30A SIMPLE SWITCHER® Power Module with 3 to 14.5V Reference Design with PMBus


Design files


The reference design PMP9464 utilizes the LMZ31530, a 30A SIMPLE SWITCHER® Power Module. The LMZ31530 SIMPLE SWITCHER® power module is an easy-to-use integrated power solution that combines a 30-A DC/DC converter with power MOSFETs, a shielded inductor, and passives into a low profile, QFN package.

This design has a LM25056 on the front end. The LM25056 combines high performance analog and digital technology with a PMBus compliant SMBus/I2C interface to accurately measure the operating conditions of electrical systems including computing and storage blades connected to a backplane power bus. This allows the user to monitor the real time values of Vin, Iin, Pin and Pout; as well as temperature and peak power. These values are reported via PMBus™/SMBus™/I2C.

PMP9464 also enables the user to margin the output voltage setting, by slewing it up or down. This is done with the LM10011 VID programmable current DAC. The LP2951 supplies a 3.3V rail for the LM3881 power sequencer. The LM3881 sequencer can be used for sequencing other off board power supplies.

  • Adjustable from 0.6V to 3.3 Vout
  • 30W Pout for powering wide range of FPGA core rails and asics
  • Peak Efficiency at  85% for 0.9V
  • Switching Frequency 500kHz
  • Design ideal for Power Characterization during design phase and subsequent cost saving
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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.

TIDU502.PDF (1035 K)

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

TIDRA54.PDF (351 K)

Detailed schematic diagram for design layout and components

TIDRA55.PDF (60 K)

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

TIDC571.ZIP (689 K)

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


Includes TI products in the design and potential alternatives.

Buck modules (integrated inductor)

LMZ315303V to 14.5V, 30A Step-Down Power Module in 15x16x5.8mm QFN Package

Data sheet: PDF | HTML
Digital power monitors

LM250563 to 17V, 12-bit, pmbus output current/voltage/power/temperature monitor

Data sheet: PDF
Linear & low-dropout (LDO) regulators

LP2951100-mA, 30-V, low-dropout voltage regulator with power good & enable

Data sheet: PDF | HTML
Precision DACs (≤10 MSPS)

LM100111% Accuracy 4/6-Bit VID Voltage Programmer for Point of Load Regulator w/ Adj Start-Up Current

Data sheet: PDF

LM38813 rail simple power sequencer with adjustable time delay

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9464 Test Results Aug. 21, 2014

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