5V Input, 1.8V Output, 10A Synchronous Buck Evaluation Module


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The TPS40040EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 10 A from a 5 V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for startup. The module uses the TPS40040 reduced pin count, low-voltage, synchronous buck controller.

  • 4.5 V to 5.5 V input range
  • 1.8 V fixed output, adjustable with single resistor
  • 10 A dc steady-state output current
  • 300 kHz switching frequency (fixed by TPS40040)
  • Single main switch MOSFET for both main switch and synchronous rectifier
  • Double-sided 2 active layer PCB with all components on top side
  • Active converter area of less than 1.5 in.² (i.e., <1.4 in. x 1.0 in.)
  • Convenient test points for probing switching waveforms and noninvasive loop response testing
Buck controllers (external switch)
TPS40040 2.25 to 5.5 V input, 300 kHz, synchronous buck controller with low pin count TPS40041 2.25 to 5.5 V input, 600 kHz, synchronous buck controller with low pin count
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TPS40040EVM-001 — 5V Input, 1.8V Output, 10A Synchronous Buck Evaluation Module

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Type Title Date
Certificate TPS40040EVM-001 EU Declaration of Conformity (DoC) 02 Jan 2019
Data sheet Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller datasheet (Rev. D) 12 Dec 2007
EVM User's guide Using the TPS40040-EVM-001 29 Jan 2007
User guide A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter 10 Apr 2006

Related design resources

Hardware development

TPS40041EVM-001 TPS40041 5V Input, 1.8V Output, 6A Evaluation Module

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