How to choose led driver of filament lamp?


LED is a highly efficient light-emitting diode device, it must operate at DC current environment to emit a steady bright light, illuminating the world. The driving power of the pros and cons will directly affect the quality of its light emission brightness and light. How to choose a good LED filament drive power is the key to cost-effective quality manufacturing LED filament lamp.

 

Currently using filament lamps LED drive power in three ways:
One is about to be eliminated RC Buck Power;
Second, the current mainstream non-isolated constant current drive power switch;
Third, the new high-voltage constant-current drive power.
LED lamp filament current mainstream products are candle lamp C35 and A60 of the bulb, they can install the drive power of space is very small.

Early LED filament lamp development, only between the glass bulb with a circular plastic cap increase to expand the space to accommodate the power supply module; with the new generation of LED lights for filament drive power chips come out, many LED driver protection function Power Required are concentrated into the interior of the chip, they are more simple application circuit, the application circuit surrounding parts more scarce, production costs decline further.
Today, a new generation of smaller footprint drive power chips and programs can meet the filament lamp no plastic parts requirements.

Currently, the grid voltage varies around the world, many countries have two different grid voltage at the same time and use, such as the United States, Canada, Mexico, Japan, Brazil, Vietnam, the grid voltage from AC100V-240V, larger span, This requires that the power can be applied to the filament lamp AC100V-240V input voltage.
The filament lamp operating voltage, current basic requirement is DC150V / 10-30mA, and therefore a different input voltage range is designed to boost the power supply (input AC90-130V), Buck (input AC180-265V), automatic lifting pressure (input AC90-265V) three different modes to accommodate different grid voltage.

Filament lamp mainstream product-driven power conventional parameters:
1 candle lamp power: 2W, 3W, 4W; output voltage DC150V, output current is 10-12mA, 14-15mA, 20-22mA;
2, bulb Power: 2W, 4W, 6W, 8W; output voltage DC150V, output current is 10-12mA, 22-24mA, 33-36mA, 44-48mA.