PMP41133
Automotive 800V to 48V-300W μDC-DC converter reference design
PMP41133
概覽
This reference design demonstrates a half-bridge LLC converter with an input voltage range from 450V to 800 (950V) by using the UCC256612. The design implements HV start-up and isolated gate driver, UCC5350 for 800 (950V) operation. The design replaces the optocoupler with an opto- emulator ISOM8110 to mitigate the signal degradation by current transfer ratio (CTR) over time. The design is an excellent choice for automotive μDC-DC and data center AUX applications.
特點
- Wide input operation voltage ranges from 450V to 800V (950V) by dedicated LLC controller
- > 96% full load efficiency with Schottky Rectifier in secondary side
- HV start-up circuit to lower the loss after system power-on
- Capability to drive low side-SiC FET directly
- Adaptive dead time control to minimize the conduction of 3rd quadrant current
- Opto-emulator design to mitigate signal degradation by CTR over time
| 輸出電壓選項 | PMP41133.1 |
|---|---|
| Vin (最小值) (V) | 450 |
| Vin (最大值) (V) | 800 |
| Vout (Nom) (V) | 48 |
| Iout (最大) (A) | 6.5 |
| 輸出功率 (W) | 312 |
| 隔離式/非隔離式 | Isolated |
| 輸入類型 | DC |
| 拓撲結構 | Half Bridge- LLC |
已開發完全組裝的電路板，僅供測試與性能驗證，且為非賣品。
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| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 測試報告 | Automotive 800V to 48V-300W μDC-DC Converter Reference Design | PDF | HTML | 2026/7/29 |