TIDA-00514
適用於電源多工和反向電流阻斷的負載開關參考設計
TIDA-00514
概覽
In systems that can be powered from multiple power sources, achieving a seamless transition when switching between sources can be challenging, especially when it is also neccesary to block reverse current flow. This reference design demonstrates how two load switches can be used to MUX power between two supplies and block reverse current.
特點
- TPS22959 - 2:1 power multiplexer (MUX):
- 5.5 V, 15 A, 4.4 mΩ (typical at VBIAS = 5 V)
- Optimized RC circuit ensures make-before-break logic
- Control via single GPIO to select supply
- TPS22959 - reverse current blocking:
- 5.5 V, 15 A, 8.8 mΩ (typical at VBIAS = 5 V)
- Back-to-back switches block reverse current when disabled
- Adjustable rise time
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 | |||
|---|---|---|---|---|---|---|
| * | 設計指南 | Load Switches for Power MUXing and Reverse Current Blocking Design Guide | 2015/6/29 |