ICS TRIPLEX T8850

ICS TRIPLEX T8850

ICS TRIPLEX T8850

Driving LEDs faces many challenges, such as the forward voltage changing with temperature and current, and the forward voltage of LEDs varies among different individuals, batches, and suppliers; In addition, the “color dots” of LEDs will also drift with changes in current and temperature.
In addition, multiple LEDs are often used in applications, which involves the arrangement of multiple LEDs. Among various arrangement methods, driving a single string LED in series provides excellent current matching performance regardless of how the forward voltage changes and the output voltage (Vout) “drifts”. Of course, users can also use other arrangement methods such as parallel, series parallel combination, and cross connection for applications that require “matching” LED forward voltage and gain other advantages. In a cross connection, if one of the LEDs is open due to a fault, the driving current of only one LED in the circuit will double, thereby minimizing the impact on the entire circuit as much as possible.
The arrangement of LEDs and the specifications of LED light sources determine the basic driver requirements. The main function of an LED driver is to limit the current flowing through the LED within a certain range of operating conditions, regardless of the changes in input and output voltages. The basic working circuit diagram of the LED driver is shown in Figure 2, where the so-called “isolation” indicates that there is no physical electrical connection between the AC line voltage and the LED (i.e. input and output). The most commonly used method is to use transformers for electrical isolation, while “non isolation” does not use high-frequency transformers for electrical isolation.

MHD041B-144-PP1-UN
MHD041B-144-NP0-UN
MHD041B-144-NP1-UN
MHD071B-035-NG1-UN
MHD071B-061-NP0-UN
MHD071B-035-PG1-UN
MHD071B-035-PG0-UN
MHD071B-061-PG0-UN
MHD071B-061-PG1-UN
MHD071B-061-NG0-UN
MHD071B-061-NG1-UN
MHD071B-035-NG0-UN