Led short detection circuit and led system including the same

A light-emitting diode (LED) system comprising:

• an LED string configured to comprise a plurality of LEDs;
• an LED driving circuit configured to supply a first LED driving voltage to a first end of the LED string and a second LED driving voltage to a second end of the LED string;
• and
• an LED short detection circuit configured to receive the first LED driving voltage and the second LED driving voltage, and generate a short-circuit signal indicating whether a short-circuit has occurred in the LED string,
• wherein the LED short detection circuit comprises:
• a first smoothing circuit configured to perform smoothing on the first LED driving voltage to output a first smoothing voltage;
• a second smoothing circuit configured to perform smoothing on the second LED driving voltage to output a second smoothing voltage;
• an amplifier configured to amplify a difference between the first smoothing voltage and the second smoothing voltage to output a detection voltage;
• and
• a short-circuit determination circuit configured to compare the detection voltage with a predetermined reference voltage to output a short-circuit signal.