Outdoor lighting, especially street lights and tunnel lights, are difficult and expensive to maintain. Therefore,led driver 75w not only require high reliability and high protection level for these applications, but also need a long service life, so that the lamps can run at least 5 year. This article describes how to ensure the long life of the led driver 25w.

Choose a long-life capacitor to ensure that L0 is good enough. Ute Power uses NCC and Rubycon brands with a life span of 10,000-12,000 hours @ 105°C. The long-life, high-quality Japanese capacitors are selected, which can maintain good working performance in extremely cold environments, and maintain good working performance even at -40°C.

High efficiency and good thermal conductivity. When the temperature drops by 10°C, the lifetime of the capacitor is increased by 2 times. Reducing the power consumption of the entire LED driving power supply means less heat is generated. Assuming the same power loss, it is very important to dissipate the heat through the air or lamps. Most of the heat is conducted through the potting glue and the casing, which is why Ute 30w dimmable led driver uses high thermal conductivity glue and thick aluminum casing.

Ripple current. When people talk about lifespan, ripple current is always ignored, but it plays a key role in calculations. When we check the specifications of a capacitor, we see that the life span is 10,000 hours @ 105°C and the specified ripple current. The larger the ripple current, the more heat the capacitor itself generates. Therefore, if the ripple current is large, the internal temperature of the capacitor will be much higher than the case temperature, and the life will be reduced. Compared with competitors, Ute uses larger capacitors to achieve lower current ripple. This is why the lifespan of Utech LED drive power supply can reach 100,000 hours at 75°C.