Characteristics of led lighting panel power supply

  LED panel light because of its energy-saving, environmental protection, adjustable light, low energy consumption, long service life and is loved by people, but in the LED panel lights, there is an easily overlooked important constituent, is the power of LED panel lamp.
  LED panel light's power plays an important role in the work of the LED, it can regulate the stability of current, filtering interference protection circuit security, greatly affects the LED panel lamp performance and life.
  In the current market, the characteristics of high-quality led lighting panel power supply:
  1. The new modular power supply IC
  Boost DC / DC converter is a high efficiency, but the ripple and noise voltage is large, low-dropout linear regulator low efficiency but noise is minimal, consisting of a combination of the two dual output power supply IC can solve the efficiency and noise issue.
  2. High output voltage accuracy
  Output voltage accuracy is ± 2 ~ 4%, there are a lot of new power IC accuracy is ± 0.5 and ± 1%; and the output voltage temperature coefficient is small, typically ± 0.3 ~ ± 0.5mV / ℃, and some can reach ± 0.1mV/ ℃ level. Linear adjustment rate is generally 0.05% ~ 0.1%/V, some up to 0.01%/V; load adjustment rate is generally 0.3 ~ 0.5%/mA, some up to 0.01%/mA.
  3. Low operating voltage
  The LED panel light power supply voltage general is 3 ~ 3.6V. There are some lower working voltage, such as 2, 2.5, 2.7V; there are also some working voltage is 5V, and special use a 12V or 28V voltage source.
  4. Perfect protection measures
  Power IC has perfect protection measures, which include: output over-current limit, thermal protection, short circuit protection and reverse polarity battery protection, the power supply to the safe and reliable work, not easy to damage.
  5. Small package size
  In recent years, LED panel lights are used SMD devices, power IC is no exception, there are SO packages, SOT-23 package, μMAX package and the smallest package size SC-70 and the latest SMD package。The power accounted for less and less space.
  6. Low operating current
  As the current most LED panel lamp is less than 300mA, so the 30 ~ 300mA power in species and quantity accounted for the larger proportion.

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