TIDA-01558
98% Efficiency Analog 24V to 36V, 500W Backup and 50W Charger Reference Design for DC UPS
TIDA-01558
Overview
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
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.
TIDUDL9.PDF (1017 K)
Reference design overview and verified performance test data
TIDRUP7.PDF (209 K)
Detailed schematic diagram for design layout and components
TIDRUP8.PDF (106 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRUP9.PDF (134 K)
Detailed overview of design layout for component placement
TIDRUQ1.ZIP (1300 K)
Files used for 3D models or 2D drawings of IC components
TIDCEA3.ZIP (783 K)
Design file that contains information on physical board layer of design PCB
TIDRUQ0.PDF (587 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MOSFETs
CSD18532KCS — 60-V, N channel NexFET™ power MOSFET, single TO-220, 4.2 mOhm
Data sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | 98% Eff, All Analog, 24V to 36V, 500W Backup and 50W Charger Ref Des for DC UPS | Dec. 14, 2017 |
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Design tools & simulation
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