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

image of Texas Instruments' TPS54227 D-CAP2™ Buck ConverterTexas 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.

  • 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 application
    • 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)

TPS54227 Buck Converter

ImageManufacturer Part NumberDescriptionFunctionOutput ConfigurationAvailable Quantity

Evaluation Module

ImageManufacturer Part NumberDescriptionMain PurposeOutputs and TypeAvailable Quantity
EVAL MODULE FOR TPS54227TPS54227EVM-686EVAL MODULE FOR TPS54227DC/DC Converter1, Non-Isolated2 - Immediate
13 - Factory Stock
View Details
Published: 2011-08-25