137W Holdup Converter for Storage Server Reference Design
PMP20818
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical Documents

Support & Training

Order Now


See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document

Description

PMP20818 is a holdup reference design that uses the LM3481 non-synchronous boost and LM5141-Q1 synchronous buck controllers. When the 12V input supply is available, the buck converter is disabled, and the boost converter charges a capacitive holdup bank. In the event of a power outage, the boost converter is disabled, and the buck converter is enabled to holdup the 12V input rail for 15ms with a load of 12.5A.

Features
  • Boost followed by synchronous buck
  • Peak current-mode control
  • Buck turns on automatically at input power loss
  • No user control required
  • Low dropout buck maximizes holdup time

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

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

Download Design Files


Parametrics
 PMP20818.1
(Output Voltage 1)
PMP20818.2
(Output Voltage 2)
Vin (Min) (V)1312
Vin (Max) (V)5050
Vout (Nom) (V)1150
Iout (Max) (A)12.5.05
Output Power (W)137.52.5
Isolated/Non-IsolatedNon-IsolatedNon-Isolated
Input TypeDCDC
TopologyBuck- SynchronousBoost- Non Sync

TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18534Q5A  60V, N ch NexFET MOSFET™, single SON5x6, 9.8mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD19538Q2  100V, N ch NexFET MOSFET™, single SON2x2, 59mOhm  MOSFETs  Sample & Buy Not Available
LM3481  2.97V to 48V High-Efficiency Controller for Boost, SEPIC and Flyback  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
LM5141-Q1  Wide-Input 2.2MHz Low-Iq Synchronous Buck Controller  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18534Q5A VSONP (DQJ)| 8 Download
CSD19538Q2 WSON (DQK)| 6 Download Download
LM3481 Download Download
LM5141-Q1 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 1378 11 Dec 2017
Design files (6)
Title Type Size (KB) Date
ZIP 350 11 Dec 2017
ZIP 894 11 Dec 2017
PDF 956 11 Dec 2017
PDF 145 11 Dec 2017
PDF 102 11 Dec 2017
PDF 252 11 Dec 2017

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles