When looking into the isolated DC/DC conversion stage, the most frequently used topology is the full-bridge resonant converter LLC. Another very typical topology is the full-bridge phase shifted Dual Active Bridge DAB. Both topologies are zero-voltage-switching (ZVS) techniques that serve to
Multiple variants can be used for primary and secondary side with additional advantages and compromises. It can easily be connected in parallel or series both on the primary side and on the secondary side to best suit the current and voltage needs of the fast EV Charger. The configuration strategy is also defining the component break down voltage either 1200V or 650V. For high efficiency requirements SiC-MOSFET on the primary side and SiC Schottky diodes on the secondary side are the preferred choice compared to silicone based components.
The resonant LLC converter topology was benchmarked using various component technologies at different resonant frequencies to rate efficiency and costs.
Vincotech fastPACK product line is offering a comprehensive product portfolio with H-bridge and ultrafast rectifier bridge topologies featuring:
|flow 0||H-Bridge||650 V - 900 V - 1200 V||11 kW - 22 kW||Show products|
|flow 1||H-Bridge||650 V - 1200 V||22 kW - 30 kW||Show products|
|H-Bridge||1200 V||50 kW||In Concept|
|flow E1||H-Bridge||650 V - 1200 V||15 kW - 25 kW||Show products|
|flow E2||H-Bridge||650 V - 1200 V||Up to 30 kW||Show products|
|flow 0||Ultrafast Bridge Rectifier||650 V - 1200 V||15 kW - 30 kW||Show products|
|flow 1||Ultrafast Bridge Rectifier||650 V - 1200 V||35 kW - 50 kW||Show products|
|flow E1||Ultrafast Bridge Rectifier||1200 V - 1700 V||13 kW - 25 kW||Show products|
* Estimation based on a typical charger operation point