Abstract: An LED charge pump driving circuit includes a charge pump, a control circuit, a driver, and an LED. The charge pump generates an output voltage according to an input voltage. The driver drives the LED according to the output voltage so as to generate a load voltage. When the load voltage is greater than a first predetermined voltage, the charge pump is turned on. When the load voltage is smaller than a second predetermined voltage over a predetermined duration, the charge pump is turned off. When the load voltage is greater than a third predetermined voltage, the driver is locked.

Abstract: An LED apparatus comprises a PCB and a plurality of LEDs packaged on the PCB. The PCB materials on the area between the plurality of LEDs are partially removed to form a plurality of gaps, wherein the gaps are immediately close to the LEDs and directly dissipate heat of the LEDs.

Abstract: A lighting system having control architecture is disclosed for avoiding redundant lighting. The lighting system includes a switch, a pulse filter, a driving circuit, a lighting module, a light feedback module, a compensator, and a pulse width modulation (PWM) signal generator. The switch controls the transmission of a PWM signal to the driving circuit based on an enable control signal. The driving circuit generates a driving voltage for driving the lighting module to emit a light output based on the PWM signal. The light feedback module detects the light output for generating a feedback signal. The compensator provides a compensation signal to the PWM signal generator for generating the PWM signal based on the feedback signal and a reference signal. When the switch is turned off by the enable control signal, the pulse filter is utilized for filtering out periodical pulses caused by the equivalent capacitor of the switch.