98% Efficiency Analog 24V to 36V, 500W Backup and 50W Charger Reference Design for DC UPS TIDA-01558 (ACTIVE)

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Key Document

Description

This analog, bidirectional power conversion reference design has a discharge or boost stage of 500 W and charge or buck stage of 50 W. This reference  design is made for 24-V battery pack and 30-V to 38-V bus voltage for use in DC-UPS, battery backup unit (BBU), local energy storage (LES) and DC/DC brick modules. The design’s high efficiency of >98% discharge and >95% charge optimizes the thermal management and extends battery backup time.

Features
  • High efficiency of 98.3% peak and 97.4% at full load as backup power supply
  • Delivers high power output 20A, 30V as backup supply and charges battery at 2A during normal operation
  • Fast changeover in <500 μs from charging to backup supply mode enables fast power transfer during power failure
  • Compact solution with built-in heat sink (65 mm × 60 mm × 18 mm)
  • Typical efficiency of ≈ 95%, maximum efficiency of > 98.5%
  • Built-in analog solution for transition and CC-CV logic implemented reducing solution cost

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18532KCS  60V, N ch NexFET MOSFET™, single TO-220, 4.2mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM293A  Dual Differential Comparator  Amplifiers  Sample & Buy Not Available
LM358A  Dual Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
LMR14020  SIMPLE SWITCHER, 4V to 40V, 2A 2.2MHz Step-Down Regulator with Low IQ  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TLV704  24V Input Voltage, 150mA, Ultra-Low-Iq Low-Dropout (LDO) Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS43060  Low Iq, 58V, Synchronous Boost Controller w/ Wide Input Voltage & 7.5V Gate Drive for Standard FETs  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18532KCS Download
LM293A Download Download
Download Download
LM358A Download Download
Download Download
Download Download
Download Download
LMR14020 Download Download
TLV704 Download Download
TPS43060 Download

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Technical Documents

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Datasheet (1)
Title Type Size (KB) Date
PDF 1784 04 Sep 2014
User guides (1)
Title Type Size (KB) Date
PDF 1017 14 Dec 2017
Design files (6)
Title Type Size (KB) Date
ZIP 783 14 Dec 2017
ZIP 1300 14 Dec 2017
PDF 587 14 Dec 2017
PDF 134 14 Dec 2017
PDF 106 14 Dec 2017
PDF 209 14 Dec 2017
Related Tools & Software

Development Tools (1)

Name Part Number Tool Type
SPICE-based analog simulation program  TINA-TI  Circuit Design & Simulation 

Models (1)

Title Category Type Size (KB) Date Views
TIDA-01558 Simulation TINA-TI Reference Design ZIP 58 KB 04 May 2018

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