PMP9781
適用於可攜式音訊應用的小型、高效率分裂軌電源供應參考設計
PMP9781
概覽
Differential Headphone amplifiers require positive and negative voltages. In this reference design, both voltages are generated from a single input voltage with an all integrated split-rail converter. It only requires one inductor and a minimal amount of external components to achieve a high efficiency power supply that keeps the distortion of the system very low. End users benefit from High Fidelity audio performances with longer playback time in their mobile application.
特點
- 90% Peak Efficiency
- Tiny solution size: 5.9x6.9 mm
- Low Distortion: THD+N < 0.00075%
- Programmable outputs
- Small BOM — only 7 external components required
- This circuit design is tested. All necessary software, a Test Report and a Design File are included.
| 輸出電壓選項 | PMP9781.1 |
|---|---|
| Vin (最小值) (V) | 2.5 |
| Vin (最大值) (V) | 5.5 |
| Vout (Nom) (V) | 5 |
| Iout (最大) (A) | .04 |
| 輸出功率 (W) | .2 |
| 隔離式/非隔離式 | Non-Isolated |
| 輸入類型 | DC |
| 拓撲結構 | Boost- Synchronous^Linear Regulator |
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 | |||
|---|---|---|---|---|---|---|
| 應用說明 | Small High-Efficiency Split-Rail Supply for Portable Audio Applications | 2015/6/2 |