30A SIMPLE SWITCHER® Power Module with 3 to 14.5V Reference Design with PMBus PMP9464 (ACTIVE)

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Description

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.

Features
  • 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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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM10011  1% Accuracy 4/6-Bit VID Voltage Programmer for Point of Load Regulator w/ Adj Start-Up Current  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM25056  17-V PMBus Current/Voltage/Power/Temperature Monitor  Current sense amplifiers  Not Available View Design Kits & Evaluation Modules
LM3881  3 Rail Simple Power Sequencer with Adjustable Time Delay  Power management  Sample & Buy View Design Kits & Evaluation Modules
LMZ31530  3V to 14.5V, 30A Step-Down Power Module in 15x16x5.8mm QFN Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LP2951  30V, 100mA Micropower Voltage Regulators with Shutdown  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM10011 Download Download
LM25056 Download Download
LM3881 Download Download
LMZ31530 Download Download
LP2951 Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 967 21 Aug 2014
Design files (3)
Title Type Size (KB) Date
ZIP 689 21 Aug 2014
PDF 60 21 Aug 2014
PDF 351 21 Aug 2014

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