Texas Instruments LMG3422R050 | Demoboard LMG3425EVM-041

Description

The LMG342xR050 GaN FET with integrated driver and protection enables designers to achieve new levels of power density and efficiency in power electronics systems. The LMG342xR050 integrates a silicon driver that enables switching speed up to 150 V/ns. TI’s integrated precision gate bias results in higher switching SOA compared to discrete silicon gate drivers. This integration, combined with TI's lowinductance package, delivers clean switching and minimal ringing in hard-switching power supply topologies. Adjustable gate drive strength allows control of the slew rate from 20 V/ns to 150 V/ns, which can be used to actively control EMI and optimize switching performance. The LMG3425R050 includes ideal diode mode, which reduces thirdquadrant losses by enabling adaptive dead-time control. Advanced power management features include digital temperature reporting and fault detection. The temperature of the GaN FET is reported through a variable duty cycle PWM output, which simplifies managing device loading. Faults reported include overtemperature, overcurrent, and UVLO monitoring.

Features

• Qualified for JEDEC JEP180 for hard-switching topologies
• 600-V GaN-on-Si FET with Integrated gate driver – Integrated high precision gate bias voltage
• 200-V/ns CMTI
• 3.6-MHz switching frequency
• 20-V/ns to 150-V/ns slew rate for optimization of switching performance and EMI mitigation
• Operates from 7.5-V to 18-V supply
• Robust protection
• Cycle-by-cycle overcurrent and latched shortcircuit protection with < 100-ns response
• Withstands 720-V surge while hard-switching
• Self-protection from internal overtemperature and UVLO monitoring
• Advanced power management
• Digital temperature PWM output
• Ideal diode mode reduces third-quadrant losses in LMG3425R050

Typical applications

• Merchant telecom rectifiers, Merchant network & server PSU
• Uninterruptable power supplies
• Solar inverters and industrial motor drives

More information

• Datasheet
• IC product information