PMP7327
適用於總線維持，具有升壓轉換器的 28V DC 輸入超級電容充電器參考設計
PMP7327
概覽
This reference design uses the BQ24640 super cap charging controller to charge a large bank of super caps to a voltage below the input bus voltage. During an input bus dropout, the energy from the super caps is used to power a boost converter that can supply 10A of output current at 26.2V. This output can be used to hold up the bus voltage for up to 10 seconds (260W for 10 sec).
特點
- Boost Converter efficiency greater than 95% at Vin = 18V and 1A - 10A loads
- Boost holdup supports 28V bus for longer than 27 seconds using a large 28F super cap bank while delivering 260W
- Super cap charger provides a constant 3A charge current for a controlled startup time
- Low cost design requires less than 100mm x 100mm
| 輸出電壓選項 | PMP7327.1 | PMP7327.2 |
|---|---|---|
| Vin (最小值) (V) | 26.6 | 12 |
| Vin (最大值) (V) | 29.4 | 25 |
| Vout (Nom) (V) | 25 | 26.2 |
| Iout (最大) (A) | 3 | 10 |
| 輸出功率 (W) | 75 | 262 |
| 隔離式/非隔離式 | Non-Isolated | Non-Isolated |
| 輸入類型 | DC | DC |
| 拓撲結構 | Buck- Synchronous | Boost- Non Sync |
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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| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 測試報告 | PMP7327 Test Results (Rev. A) | 2015/9/28 |