Firstly, let’s think what the LED driver power supply is. The LED driver power supply can be converted into specific voltage and current, which drives LED glowing. Input LED driving power supply usually includes alternating current, low voltage direct current, high voltage direct current, etc. However, Output LED driving power supply can change the voltage of constant current supply with the change of LED forward voltage drop.
The core components of LED power supply includes on-off controller, inductor, MOSfet, feedback resistor, input filter, output filter and so on.
Dividing LED driving power supply according to the driving mode
Firstly, Constant Current
Output current of driving circuits is current, but the DC voltage changes with load value resistance in different time. The load value resistance is lower, the output voltage is also lower, and vise versa.
Secondly, Voltage Stabilization
If the parameters of voltage stabilization are confirmed, the output DC voltage is also constant. However, the output current changes with the electronic load increasing or decreasing.
Dividing LED driving power supply according to the features
Firstly, High Reliability
LED driving power supply installs at high altitude, which is not convenient to repair and the cost is too high.
Secondly, High Efficiency
LED is the energy saving products. The efficiency of driving power supply is high. It is very important for power supply to install in lamps. The efficiency of power supply is higher, the consuming power is lower, the heat value is lower and meanwhile the temperature of lighting is lower.
Thirdly, High Power
Although the low single electronic application affects power system a little, we are using the lighting more in the evening, which results in the serious pollution of power system.
Fourthly, Surge Protection
The ability of LED surge protection is low, especially the ability of resisting backward voltage. It is important to enhance the protection. A lot of LED lighting is installed out of doors, and the power system sometimes meets all kinds of surge which leads to the breakdown of LED.
Fifthly, Protect Function
We should increase the negative feedback of LED temperature for output constant current, which avoids high temperature of LED.