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LED technology in the application of chip development

Date: 2013-12-11
Views: 28

LED lighting power supply to the transformer, inductor parameters of the request is very high, for precision to spend a lot of manpower and financial resources to achieve, industrial production costs are difficult to further decline.

      LED drive constant current source chip design technology innovation and breakthroughs, the new solution can be used in LED lighting power supply practical application, the output current transformer and inductance inductance and LED VF and other parameters are not sensitive. The key to innovative technology is to optimize the chip algorithm language. The chip controls the output current peak and feeds the auxiliary winding feedback so that the demagnetization time and the chip switching period are fixed so that the output current is independent of the deviation of the output inductance and the deviation of the output voltage, and the deviation of the VF of the LED The inductance deviation is the biggest problem facing mass production.

      For example, mass production of transformer inductance and LED VF will have about 5 to 10% deviation. The LED lighting constant current drive power, batch accuracy of up to 3% or less, you can allow the transformer and inductance parameters have a greater tolerance, which reduces the scale of industrial production costs and promote the continuous production of continuous production line


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