
Texas Instruments LMG3522R050 650V GaN FET
Texas Instrument LMG3522R050 650V GaN FET with integrated driver and protection targets switch-mode power converters and enables designers to achieve new power density and efficiency levels. The LMG3522R050 integrates a silicon driver that enables switching speeds up to 150Vns. TI offers integrated precision gate bias, which results in higher switching SOA when compared to discrete silicon gate drivers. This integration, combined with TI’s low-inductance package, delivers minimal ringing and clean switching in hard-switching power supply topologies. The adjustable gate drive strength allows control of the slew rate from 15V/ns to 150V/ns. This control can be used to actively control EMI and optimize switching performance.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
- 650V GaN-on-Si FET with integrated gate driver
- Integrated high precision gate bias voltage
- 200V/ns FET hold-off
- 3.6MHz switching frequency
- 15V/ns to 150V/ns slew rate for optimization of switching performance and EMI mitigation
- Operates from 7.5V to 18V supply
- Advanced power management
- Digital temperature PWM output
- Robust protection
- Cycle-by-cycle overcurrent and latched short-circuit protection with <100ns response
- Withstands 720V surge while hard-switching
- Self-protection from internal overtemperature and UVLO monitoring
- Top-side cooled 12mm × 12mm VQFN package separates electrical and thermal paths for lowest power loop inductance
Applications
- Switch-mode power converters
- Merchant network and server PSU
- Merchant telecom rectifiers
- Solar inverters and industrial motor drives
- Uninterruptible power supplies
Simplified Block Diagram

Publicado: 2024-01-29
| Atualizado: 2024-07-25