DC-DC LED ADAPTIVE DIRECT CURRENT DC TO DC DC-TO-DC LIGHT EMITTING DIODE LED DRIVER FOR DYNAMIC LOADS

摘要

Current spikes can occur when the light emitting diode is shortened dynamically. This current spike can be avoided by using a voltage control loop to adjust the output of the LED driver just before the transition period. In particular, the adjustment of the LED driver is from a current control loop (eg, a control loop that regulates the output current of the LED driver) to a voltage control loop (eg, a control loop that regulates the output voltage of the LED driver) just before the LED chain is shortened. Switching. Next, the voltage control loop reduces the voltage of the LED driver to the target voltage before shortening the LED chain, whereby the LED chain can be shortened without causing current spikes.