High switching frequency, causes noise
MAX22701E, CMTI 300kV/µs
Reduces transistor dead time to increase efficiency


Maxim Integrated released the isolated gate driver 'MAX22701E' on the 19th.

Many switch-mode power supply applications adopt wide-bandgap (WBG) silicon carbide (SiC) transistors to improve power efficiency and transistor stability.

Since high switching frequencies cause transient phenomena that generate noise, they must be mitigated to prevent the problem of operation stopping.

The MAX22701E driver IC is used in switch-mode power supplies within industrial communication systems for solar inverters, motor drives, electric vehicles, energy storage systems, uninterruptible power supplies, data farms, and high-output, high-efficiency power supplies.

CMTI (Common-Mode Transient Immunity) is 300kV/µs and supports a minimum pulse width of 20ns with a maximum pulse width distortion of 2ns. The propagation delay between components is up to 2ns at an ambient temperature of 25°C and up to 5ns in an operating temperature range of -40 to 125°C. This reduces the dead time of the transistor, thereby increasing overall efficiency.

The MAX22701E is available in an 8-pin narrow body SOIC package (3.90 mm x 4.90 mm) and operates in a temperature range of -40 to 125°C.

Timothy Leung, Director of Industrial and Healthcare at Maxim Integrated, stated, “As SiC technology is being adopted to provide small and efficient power supplies, Maxim has maximized system efficiency by increasing system uptime.”