Silicon carbide for electric vehicle fast-charging
The number of electric vehicles in the world is quickly growing every day and the demand for faster ‘refueling’ speeds is growing just as fast. Wolfspeed and Skyworks have combined forces to create a fast-charging solution for EVs that utilizes impressive advancements in Silicon Carbide technology.
By replacing traditional Si components with Wolfspeed Silicon Carbide upgrades, DC fast charger designs can deliver incredible gains in system efficiency, power density, and reliability. These fast charger designs are typically constructed with stacked groups of power conversion blocks that are each 20kW to 60kW.
Skyworks Si823Hx gate driver board interfaces with Wolfspeed's clamped inductive load evaluation boards for dynamic testing of the Wolfspeed WolfPACK™ modules.
The board features the Si823H2x two-channel gate driver with built-in dead-time control and overlap protection to safely drive the modules. It also uses the Si88421x digital isolator with built-in DC/DC converter to isolate temperature feedback and provide the on-board isolated gate power supply. User-configurable gate resistors, status LEDs, and test points make evaluation and prototyping simple and effective.
Block Diagram
CRD25AD12N-FMC Fast Charging Reference Design
Products
Wolfspeed WolfPACK™ Silicon Carbide Power Modules
These power modules provide clean, reliable power for energy conversion systems and offer incredibly low losses in a package that lends itself extremely well to automation and manufacturing at scale.
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Skyworks Solutions Si823Hx Isolated Gate Drivers
Robust gate drivers for Silicon, GaN, or SiC-based power converter systems such as SMPS or inverters. These gate drivers feature robust 30V driver VDD, low latency, noise filtering, 125kV/μs high CMTI, -5V voltage withstand on output pins, and over-temperature protection.
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