24V, 480W Nominal 720W Peak, >93.5% Efficient, Robust AC/DC Industrial Power Supply Reference Design

(ACTIVE) TIDA-01494

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Key Document

Description

The TIDA-01494 reference design is a compact, high efficiency, 24-V DC, 480-W nominal, 720-W peak output reference design for industrial AC/DC power supplies. The circuit consists of a front-end continuous conduction mode (CCM) power factor correction (PFC) circuit followed by a robust LLC stage with synchronous rectification. The design enables efficiency greater than 93.5% over a wide load range, allowing the system to work without forced cooling. The LLC stage, based on the UCC256301, takes advantage of the ZCS avoidance feature in the UC256301 to enable peak output power, minimizing the PFC Bulk capacitor for meeting holdup requirements, while making the system robust to short circuit and over current conditions. The UCC24612-2 based synchronous rectifier helps in minimizing the losses in the output rectifier, while its advanced proportional gate drive and dead time optimization features helps to avoid shoot through and minimizes losses.

Features
  • Peak power conversion efficiency of 94% at 230V AC with average efficiency >93.5%
  • Delivers 20A continuous current and up to 30A peak current for 3 seconds
  • Power factor >0.99 and meets PF and current THD as per IEC 61000-3-2 Class A and EN55022 Class B Conducted Emission standard
  • ZCS avoidance in the LLC stage, enabling wider input voltage range operation and robustness
  • Over current, short circuit, over voltage and over temperature protection
  • Compact form-factor:  155mm x 125mm

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


  




Parametrics
 TIDA-01494.1
(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)265
Vout (Nom) (V)24
Iout (Max) (A)20
Output Power (W)480
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyBoost- PFC
Half Bridge- LLC

TI Devices (9)

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
CSD19501KCS  80V, N-Channel NexFET™ Power MOSFET, CSD19501KCS  Power MOSFET  Sample & Buy Not Available
INA181  26V, Bidirectional, Low- or High-Side Voltage Output Current Sense Amplifier  Current Sense Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TL103WA  Dual OpAmp With Internal Reference  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV3202  Dual, 40ns, microPower, Rail-to-Rail input Comparator with Push-pull outputs  Amplifiers  Sample & Buy Not Available
TLV704  24-V Input Voltage, 150-mA, Ultralow IQ Low-Dropout Regulators  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
TMP302  Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches  Temperature Sensors  Sample & Buy View Design Kits & Evaluation Modules
UCC24612  High-Frequency Multi-Mode Synchronous Rectifier Controller  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules
UCC256301  Wide Vin LLC Resonant Controller With High-Voltage Start Up Enabling Ultra-Low Standby Power  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28180  8-Pin Continuous Conduction Mode (CCM) PFC Controller  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.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 5889 10 Oct 2017 146
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 877 10 Oct 2017 47
ZIP 3622 10 Oct 2017 60
PDF 1490 10 Oct 2017 48
PDF 351 10 Oct 2017 37
PDF 118 10 Oct 2017 58
PDF 567 10 Oct 2017 158


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