Application of linear scheme in the direction of bulb, filament lamp, thyristor dimming, etc.

2016 is destined to be a year of linear programming.

The linear scheme refers to the use of a linear regulator to achieve control of the LED current. The linear regulator, as its name suggests, is based on the use of a balanced section of the switching tube to balance the input voltage to effect the constant current regulator controller (conventional switching control is the switching control state), somewhat similar to LDO.

LED linear drive technology is a new generation of power technology, no high-frequency switching action, so there is no hidden worry of EMC; can also save the magnetic components such as transformers, some applications can also save electrolytic capacitors, achieve high PF, low THD. Considering power consumption, the main difficulty of IC now is how to achieve a wider input voltage and achieve high efficiency.

This is the case. In areas where the grid is relatively stable, single-stage control has its advantages of low cost and high performance, and it has gained a large application. Applications include flat bulbs, filament lamps, thyristor dimming, etc.