MAX5055AASA+T

PMIC - Gate Drivers

The MAX5055AASA+T is a gate driver integrated circuit that is specifically designed to control the switching speed of MOSFETs and IGBTs. It is integrated into the typically used packages of single and dual-gate driver system power integrated circuits. This IC is ideal for driving large capacity semiconductors in power supplies, motor drives, and general purpose electronics that are used in the industrial and automotive markets. The MAX5055AASA+T is an all-in-one gate driver that includes an adjustable dead time generator, under voltage lockout, over-temperature protection, self reset capabilities, and a wide range of drive currents.

The underlying principle of the gate driver is the transfer of sufficient supply energy to the FET/IGBT gate. This is done in order to enable a rapid turn-off of the device. With the wide range of adjustable output drive currents, the MAX5055AASA+T is suitable for a variety of application fields, including automotive, industrial, and telecom.

Features

The MAX5055AASA+T has a range of features that make it an ideal choice for gate driver applications:

• Wide range of adjustable output drive currents (up to 20A peak)
• Under voltage lockout (UVLO) protects against accidental mis-application of lower power supplies
• Over-temperature protection ensures long-term reliability
• Self-reset capability in the event of over current and short circuit conditions
• Enable/ disable input with isolation
• Adjustable dead time generator

Application Fields

The MAX5055AASA+T is suitable for a range of applications, including motor drives, power supplies, and general purpose electronics. In automotive applications, the IC can be used to drive large capacity semiconductors in power conversion systems, such as DC/DC converter and battery chargers. In industrial applications, it can be used in inverters, UPS, and variable speed drives.

Working Principle

The MAX5055AASA+T works on a principle of supplying sufficient energy to the FET/IGBT gate\'s conduction channel. This allows for a rapid turn-off of the device. The frequency of drive pulses provided by the gate driver is adjustable with reference to an external clock, or directly by a capacitor. With the adjustable dead time generator, the drive signals duration can be adjusted to provide a suitable pulse sequence.

The adjustable output drive current allows the gate driver to provide the optimal amount of energy required to switch the FET/IGBT, while also protecting the device from over-current and short-circuit conditions. The over-temperature protection ensures long-term reliability and enhanced operational safety. The UVLO feature provides protection against accidental mis-application of lower power supplies.

Conclusion

The MAX5055AASA+T is an integrated gate driver IC specifically designed to control the switching speed of MOSFETs and IGBTs. It is suitable for a range of application fields, including automotive, industrial, and telecom. The MAX5055AASA+T has a range of features, including adjustable output drive current up to 20A peak, UVLO, over-temperature protection, self-reset capability, enable/ disable input with isolation, and adjustable dead time generator.