TPSI2140-Q1

The TPSI2140-Q1 is a high-voltage, isolated gate driver from Texas Instruments designed for driving high-side and low-side power MOSFETs in automotive and industrial applications. It features a robust isolated power supply with an integrated transformer-based DC-DC converter that delivers up to 3.3 W of output power, enabling standalone operation without an external bias supply. This makes it ideal for systems requiring galvanic isolation between control and power stages. The device supports gate drive voltages up to 25 V, with a peak current capability of 2 A, allowing fast switching and efficient operation of power semiconductors such as SiC and IGBTs. Its propagation delay is typically 100 ns, ensuring precise timing control critical in high-frequency switching topologies like half-bridge or full-bridge inverters. The input-to-output isolation voltage is rated at 3.75 kV RMS for 1 minute, meeting stringent safety standards for automotive and industrial environments. Built-in protection features include under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown, enhancing system reliability under fault conditions. The TPSI2140-Q1 also includes a configurable dead-time control block, which helps prevent shoot-through currents in complementary switch configurations—critical for maintaining efficiency and preventing device damage. Designed for AEC-Q100 Grade 1 qualification, the TPSI2140-Q1 operates reliably across a wide temperature range from –40°C to +150°C, making it suitable for harsh environments such as electric vehicle (EV) onboard chargers, motor drives, and solar inverters. Its compact 8-pin SOIC package reduces board space requirements while maintaining excellent thermal performance through optimized layout and internal heat dissipation design. This gate driver integrates both high-side and low-side drivers in a single IC, simplifying circuit design and reducing component count compared to discrete solutions. It accepts standard TTL-compatible logic inputs and provides rail-to-rail output swing, ensuring compatibility with microcontrollers and digital signal processors commonly used in modern power electronics systems. The internal charge pump and bootstrap functionality eliminate the need for external components to generate high-side gate drive voltage, further streamlining implementation.