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Technology Development of Chip in LED Application

Date: 2018-03-23
Source: 网络
Views: 9

The drive power supply of LED lighting lamps requires very high parameters for Transformers and inductors. In order to achieve precision, it takes a lot of manpower and financial resources to achieve it. It is difficult to further reduce the cost of industrial production.
For the innovation and breakthrough of LED drive constant current source chip design technology, the new solution can be applied in the actual application of LED lamp drive power supply, the output current is less sensitive to the inductance of Transformers and inductors and the parameters such as LED VF. The key to the innovation technology is to optimize the chip algorithm language. The chip controls the peak output current, and through the auxiliary winding feedback, the ratio of the demagnetization time to the chip switch period is fixed, so that the output current is independent of the peripheral inductance bias and the output voltage bias. The deviation and inductance bias of the VF value of LEDs is the biggest problem faced by mass production.
In other words, the amount of inductance of the transformer produced in bulk and the VF of the LED will have a deviation of about 5 to 10 %. And LED lighting constant current drive power supply,

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Address: No. 2, Jianxin Road, Fuyong, Bao'an District, Shenzhen, China 
Company Name: Shenzhen Yushui Mingke Optoelectronics Co., Ltd. 
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