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12V Input, 3.3V 1.5A and 1.2V and 2.5A Dual Sync Buck Converter Evaluation Module



  • 12 V +10% /–20% input range
  • 5.0 V and 3.3 V fixed output voltage, adjustable with resistor change
  • 1.5A (3.3V) and 2.5A (1.2V) Steady State Current
  • 600kHz switching frequency (Fixed by TPS54291)
  • Internal switching MOSFET and external Rectifier Diode
  • Double Sided 2 Active Layer PCB with all components on top side (Test Point signals routed on internal layers)
  • Active Converter area of 1.1 square inches (0.86 × 1.28)
  • Convenient test points for probing switching waveforms and non-invasive loop response testing

Texas Instruments  TPS54291EVM-431

The TPS54291EVM-431 evaluation module (EVM) is a dual synchronous buck converter providing fixed3.3V and 1.2V outputs at up to 1.5A and 2.5A respectively from a 12V bus. The EVM is designed to start-up from a single supply, so no additional bias voltages are require for start-up. The module uses the TPS54291 600kHz Dual Synchronous Buck Converter with integrated MOSETs.TPS54291EVM-431 is designed to use a regulated 12V (+10% /–20%) bus to produce two regulatedpower rails, 3.3V at 1.5A and 1.2V at 2.5A. TPS54291EVM-431 is designed to demonstrate the TPS54291 in a typical 12-V bus system while providing a number of test points to evaluate the performance of the TPS54291 in a given application. The EVM can be modified to other output voltages by changing some ofthe components.