12Vin, ±5Vout, 1W Isolated SIP DC/DC module - Reference Design


Design files


The PMP4401 is a 12Vin, ±5Vout, 1W reference design module which is implemented in an industry standard SIP pinout.  It includes a constant on-time synchronous Fly-Buck controller LM25018.  The solution has high efficiency and good line and load regulation with 1,500V DC isolation.  The power module was designed with minimized components for cost sensitive applications.  PMP4394, PMP4401, and PMP4412-PM4415 have the same pinout and can be replaced by each other without modification.  The isolated bipolar outputs make the design ideal for powering noise sensitive circuits used in industrial applications.

  • Fly-Buck topology with 1,500V DC isolation
  • High efficiency
  • Good line and load regulation
  • Low cost solution with minimized component count
  • Industry standard pinout
  • Size: 19.8mm x 9mm x 5.8mm

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.

TIDU554.PDF (196 K)

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

SNVU432.PDF (475 K)

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

SNVR450.PDF (26 K)

Detailed schematic diagram for design layout and components

SNVR451.PDF (115 K)

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

TIDC641.ZIP (145 K)

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


Includes TI products in the design and potential alternatives.

Isolated DC/DC converters & modules

LM250187.5-48V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report SIP Module for P2P Replacement Sep. 23, 2014
Test report PMP4401 Test Results Apr. 18, 2014

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