Today, I want to introduce a new way of LED driver - DOB. DOB (Driver on Board) or Driverless, which is commonly referred to as "de" power supply, actually doesn't mean driving without power supply, but to remove the traditional AC/DC conversion and integrate the LED driver circuit and the LED lamp string circuit. It is a new driving mode which is different from the traditional switching power supply. It is a new driving mode derived from the characteristics of LED. Efficient driver IC and high voltage LED are the key elements of dob led driver. In terms of intelligent lighting, linear IC driver has its inherent advantages over traditional switching power supply driver. Traditional power supply can also realize intelligent lighting, but the cost or cost of system integration is far more than linear.