The LMG3624 is a 650V 170mΩ GaN power FET intended for switch-mode power-supply applications. The LMG3624 simplifies design and reduces component count by integrating the GaN FET and gate driver in a 8mm by 5.3mm QFN package.
Programmable turn-on slew rates provide EMI and ringing control. The current-sense emulation reduces power dissipation compared to the traditional current-sense resistor and allows the low-side thermal pad to be connected to the cooling PCB power ground.
The LMG3624 supports converter light-load efficiency requirements and burst-mode operation with low quiescent currents 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.
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LMG3624 650V 170 mΩ GaN FET With Integrated Driver and Current-Sense Emulation datasheet (Rev. A) | PDF | HTML | 2024年 6月 12日 |
| Technical article | The benefits of low-power GaN in common AC/DC power topologies | PDF | HTML | 2024年 1月 30日 | |
| Application brief | Maximize System Efficiency With Integrated Current Sensing From TI GaN | PDF | HTML | 2023年 11月 30日 | |
| Product overview | Designing With the LMG362x Family of Low-Power GaN FETs | PDF | HTML | 2023年 11月 28日 |
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LMG3624EVM-081 使用具備整合電流感測模擬功能與 GaN FET 的 LMG3624，展示 65-W USB Type-C® 電力傳輸 (PD) 離線轉接器的高效率和高密度。輸入支援通用 90 Vac 至 265 Vac，單輸出在最大電流 3-A 時可設爲 5 V、9 V 和 15 V，最大電流 3.25-A 時則為 20 V，可透過 USB PD 介面控制器進行調整。高達 200-kHz 額定值的高頻運作，可實現較小的解決方案尺寸，同時多模式運作可保持高效率。輸出則採用同步整流以提升效率。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (REQ) | 38 | Ultra Librarian |
The purpose of this tool is to aid in the design of the main power stage components of a Quasi-Resonant Flyback Converter (QR) with the use of LMG36XX integrated GaN FET.
Rev A