Gate drivers emulate optocoupler inputs
Single-channel isolated gate drivers in the 1ED301xMC121 series from Infineon are pin-compatible replacements for optocoupler-based designs. They replicate optocoupler input characteristics, enabling drop-in use without control circuit changes, while using non-optical isolation internally to deliver higher CMTI and improved switching performance for SiC applications.
Their opto-emulator input stage uses two pins and integrates reverse voltage blocking, forward voltage clamping, and an isolated signal transmitter. With CMTI exceeding 300 kV/µs, 40-ns propagation delay, and 10-ns part-to-part matching, the devices deliver robust, high-speed switching performance.
The series includes three variants—1ED3010, 1ED3011, and 1ED3012—supporting Si and SiC MOSFETs as well as IGBTs. Each delivers up to 6.5 A of output current to drive power modules and parallel switch configurations in motor drives, solar inverters, EV chargers, and energy storage systems. The drivers differ in UVLO thresholds: 8.5 V, 11 V, and 12.5 V for the 1ED3010, 1ED3011, and 1ED3012, respectively.
The 1ED3010MC121, 1ED3011MC121, and 1ED3012MC121 drivers are available in CTI 600, 6-pin DSO packages with more than 8 mm of creepage and clearance.
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