12Vin Compact Dual 10A Point-of-Load Reference Design with PMBus Using NexFET Power Block


Design files


The PMP8553 reference design is a compact dual 10A POL solution with PMBus in 0.75" by 0.975" size (19mm x24.8mm). It showcases NexFET power block CSD87330 in high density PoL. It also adds PMBus capability to low current rails.  It is easy to configure as dual 10A or single 20A output with resistor options. It is versatile for digital high density low-current power rails (<20A).

  • 8V to 14V in, 3.3V/8A and 1V/10A out
  • Peak efficiency 89% at 1Vout, 300kHz
  • Total solution size: 0.75" x 0.975" (19mm x 24.8mm)
  • Option for single 20A
  • PMBus enabled margining and sequencing
Output voltage options PMP8853.1 PMP8853.2
Vin (Min) (V) 8 8
Vin (Max) (V) 14 14
Vout (Nom) (V) 3.3 1
Iout (Max) (A) 8 10
Output Power (W) 26.4 10
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- Synchronous Buck- Synchronous
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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.

TIDUE13.PDF (878 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

TIDCE91.ZIP (163 K)

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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

TPS40422Dual Output or Multiphase Synchronous Buck Controller with PMBus

Data sheet: PDF | HTML

CSD87330Q3D30-V, N channel synchronous buck NexFET™ power MOSFET, SON 3 mm x 3 mm power block, 20 A

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP8853 Test Results Dec. 11, 2017

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