Texas Instruments LMG3624 650V 170mΩ GaN Power Stage
Texas Instruments LMG3624 650V 170mΩ GaN Power Stage is intended for switch-mode power-supply applications. The LMG3624 ICs simplify design and reduce component count by integrating the GaN FET and gate driver in an 8mm by 5.3mm QFN package. Programmable turn-on slew rates provide EMI and ringing control. Compared to traditional current-sense resistors, the current-sense emulation reduces power dissipation and allows the low-side thermal pad to be connected to the cooling PCB power ground. These gate drivers are ideal for AC/DC adapters and chargers, Mobile wall charger design, USB wall power outlet, auxiliary-power supplies, SMPS power supply for TVs, and LED power supplies.The Texas Instruments LMG3624 supports burst-mode operation with low quiescent currents, converter light-load efficiency requirements, and fast start-up times. Protection features include Under-Voltage Lockout (UVLO), cycle-by-cycle current limit, and overtemperature protection. Overtemperature protection is reported with the open-drain FLT pin.
Features
- 650V 170mΩ GaN power FET
- Integrated gate driver with low propagation delays and adjustable turn-on slew-rate control
- Current-sense emulation with high bandwidth and high accuracy
- Cycle-by-cycle overcurrent protection
- Overtemperature protection with FLT pin reporting
- 240µA AUX quiescent current
- 50µA AUX standby quiescent current
- 26V maximum supply and input logic pin voltage
- 8mm x 5.3mm QFN package with thermal pad
Applications
- AC/DC adapters and chargers
- AC/DC USB wall outlet power supplies
- AC/DC auxiliary power supplies
- Television power supplies
- Mobile wall charger design
- USB wall power outlet
- Auxiliary-power supplies
- SMPS power supply for TV
- LED power supply
Functional Block Diagram
Opublikowano: 2024-08-13
| Zaktualizowano: 2025-09-19
