12Vin, 3.3V/1.7A Low Cost, Small Form Factor, Synchronous Buck Reference Design
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Description & Features

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Key Document


The PMP9725 reference design generates a 3.3V output from a 12V input, using the TPS562209 synchronous buck converter.  This converter uses the DCAP2 control method to minimize output capacitance while eliminating feedback compensation components and still providing an excellent load transient response.  The converter switches at 650kHz.  The peak efficiency of this design is 90%.

  • Utilizes DCAP2 control method
  • 90% peak efficiency
  • Small 15mm x 8mm footprint
  • Low profile < 3mm
  • Test report available

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Schematic/Block Diagram

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Design Guide

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Design Files

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(Output Voltage 1)
Vin (Min) (V)10
Vin (Max) (V)14
Vout (Nom) (V)3.3
Iout (Max) (A)1.7
Output Power (W)5.61
Input TypeDC
TopologyBuck- Synchronous

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS562209  17 V Input, 2A Synchronous Step-Down Regulator in SOT-23  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS562209 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 849 16 Jul 2015
Design files (4)
Title Type Size (KB) Date
ZIP 197 16 Jul 2015
PDF 74 16 Jul 2015
PDF 78 16 Jul 2015
PDF 98 16 Jul 2015

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