UCC28740-Q1

The UCC28740-Q1 is a high-efficiency, isolated gate driver designed for use in automotive and industrial power conversion systems. It supports operation from a wide input voltage range, typically 8 V to 36 V, making it suitable for applications requiring robust performance under varying supply conditions. The device integrates a high-speed, low-latency driver capable of delivering up to 5 A peak current, enabling fast switching of power MOSFETs or IGBTs in high-frequency converters. This IC features an isolated gate drive architecture using a transformer-based coupling method, which provides galvanic isolation between the control circuitry and the power stage—critical for safety and noise immunity in harsh environments. The isolation barrier offers a rated isolation voltage of up to 5 kV RMS, meeting stringent automotive safety standards such as ISO 26262 and AEC-Q100 Grade 1 compliance. The UCC28740-Q1 includes built-in protection features such as undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown, enhancing system reliability and preventing damage during fault conditions. Its adaptive dead-time control ensures optimal timing between high-side and low-side switches, minimizing switching losses and improving overall efficiency. Additionally, the device supports adjustable dead time via external resistors, allowing fine-tuning for different load conditions and semiconductor characteristics. Designed for use in DC-DC converters, motor drives, and on-board chargers (OBCs) for electric vehicles, the UCC28740-Q1 excels in demanding applications where space, thermal management, and electromagnetic compatibility (EMC) are critical. It operates efficiently across a broad temperature range—from -40°C to +125°C—making it ideal for automotive-grade environments with extreme thermal variations. The device also incorporates a robust bootstrap circuit for high-side drive, eliminating the need for an auxiliary power supply in many configurations. Its compact 8-pin SOIC package enables high-density PCB layouts while maintaining excellent thermal performance through efficient heat dissipation paths. With integrated diagnostics and fault reporting capabilities, the UCC28740-Q1 simplifies system-level monitoring and enhances maintainability in complex power systems.