UCC27423P

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The UCC27423P is a logic-input-compatible high-side gate driver for automotive power switches up to 120V. It includes an efficient drivers for bipolar embedded switching regulators, as well as loads commonly used in automotive applications, such as relays, LED drivers, DC-DC converters, MOSFETs, and IGBTs. This driver integrates a 27V avalanche-rugged high-side driver to drive higher voltage power switch designs. Its logic-compatible inputs allow designers to make use of 3D BMS systems and various other buses. With optional undervoltage lockout and watchdog timer modes, it enables reliable system start-up and protects against runaway conditions.

The UCC27423P belongs to the family of PMIC (Power Management IC) gate drivers. A gate driver is an IC that is used to drive the gate of a power MOSFET or IGBT in applications such as motor control, DC/DC conversion, and audio amplifiers. Gate drivers allow for high frequency switching and reduce ground bounce, eliminating the need for additional components like snubbers for higher efficiency and more reliable connections. Gate drivers are also used to drive optocouplers, which are used to improve signal noise impedance and isolate the control signals from the high-power control circuit.

The UCC27423P can provide high side gate driving capabilities up to 120V, it consists of two high-speed switching circuits that are capable of driving low gate capacitances. This enables use in a variety of high power applications like motor control, LED drivers, and DC/DC converters. It also has a high-current gate driver that can deliver up to 2.6A for driving higher power loads like IGBTs and MOSFETs. Additionally, the logic-compatible inputs can handle up to 5V logic levels for use with capacitive touch control applications and BMS (Battery Management System) designs.

The working principle of the UCC27423P is to provide a high-voltage, high-current gate drive capability to power MOSFET/IGBT modules, such as relays, DC/DC converters, and motor drives. It can provide up to 2.6A peak current to switch up to 120V loads. Its logic-compatible inputs facilitate various communications, such as CAN NI-CAN and LIN buses. The undervoltage lockout (UVLO) and watchdog timer (WDT) functions protect against runaway conditions and provide reliable system start-up.

The UCC27423P is designed to be an effective and reliable high-side gate driver for automotive systems, providing a cost-effective solution for high voltage, high current switching and logic control. With a high switching speed and high current capability, it can be used in a variety of power conversion design applications, from audio amplifiers to motor drives. Additionally, its logic-compatible inputs enable communication from 3D BMS systems and other buses.

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