Part Number: LM3447 Tool/software: Hi..
One of my customer want to develop 56 Watt LED driver with LM3447 as they are looking for the singe stage PFC LED driver.
They have checked available excel sheet & as per them there is some restriction with…
Part Number: LM3447-PAR-230VEVM Other Parts Discussed in Thread: LM3447-A19-230VEVM Hi,
As per LM3447-PAR-230VEVM Schematic, rectified AC is connected to transformer pin no.1 and is connected to signal ground...
is it correct?? or transformer pin…
Part Number: LM3447 Hello, We're going to design a dimmable led driver. This circuit needs to be isolated(flyback topology) and operates at 30 to 50 watts. The LED chipset is COB 50W(28v-32v and max current 1500ma) but we can change the chipset to other…
Part Number: LM3447 Other Parts Discussed in Thread: TPS922051 Tool/software: We have a project requirement of Double horn flood light camera with PIR sensor. Image of project is attached. In this project we have two horns containing array of white LEDs…
Part Number: LM3447 Hi,
As per LM3447-PAR-230VEVM Schematic, rectified AC is connected to transformer pin no.1 and is connected to signal ground...
is it correct?? or transformer pin no 14 should be connected to auxiliary winding pin no. 4 through…
Part Number: LM3447 Hi Power management team,
I am Eric, FAE based in Vietnam. One of my customer are working on "LED Lighting Dimming" project.
They use our LM3447 as a controller for LED lighting in their design. The Pout (LED Driver Output Power…
Part Number: LM3447-A19-120VEVM Other Parts Discussed in Thread: LM3447 Hello,
I am testing the LM3447-A19-120VEVM evaluation board to check the performance with different triacs. The IC works well but has a one major issue which I am trying to resolve…
Hello Alexey,
This can also be caused by many things. It is likely that the triac dimmer is misfiring making the angle detect small. I would look at the rectified AC and input current before it goes out and after it goes out and see what is different…
