LMG3522R050RQST

Overview

The LMG3522R050RQST is a 650V GaN FET with an integrated gate driver, designed for high-power-density applications. It features a direct-drive architecture using a silicon driver and GaN device in series. The component supports switching frequencies up to 3.6MHz and offers adjustable slew rates from 15V/ns to 150V/ns via the RDRV pin. It operates with supply voltages between 7.5V and 18V. Protection mechanisms include cycle-by-cycle overcurrent protection with response times under 100ns and latch-up short-circuit protection. The device utilizes a top-cooled 12mm x 12mm VQFN package to separate electrical and thermal paths.

Feature Summary

• Integrated precision gate bias voltage enhances switching safety operating area compared to discrete solutions.
• Adjustable gate drive strength allows active control of electromagnetic interference and optimization of switching performance.
• Digital temperature reporting via variable duty cycle PWM output simplifies device load management.
• Advanced fault detection includes over-temperature, over-current, and UVLO monitoring.

Applications

• Switching mode power converters
• High-efficiency power supplies requiring increased power density
• Hard-switched topologies demanding low ringing

Procurement Notes

Verify the specific suffix 'RQST' against official Texas Instruments documentation to confirm automotive qualification status and tape-and-reel packaging specifications. Ensure compatibility with the required operating temperature range and check for any specific ordering restrictions or alternate suffixes that may affect availability or lead times.

Selection Notes

Select this component when designing systems requiring high switching frequencies up to 3.6MHz and precise control over electromagnetic interference through adjustable slew rates. Consider its integrated protection features for robust operation in hard-switched environments. Evaluate the top-cooled VQFN package suitability for thermal management requirements in compact form factors.

Part Context

This part belongs to the LMG352xR050 family of 650V GaN FETs with integrated drivers. It represents a shift towards direct-drive architectures that eliminate traditional cascode structures, offering superior switching performance and simplified design complexity for modern power electronics applications.

Replacement Considerations

Consult official substitution guides for compatible parts within the LMG352x series or other TI GaN products. Verify pinout compatibility and electrical parameter alignment before replacing existing designs.