6.6 kW, bi-directional CLLLC resonant converter reference design using PCB winding transformer


Design files


This 6.6 kW, bi-directional, dual-active-bridge resonant converter reference design allows 380 VDC to 600 VDC input and 280 VDC to 450 VDC output. PCB winding transformer and Rogowski coil synchronous rectifier (SR) control are applied in this design for power density and efficiency optimization. A daughter card approach is implemented in this design including a C2000™ controller (TMDSCNCD280049C), SiC drivers (PMP22001 and PMP22002) and bias supply (PMP22003). With 500-kHz resonant frequency and 300-kHz ~ 700-kHz operational frequencies, this design is able to reach peak 98% efficiency.

  • 500 kHz resonant frequency, 300 kHz to 700 kHz operational frequency
  • Capable of bi-directional energy flow
  • Reaches 98% peak efficiency at 280 V input
  • Board dimension 5.8" x 7.5" x 3"
  • High frequency, high voltage active synchronous rectifier control with Rogowski coil
Output voltage options PMP21999.1
Vin (Min) (V) 380
Vin (Max) (V) 600
Vout (Nom) (V) 280
Iout (Max) (A) 24
Output Power (W) 6720
Isolated/Non-Isolated Isolated
Input Type DC
Topology Full Bridge- Resonant
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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.

TIDT129.PDF (2363 K)

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

TIDM141.ZIP (583 K)

Detailed schematic diagram for design layout and components

TIDM142.ZIP (396 K)

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

TIDM143.ZIP (1473 K)

Detailed overview of design layout for component placement

TIDM145.ZIP (8523 K)

Files used for 3D models or 2D drawings of IC components

TIDCFL5.ZIP (8676 K)

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

TIDM144.ZIP (2169 K)

PCB layer plot file used for generating PCB design layout


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Technical documentation

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Type Title Date
* Test report 6.6-kW, Bi-Directional CLLLC Resonant Converter Reference Design Aug. 20, 2019

Related design resources

Hardware development

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