Illumination device, LED driver circuit, bleeder control circuit and control method

A bleeder control circuit, wherein an alternating current (AC) input voltage is transmitted to a bus line after a phase-cut processing, and the bleeder control circuit comprises:

• a timing module configured to receive a bus voltage and at least one threshold voltage, and generate a first time signal characterizing the time between the moment at which a rising edge of the bus voltage reaches the threshold voltage and the moment at which a falling edge of the bus voltage reaches the threshold voltage during each power frequency half-wave cycle;
• a time processing module configured to receive the first time signal and generate a second time signal based on the first time signal in a previous power frequency half-wave cycle;
• and
• a control signal generation module configured to receive the second time signal and generate a first control signal for controlling a bleeder circuit,
• wherein the at least one threshold voltage comprises a first threshold voltage and a second threshold voltage, and the timing module generates the first time signal characterizing the time between the moment at which the rising edge of the bus voltage reaches the first threshold voltage and the moment at which the falling edge of the bus voltage reaches the second threshold voltage.