400V – 12V/500W High Frequency Resonant Converter Reference Design Using High Voltage GaN Devices

(ACTIVE) PMP20289

Description & Features

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Key Document

Description

The PMP20289 was built and tested to verify the performance of a high frequency (>400kHz nominal switching frequency) LLC series resonant converter (LLC-SRC) implemented with Texas Instrument’s high voltage GaN FETs under nominal (390V to 12V) voltage conversion. The digital controller UCD3138A is used along with the UCD7138 SR controller to optimize LLC-SRC efficiency. TI’s high voltage direct drive GaNFET LMG3410 is used to enable fast switching and be able to minimize dead-time between half-bridge switches. The test results show that 96.8% peak efficiency is achieved at 24A load and 96.3% efficiency is achieved at 42A full load with a switching frequency over 350kHz in a 390V to 12V conversion.

Features
  • 400V – 12V/500W high frequency LLC series resonant converter
  • 350kHz resonant frequency and 500kHz switching frequency at 400V to 12V conversion
  • Utilize TI high voltage direct drive GaN FETs as input switches
  • Optimized LLC SR conduction with UCD7138/UCD3138A
  • Achieve peak 96.8% efficiency

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Parametrics
 PMP20289.1
(Output Voltage 1)
PMP20289.2
(Output Voltage 2)
PMP20289.3
(Output Voltage 3)
Vin (Min) (V)3702005.5
Vin (Max) (V)4004009
Vout (Nom) (V)1275
Iout (Max) (A)4211
Output Power (W)50475
Isolated/Non-IsolatedIsolatedIsolatedIsolated
Input TypeDCDCDC
TopologyHalf Bridge- LLCFlyback- DCMBuck- Synchronous

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
DCP021212  Miniature, 2W Isolated Unregulated DC/DC Converters  Isolated Module  Sample & Buy Not Available
ISO7821  High-Immunity, 5.7kVRMS Reinforced Dual-Channel 1/1 Digital Isolator, 100Mbps  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LMG3410  600-V 12-A Single Channel GaN Power Stage  Gallium Nitride (GaN)  Solutions  Sample & Buy View Design Kits & Evaluation Modules
LP3985  Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
OPA376  Precision, Low Noise, Low Iq Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS62163  3V-17V 1A Step-Down Converters with DCS-Control™  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules
UCC3813-4  Low Power Economy BiCMOS Current Mode PWM  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy Not Available
UCD3138A  UCD3138A Highly Integrated Digital Controller for Isolated Power  Digital Power Control Solutions  Sample & Buy View Design Kits & Evaluation Modules
UCD7138  Low-Side Power MOSFET Driver With Body Diode Conduction Sensing  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 (2)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 213 17 Aug 2016 873
PDF 4046 16 Aug 2016 534
Design files (30)
Title Abstract Type Size (KB) Date Views
ZIP 1697 17 Aug 2016 69
ZIP 1318 17 Aug 2016 42
ZIP 1313 17 Aug 2016 43
ZIP 1442 17 Aug 2016 46
ZIP 1728 17 Aug 2016 44
ZIP 236 17 Aug 2016 33
ZIP 890 17 Aug 2016 46
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ZIP 256 17 Aug 2016 50
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ZIP 2874 17 Aug 2016 65
ZIP 522 17 Aug 2016 49
PDF 1362 17 Aug 2016 39
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PDF 111 16 Aug 2016 376
PDF 86 16 Aug 2016 218
PDF 129 16 Aug 2016 168


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