这是一个Buck
电路,但是怎么计算流经LED的电流和整个电路的电流啊?
难道是按照下面说明书上的计算吗?不过那样算下来貌似不怎么对啊?求高手指教,谢谢!
The A6213 is a buck regulator designed for driving a high-current
LED string. It u
tilizes average current mode control to maintain
constant LED current and consistent brightness. The LED current
level is easily programmable by selection of an external sense
resistor, with a value determined as follows:
iLED = VCSREG / RSENSE
where VCSREG = 0.2 V typical.
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补充内容 (2016-5-31 21:00):
C7、R4可以拿掉,这样你去算电流就差不多了,另外支路电流和回路总电流是不同的,你需要分清楚。
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