6.6 kW, bi-directional, dual-active-bridge CLLLC resonant converter reference design


Design files


This reference design is a 6.6 kW, bi-directional, dual-active-bridge resonant converterdesign that allows 380 VDC to 600 VDC input and 280 VDC to 450 VDC output. This design uses the C2000 micro-controller TMS320F280049 along with silicon-carbide (SiC) driver UCC21530-Q1 to drive bridges both on primary and secondary sides. The design implements the daughter card approach to the C2000 controller (TMDSCNCD280049C) and SiC drivers (PMP21553 and PMP21561) and applies a Rogowski coil for synchronous rectifier (SR) optimization along with high bandwidth OpAmp LMV116MF. 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
  • Reach 98% peak efficiency at 280 V input
  • Board dimension 5.8" x 10.7" x 3"
  • High frequency, high voltage active synchronous rectifier control with Rogowski coil
Output voltage options PMP21495.1
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.

TIDT094.PDF (2315 K)

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

TIDRZ84A.PDF (492 K)

Detailed schematic diagram for design layout and components

TIDRZ85.PDF (109 K)

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

TIDRZ86.PDF (898 K)

Detailed overview of design layout for component placement

TIDRZ88.ZIP (3137 K)

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

TIDCFC5.ZIP (3381 K)

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

TIDRZ87.PDF (2843 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Digital isolators

ISO7820Highest isolation rating, dual-channel, 2/0, reinforced digital isolator

Data sheet: PDF | HTML
General-purpose op amps

LMV116Single, 12-V, 45-MHz operational amplifier

Data sheet: PDF | HTML
Isolated amplifiers

AMC1302-Q1Automotive, ±50-mV input, precision current sensing reinforced isolated amplifier

Data sheet: PDF | HTML
Isolated amplifiers

AMC13112-V input, precision voltage sensing reinforced isolated amplifier

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV713P-Q1Automotive 150-mA, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA320Precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet: PDF | HTML
Series voltage references

REF20333.3-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report 6.6 kW, bi-directional, dual-active-bridge CLLLC resonant converter ref design Mar. 07, 2019

Related design resources

Hardware development

TMDSCNCD280049C F280049C evaluation module for C2000™ MCU controlCARD™

Reference designs

PMP21553 Safety isolated primary SiC MOSFET driver reference design PMP21561 Safety isolated secondary SiC MOSFET driver reference design TIDM-02002 Bidirectional CLLLC resonant dual active bridge (DAB) reference design for HEV/EV onboard charger

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