36W, Universal Input, >90% Efficiency, Dual Output Aux Supply Ref Design for PSU TIDA-00709 (ACTIVE)

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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

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5V low-Iq adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
CSD19531Q5A  100V, N ch NexFET MOSFET™, single SON5x6, 6.4mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
TPS25924  12V, 5A, 28mΩ eFuse with BFET Driver for Reverse Current Protection  Power switches  Sample & Buy View Design Kits & Evaluation Modules
UCC24636  Synchronous Rectifier Controller With Ultra-Low Standby Current  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28740  Constant-Voltage, Constant-Current Flyback Controller Using Opto-Coupler Feedback  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ATL431 Download Download
CSD19531Q5A VSONP (DQJ)| 8 Download
TPS25924 Download Download
UCC24636 Download Download
UCC28740 Download Download

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Technical Documents

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More literature (1)
Title Date Type
Snubbing the flyback converter 07 Nov 2016
Datasheet (1)
Title Type Size (KB) Date
PDF 1365 23 Mar 2018
Application notes (3)
Title Type Size (KB) Date
PDF 119 27 Nov 2018
PDF 231 09 Oct 2015
PDF 1975 15 Feb 2001
User guides (1)
Title Type Size (KB) Date
PDF 2621 06 Feb 2017
Design files (6)
Title Type Size (KB) Date
PDF 135 18 Nov 2016
ZIP 253 02 Nov 2016
ZIP 4004 02 Nov 2016
PDF 379 02 Nov 2016
PDF 91 02 Nov 2016
PDF 251 02 Nov 2016
Related Tools & Software

Reference Designs  ( 1 )

Software (1)



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