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LM5176: TEC驱动

Part Number: LM5176

在‘ 面向 40W TEC 的双向 TEC 驱动器设计
’这篇文章中,我想知道电流的流向问题。

当输出比输入电压高时,电流是否流回输入电源,如果是的话那输入电源需要具有灌电流的能力

当输出比输入低的时候,电流又流向哪里了呢