36W, Universal Input, >90% Efficiency, Dual Output Aux Supply Ref Design for PSU

(ACTIVE) TIDA-00709

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Key Document

Description

The TIDA-00709 is a 36-W, dual output, auxiliary power supply with provision to accept both wide ranges of DC as well as AC input. Based on the input, this TI Design can be used as an adapter or auxiliary power supply designed for use in power converters targeted for server, telecom, and industrial system applications. This reference design is a quasi-resonant (QR) flyback converter implemented using the UCC28740 constant voltage-constant current (CV-CC) flyback controller with optocoupled feedback for voltage and primary-side regulation (PSR) for current. For improved efficiency, the TIDA-00709 uses synchronous rectification with sync controller UCC24636 and low RDS(on) MOSFET for main 12- V_ISO/2.75-A output. Hardware is designed and tested to pass conducted emissions, surge and EFT requirements. Additionally, the design has a built-in eFuse for multiple faults isolation for main output rail without effecting any other output.

Features
  • High Efficiency of > 90% With AC Input and > 92% With DC Input
  • Minimum Efficiency > 86.5% at 10% Load Aids to Meet 80Plus Titanium Standard of Server PSUs
  • Low Standby Power (≈ 120 mW) Aids to Meet NoLoad Condition Limits of DoE Level VI and EU CoC Tier-I
  • Compact Form-Factor to Achieve High Power Density Solutions: – DC/DC: 40 mm × 45 mm – AC/DC: 70 mm × 45 mm
  • Dual Output: 12 V/0.25 A and 12 V_ISO/2.75 A

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (5)

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
ATL431  2.5V Low-Iq Adjustable Precision Shunt Regulator  Voltage Reference  Sample & Buy View Design Kits & Evaluation Modules
CSD19531Q5A  100V, 5.3mOhm, SON5x6 NexFET™ Power MOSFET  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
TPS25924  12V, 5A, 28mΩ eFuse with BFET Driver for Reverse Current Protection  Protection, Monitoring and Hot Swap  Sample & Buy View Design Kits & Evaluation Modules
UCC24636  Synchronous Rectifier Controller With Ultra-Low Standby Current  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28740  Constant-Voltage, Constant-Current Flyback Controller Using Opto-Coupler Feedback  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

More literature (1)
Title Date Type
Snubbing the flyback converter 07 Nov 2016
External articles (1)
Title Date Type
Design a flyback primary switch snubber 07 Nov 2016
Datasheet (1)
Title Abstract Type Size (KB) Date Views
PDF 1206 05 Jul 2017
Application notes (2)
Title Abstract Type Size (KB) Date Views
PDF 231 09 Oct 2015 1,668
PDF 1975 15 Feb 2001 685
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2621 06 Feb 2017 463
Design files (6)
Title Abstract Type Size (KB) Date Views
PDF 135 18 Nov 2016 186
ZIP 253 02 Nov 2016 123
ZIP 4004 02 Nov 2016 102
PDF 379 02 Nov 2016 64
PDF 91 02 Nov 2016 46
PDF 251 02 Nov 2016 394
Related Tools & Software

Reference Designs (2)

Software (1)




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