The circuit I have attached is basically LED arrays with some transistor and N channel Field-Effect Transistor. It requires 17v, 400mA to work. I will only glow either white led or RGB. They won't glow at same time, due to less current. . The N channel Field-Effect Transistor (XORB48) has
- IDS: 5.8A
- VGS: ±12V
- VDS: 30V
- CISS: 623
- VGS(th) = 1.05V
It has low gate charger and operation gate voltages as low as 2.5V.
Each white led is of 0.2W (2835) and RGB is of 1W (5050) each.
I will control and dim the LEDs using Arduino PWM, for that individual GPIOs are connected, mentioned in circuit.
I want to know what kind of supply is needed for this? Constant current? Constant voltage? Does it require High power factor? How about ST's Viper22a or power integration's LNK IC?