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Points to note when selecting and designing LED drive power-1

Views: 0     Author: Site Editor     Publish Time: 2021-05-20      Origin: Site

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Points to note when selecting and designing LED drive power-1

1. High reliability: It is especially like the driving power supply of LED street lights, which is difficult to maintain and costly when installed at high altitude.

2. High efficiency: LED luminous efficiency decreases with increasing temperature, so heat dissipation is very important. Especially the power supply is installed in the lamp

LED is an energy-saving product with high drive power efficiency, low power consumption, and low heat generation in the lamp, which is beneficial to reduce the temperature rise of the lamp. Delay LED light decay.

3. High power factor: Power factor is the requirement of the power grid on the load. Generally, there are no mandatory indicators for electrical appliances below 70 watts. Although the power factor of a single electrical appliance with low power is low, it has little effect on the power grid, but if everyone lights up at night, the similar loads are too concentrated, which will cause serious pollution to the grid. For LED driving power supplies of 30 watts to 40 watts, it is said that in the near future, there may be certain index requirements for power factor.

4. Constant current output power supply mode;

1) Multi-channel constant current output, flexible combination, one LED failure, does not affect the work of other LEDs, and the cost is slightly higher.

2) Direct constant current power supply, LED series or parallel operation. The cost is a little bit lower, but the flexibility is poor. One LED fails and affects the operation of other LEDs.

These two forms coexist for a period of time. Multi-channel constant current output power supply mode will be better in terms of cost and performance. Maybe it will be the mainstream direction in the future.


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