Analysis Of LED Drive Power
Posted by sere on December 25th, 2020
In order to save energy and power, LEDs have been widely promoted, but LEDs need to have a power drive, which will directly affect the life of the LED, so how to make a LED drive power9901 is the top priority of the LED power designer weight.
What we call LED driver includes digital driver and analog driver. Digital driver refers to digital circuit driver, including digital dimming control, RGB full-color change, etc. Analog drive refers to analog circuit drive, including AC constant current switching power supply, DC constant current control circuit.
LED drive power 9901 circuit is composed of electronic components, including semiconductor components, resistors, ED is a cold light source, the operating junction temperature cannot exceed the limit, and a certain margin should be left in the design. The design of the entire luminaire should consider many aspects such as beautiful appearance, convenient installation, light distribution, heat dissipation, etc., and seek a balance among many factors, so that the overall luminaire is the best. The development time of LED lamps is not long, there is not much experience to learn from, and many designs are constantly improved.
Some LED driving power supplies 9901 use power supplies that are outsourced or purchased. The lighting designer does not know much about the power supply. The space for heat dissipation for LEDs is relatively large, and the space for heat dissipation for power supplies is small. Generally, after the lamps are designed, a suitable power supply is found, which brings certain difficulties to the matching of the power supply. It is often encountered because the internal space of the lamp is small or the internal temperature is high, and the cost control is low, it can not be equipped with a suitable power supply.
Some LED drive power supplies 9901 have power supply research and development capabilities. The above problems can be solved by conducting evaluations at the beginning of the design of the lamps and the power supply design is carried out simultaneously. In the design, it is necessary to comprehensively consider the heat dissipation of the LED and the power supply, and control the temperature rise of the lamp as a whole, so that a better lamp can be designed.
The choice of purchased power supply mainly depends on the voltage range of constant current and constant current. The constant current value is chosen to be lower than the standard current of the LED. The selection of the voltage range should be moderate, try not to choose a larger range to avoid waste of power.
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About the Authorsere
Joined: June 6th, 2019
Articles Posted: 740
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