Triac Dimmable Led Driver Circuit

Since dimmers vary considerably it is inevitable that the performance of connected led dimming circuits also varies.

Triac dimmable led driver circuit.

An led load which is connected to an inductor or a transformer a power mos transistor a low voltage mos transistor and a current sensing resistor. A basic led driver circuit cannot be dimmed from a triac based dimmer without some additional components being added to enable stable dimmer operation and then to adjust the output current based on the dimmer phase angle. It is available with an aluminium casing. Lm3445 triac dimmable offline led driver 1 features 3 description the lm3445 is an adaptive constant off time ac dc 1 triac dim decoder circuit for led dimming buck step down constant current controller designed application voltage range 80 vac to 277 vac to be compatible with triac dimmers.

A triac dimmable light emitting diode led driver circuit is disclosed compromising. Led bulbs come with a built in smps driver within their holder cabinet and an smps circuit makes it difficult to operate or control through a triac dimmer switches until and unless its suitably modified for the application. This is a dimmable voltage led driver designed to operate with a triac dimmer switch. This type of power supply is a great choice for straightforward control of tape lights and led fixtures as well as under cabinet lights and other applications.

National s triac dimmable led driver enables a direct replacement of incandescent or halogen lamp systems that are currently interfaced to a triac dimmer without having to change the original infrastructure or sacrifi ce performance. A peak current comparator which is used to compare the.