340W Digital Controlled LLC Resonant Half-Bridge DC-to-DC Power Conversion Reference Design


Design files


This design is a LLC resonant half-bridge DC-DC power converter with digital control using 3138ACC32EVM-149 daughter-card. The daughter-card control functions with preloaded firmware providing the required control functions for a LLC resonant half-bridge converter.  The TIDA-00512 (3138ALLCEVM-150) accepts a DC input from 350VDC to 400VDC, and outputs a nominal 12VDC with full load output power of 340W, or full output current of 29A.

As seen at APEC

  • Synchronous rectification
  • Optimal diode emulation and dead time of synchronous rectification
  • Cycle-by-cycle current limiting with duty cycle matching
  • Automatic mode switching between LLC mode and PWM mode
  • Test points to facilitate device and topology evaluation
Output voltage options TIDA-00512.1
Vin (Min) (V) 350
Vin (Max) (V) 400
Vout (Nom) (V) 12
Iout (Max) (A) 29
Output Power (W) 348
Isolated/Non-Isolated Isolated
Input Type DC
Topology Half Bridge- LLC

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.

TIDU810.PDF (486 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRD43.PDF (408 K)

Detailed schematic diagram for design layout and components

TIDRD44.PDF (120 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRD45.PDF (320 K)

Detailed overview of design layout for component placement

TIDC932.ZIP (390 K)

Design file that contains information on physical board layer of design PCB


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Technical documentation

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Type Title Date
Test report TIDA-00512 Test Results Feb. 27, 2015

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