LED Driver ICs Forum Discussions
ICL8820 is there an application note for constant current control of led drivers ? is this i.c. the best choice for a 50 w cc led driver.Show Less
I am considering providing backup power to the Vcc pin of the ILD8150XUMA1. Under normal circumstances, we plan to supply approximately 60V to the Vin pin. However, there are potential fault conditions where the voltage may drop to as low as 1V. In such situations, we want the internal logic of the chip to continue functioning normally. My question is: Will supplying a backup voltage of around 6.8V to the Vcc pin in the absence of Vin cause any issues or complications?
I understand VCC provides the output voltage from internal regulator but still can this be use to provide 6.8V externally.
We are designing an SSR CV converter with ICL8810 24V 3A. The reference schematic shows the startup circuit consisting of 30K x 3 resistors with a depletion mode MOS controlled by the TD pin via NPN transistor 2N3904. Would like to understand whether is it possible to have only resistor based startup and avoid the MOS + NPN transistor and other components to keep the circuit simple. What are the tradeoffs of having a only resistor based startup circuit vs MOS + NPN transistor based circuit?Show Less
I'm not sure I'm in the right forum here.
I am looking for a step up flyback controller with an input voltage of 12 - 30V DC and with an enable so I can use a microcontroller to toggle it on/off. I looked at the XDPL8210 which looked perfect except for the supply requirements. Is there another controller you can recommend?Show Less
I learned that XDPL8221 can achieve 120-277V input, 0-10V dimming, and CC or CV output. These functions are what I need.
I also need it to support TRIAC dimmer, can it support TRIAC dimming?
Or is there any other recommended IC that can achieve the above function?
For a project involving the stimulation of live-cells we are in need of a LED driver with a very low output current ripple.
Other parameters such as power loss are not as important
Furthermore the IC schould support:
- Vin max >30V
- Iout max >1A (in total. the number of channels doesnt matter although less channels is preferred)
Thank you all for you support.
All the best!
I am currently in search for a LED driver for one of our products.
Since the LEDs are used for stimulation of cells, it is crucial that the output current of the driver is a real adjustable constant current and not just a high frequency PWM signal even if the “flickering” is undetectable for the human eye.
Does Infineon offer products that provide a dimmable constant current output (some noise is of course tolerated)?