 mΩ (high side) and 108 mΩ (low side)
  • High efficiency, less than 10 µA at shutdown
  • High initial bandgap reference accuracy
  • Adjustable soft start
  • Pre-Biased soft start
  • Cycle by cycle over current limit
  • 700 kHz switching frequency (fSW)

    Wide range of applications for
    low voltage systems
  • Digital TV power supply
  • High definition Blu-ray Disc™ players
  • Networking home terminal
  • Digital set top box (STB)

Buy Now
Texas Instruments
Part Number
Digi-Key
Part Number
Packaging Description Package  
TPS54227DDAR 296-28781-2-ND Tape & Reel D-CAP2™ synchronous
buck converter
8-SOIC
(0.154", 3.90mm Width)
Exposed Pad
TPS54227 Datasheet
296-28781-1-ND Cut Tape
296-28781-6-ND Digi-Reel

Evaluation Module
Texas Instruments
Part Number
Digi-Key
Part Number
Description  
TPS54227EVM-686 296-29084-ND Evaluation Module for TPS54227 TPS54227EVM-686 User's Guide