TIDA-00379
110-VAC 至 5-VDC @ 30-mA 非隔離式電源供應參考設計
TIDA-00379
概覽
This 110-VAC to 5-VDC at 30-mA non-isolated power supply reference design uses a low-power, low-cost, off-line buck converter and a low-noise, low-dropout voltage regulator to generate a non-isolated 5-V/30-mA output directly from a 110-VAC line input with under 10-mV output ripple across no-load and full-load conditions. Off-line converters are powered directly from the AC line by using a rectifier and capacitive filter and do not require a large 60-Hz transformer, thereby eliminating the heaviest and costliest component of a typical transformer-based power supply. The entire reference design is implemented on a single-sided, double-layer board size of just 63.2 mm x 38.1 mm with a bill-of-material (BOM) count of 20 devices.
特點
- Solution does not require a custom transformer
- Optimized, low-cost BOM
- Input: 110-VAC (85- to 130-VAC), Output voltage: 5-VDC
- Load current: 500-uA to 30-mA
- Output ripple of less than 10mV
- Conducted emissions: CISPR 22, Class B
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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技術文件
| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 設計指南 | 110-V AC to 5-V DC at 30-mA Non-Isolated Power Supply Design Guide (Rev. C) | 2015/7/15 |