High Density 900mV 220 A 6 Phase DC-DC Buck Converter with PMBus Interface Reference Design


Design files


PMP11208 has same hardware as 1.0V PMP9738 and 0.6V PMP10393 but demonstrates operation at 900mV output up to 240 A off 11V, 12V and 13V inputs. While the design is in quasi fixed frequency mode for 1.0Vout and in fixed on time mode for 600mVout, it can be in either mode at 900mVout depending upon load and actual Vin. Testing focused upon detailed static and dynamic loading in and between both modes to show a seamless transition between the two modes.

  • Same hardware as 1.0Vout PMP9738, but with 900mV output testing up to 240A
  • DCAP+ control for excellent step load response, SVID and PMBus interfaces
  • Thermal performance & dynamic response verified at 900mV output off 11V, 12V & 13V
  • Focus of evaluation board is on ease of electrical testing with almost all parts on top side   
    • Rich test interface including PMBus socket, 5V & 3.3V biases and onboard high speed dynamic test load
Output voltage options PMP11208.1
Vin (Min) (V) 10.8
Vin (Max) (V) 13.2
Vout (Nom) (V) .9
Iout (Max) (A) 220
Output Power (W) 198
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Synchronous^Buck- Multiphase
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAA5.PDF (3555 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Design file that contains information on physical board layer of design PCB

TIDRFY1.PDF (5688 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

TPS536616-Phase, D-CAP+™ Step-Down VR12.x Server CPU VCORE

Data sheet: PDF
Power stages

CSD95372BQ5M60A Synchronous Buck NexFET™ Smart Power Stage

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP11208 Test Results Jul. 07, 2015

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