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TPS63020如何控制电流输出？将其变成一个恒流源。
可以调节FB端的电压，来调节输出端电压，从而达到恒流的目的？
Hi
恒流源是设计输出电流恒定，此时反馈是通过电路侦测给到FB, 输出电压受负载影响，例如TI有提供TPS630XX的恒流LED控制：
http://www.ti.com.cn/cn/lit/an/slva419b/slva419b.pdf
除了上述直接侦测sense电阻外，你还可以用运放sense电阻，在讲信号给到FB.
