TC4422ESM

The TC4422ESM is an MOSFET/IGBT gate driver integrated circuit (IC) from Microchip Technology, Inc. It is a low-input drive stage that is most often utilized in power switch circuits, such as in dc-to-dc switching converters, motor controller drives, high-current dc relays, ac-to-dc rectifiers and electronic thermal management systems. It is designed to provide accurate switching and reliable protection features to the switch circuit, allowing for a longer operational life of the converter, motor controller, relay or switch.

The TC4422ESM is classified as a PMIC – Gate Driver. It is mounted on a 20-pin package, making it ideal for applications where board space is a factor, such as in portable electronic devices. Its low power consumption and wide supply voltage range (4.5V to 38V) provide further advantages for these types of applications. Its built-in thermal shutdown and load-short protection for both channels further add to its robust design.

The TC4422ESM is an MOSFET driver, which allows for wide controllability over the MOSFET switch. The driver includes two complementary N-channel and P-channel MOSFETs, one for the high side and one for the low side. Two dedicated inputs are provided for each MOSFET: one for driving the high side and the other for the low side. The driver also features an enable input, allowing for multiple independent MOSFET enable signals.

The TC4422ESM is designed to provide extremely accurate switching and reliable protection features to the switch circuit, allowing the circuit to operate at its optimal temperatures. It is able to drive more than one MOSFET, allowing for multiple channels of control over the switch circuit. The IC offers three outputs that can be programmed to drive either high-side or low-side MOSFETs, allowing for greater flexibility in the application circuit.

The TC4422ESM provides two outputs for driving each high- and low-side MOSFETs. These outputs are programmed through the AEMUX (Address-Enable Multiplexer) programming interface. The AEMUX programming interface allows the user to program the outputs to drive either high- or low-side MOSFETs, allowing the circuit to easily scale up or down, depending on the application. The device also features a third output that provides an “open drain” of the low-side MOSFET, allowing the user to control multiple MOSFETs at once.

The TC4422ESM has two integrated protection features. The first is the thermal shutdown feature, which will shut down the device when the temperature exceeds a preset limit. The second is the load-short protection feature, which will protect both the high- and low-side MOSFETs from short-circuiting. The IC also includes a built-in noise filter that suppresses switching transients and reduces the amount of high-frequency noise generated by the switching circuits.

In summary, the TC4422ESM is an integrated MOSFET/IGBT gate driver designed to provide accurate switching and reliable protection features to switch circuits. It is housed in a 20-pin package, provides three outputs that can be programmed to drive either high- or low-side MOSFETs, and can control multiple MOSFETs at once. It features a thermal shutdown feature, a load-short protection feature, and a built-in noise filter.