LM5036
- High integration controller for small form factor, high-density DC-DC power converters
- Integrated 100-V, 100-mA auxiliary bias supply
- Fully regulated pre-biased start-up
- Enhanced cycle-by-cycle current limiting with pulse matching for low and high primary FETs
- Optimized maximum duty cycle for primary-side FETs
- Voltage-mode control with input voltage feed-forward
- 100-V high-voltage start-up regulator
- Configurable latch, OVP operation
- Integrated 100-V, 2-A MOSFET drivers for primary-side FETs
- Programmable dead-time between primary-side and synchronous rectifier (SR) FETs
- Create a custom design using the LM5036 with the Excel Calculator Tool or WEBENCH Power Designer
The LM5036 PWM controller, with integrated auxiliary bias supply, offers high power density for industrial isolated power applications. It contains all the features necessary to implement half-bridge power converters, using voltage-mode control, with input voltage feed-forward. This controller is intended to operate on the primary side of an isolated converter with DC input voltage up to 100 V. The controller includes features that improve power density and reliability while reducing system cost:
- An integrated fly-buck converter as auxiliary bias supply. Provides bias power for both primary and secondary circuits, with a minimum of external components.
- Fully regulated pre-bias start-up. Eliminates output voltage over-shoot or dips even when starting into a pre-charged output capacitor.
- Enhanced cycle-by-cycle peak current limit with pulse matching. The controller limits both positive and negative current. Pulse matching ensures equal pulse width for low and high side devices, to avoid transformer saturation. Output current limit is approximately constant across the full range of input voltage.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM5036 Half-Bridge PWM Controller with Integrated Auxiliary Bias Supply datasheet (Rev. C) | PDF | HTML | 2021/10/10 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
SLUC654 — LM5036 Design Calculator
PMP40500 — 54-VDC 輸入、12-V 42-A 輸出半橋參考設計
此 12-V、42-A 輸出半橋式參考設計適合有線網路園區與分公司交換器中的匯流排轉換器。此設計具高效率及各種故障保護 (過電流和短路)。此設計採用 3 kVRMS 基本及功能隔離式閘極驅動器 UCC21220D, UCC21220AD, UCC21222D 及 5.7-kRMS 強化隔離式閘極驅動器 UCC21540D, UCC21540DWK and UCC21541DW 以提供效率比較。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RJB) | 28 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。