Introduction
This reference design, TIDA-010054, presents a robust implementation of a single-phase Dual Active Bridge (DAB) DC/DC converter. It is specifically engineered for the demanding requirements of Level 3 electric vehicle (EV) charging stations. The DAB topology is chosen for its inherent advantages, including soft-switching capabilities, reduced component count, and high efficiency, making it ideal for applications where power density, cost-effectiveness, weight, galvanic isolation, high-voltage conversion, and reliability are paramount.
The modular and symmetrical nature of the DAB design allows for scalability by paralleling converters to achieve higher power outputs. Furthermore, its bidirectional operational mode supports both charging and discharging of EV batteries, aligning with emerging trends like Vehicle-to-Grid (V2G) technology. This design leverages advanced components from Texas Instruments, such as SiC MOSFETs and intelligent gate drivers, to achieve superior performance metrics, including peak efficiencies up to 98.7% and a power density exceeding 2 kW/L.
Key Features
- Bidirectional dual-active-bridge with Single- (SPS) and Extended-phase-shift (EPS) control.
- Smart Gate driver UCC21710 for SiC MOSFET protection.
- TMS320F280039 controller for digital control implementation.
- Isolated voltage and current sensing for accurate measurements.
- Maximum power output of 10 kW.
- High peak efficiency of 98.7% and full load efficiency of 98%.
- Wide input voltage range (700V-800V DC) and output voltage range (250V-500V DC).
- 100 kHz PWM switching frequency with reduced transformer size enabled by planar magnetics.
- Soft switching without auxiliary components.
Applications
- DC fast charging stations
- DC fast charging power modules
- Power conversion systems (PCS)
- Hybrid, electric, and powertrain systems
Resources
For detailed information, schematics, and design files, please refer to the official Texas Instruments product folder for TIDA-010054. For technical support, engage with TI's E2E™ support experts at https://e2e.ti.com/.
