The TC4421EPA is a high-speed power MOSFET and IGBT driver IC (Integrated Circuit) manufactured by Microchip Technology. It is specifically designed to drive medium-to-high power devices, such as power MOSFETs and IGBTs, in various applications including motor control, switching power supplies, and DC-DC converters.
One of the key features of the TC4421EPA is its ability to control high-side and low-side output channels independently. This means that it can drive both the high-side and low-side switches in a half-bridge configuration, allowing for more efficient and flexible control of power devices.
The IC operates with a wide range of supply voltages, from 4.5V up to 18V, and can handle peak output currents of up to 9A. This makes it suitable for driving medium-to-large power devices. Additionally, the TC4421EPA has a fast rise and fall time of typically 30ns, enabling high-speed switching of power devices, thus improving overall system performance.
The TC4421EPA also includes an undervoltage lockout (UVLO) feature, which provides protection against undervoltage conditions. It ensures that the IC does not operate if the supply voltage falls below a specific threshold, preventing possible damage to the power devices connected to it.
Another notable feature is the low propagation delay and shoot-through prevention circuitry
