High Density 200 A (255 A Peak) 6 Phase DC-DC Buck Converter with PMBus Interface Reference Design
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Advanced DCAP+ control is used to provide the high speed dynamic control needed for CPU, Memory and ASIC applications. Six high current synchronous power stages provide the high currents and low losses needed for these applications. Multi-phase also allows output ripple cancellation and effective higher bandwidth control for a given switching frequency. PMP9738 focuses on ease of electrical testing and ability to make changes "on the fly" thru the PMBus interface. On board bias supplies and a high speed dynamic load round out the rich test interface.

  • Multiple fully synchronous power stages for high currents and lowest losses
  • DCAP+ control for excellent step load response, SVID and PMBus interfaces
  • Output voltage, switching frequency, number of phases can be adjusted "on the fly" through the PMBus interface
  • Focus of evaluation board is on ease of electrical testing with almost all parts on top side
  • Rich test interface including PMBus socket, 5V and 3.3V biases and high speed dynamic test load
  • Schematic, BOM, layout and Test Report focusing on thermal performance and load dynamics

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(Output Voltage 1)
Vin (Min) (V)10.8
Vin (Max) (V)13.2
Vout (Nom) (V)1
Iout (Max) (A)200
Output Power (W)200
Input TypeDC
TopologyBoost- Synchronous
Buck- Multiphase
Designed forASIC

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD95372BQ5M  60A Synchronous Buck NexFET™ Smart Power Stage  MOSFETs  Sample & Buy Not Available
TPS53661  6-Phase, D-CAP+™ Step-Down VR12.x Server CPU VCORE  Step-down (buck)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD95372BQ5M LSON-CLIP (DQP)| 12 Download Download
TPS53661 Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 924 14 Jan 2015
Design files (5)
Title Type Size (KB) Date
ZIP 918 14 Jan 2015
PDF 5686 14 Jan 2015
PDF 395 14 Jan 2015
PDF 114 14 Jan 2015
PDF 296 14 Jan 2015

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