Selection of AC/DC LED Power Driver Chip Types (II): Lost Path
People who have been exposed to LEDs know that due to the steep forward voltage current characteristics of LEDs, as shown in Figure 1.1 (with very small forward dynamic resistance), it is difficult to provide normal power to LEDs.
Cannot be powered directly by a voltage source like ordinary incandescent lamps, otherwise the voltage fluctuation will increase slightly, and the current will increase to the extent of burning out the LED. In order to stabilize the working current of LED and ensure its normal and reliable operation, various LED driving circuits with "ballast function" have emerged.
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