China, May 29, 2020--ENELTEC’s new ENSL LED driver evaluation board and reference design will ensure that LED luminaires have excellent performance, save the bill of materials (BOM) costs, and accelerate the development of LED street lamps and other mid-to-high-power lighting applications.
As a 150W, 1A mains input driver, ENSL can achieve up to 91% full load energy efficiency, which can maximize the cost of electricity for street lamp operating companies.
Electromagnetic interference (EMI) is within the scope of the EN55022 electromagnetic compatibility standard, within 230V AC, 30% to 100% load range, the input current total harmonic distortion (THD) is less than 10%, in line with European EN61000-3-2 Class-C And Japan JEITA-MITI Class-C lighting equipment specifications.
The ENSL evaluation board is equipped with 90V-264V AC universal input, which complies with IEC 60950-1 and 62368-1 safety standards. It supports three dimming modes of analog, resistance and PWM (pulse width modulation). At any switching frequency, flicker-free PWM adjustment The light depth is 1%.
In addition, the evaluation board also includes ENLTELC's STCMB1 highly integrated power factor correction (PFC) controller and high-voltage resonant half-bridge controller using LCC topology. The constant current output is independent of the output voltage, so it is very suitable for driving LED lamps. The product's unique technical features include constant on-time PFC control, resonant half-bridge time shift control, and hard-switching prevention, which can save external component costs and ensure excellent dynamic performance and ripple suppression. In burst mode, PFC and half-bridge drive are synchronized, so that the light load input power consumption is reduced to less than 0.5W. The compact 20-pin STCMB1 also integrates an 800V start-up circuit and an X capacitor discharge and power sequencing circuit without any auxiliary power supply.
LED lamps also benefit from ENSL's full range of electrical protection functions, including output overload, output short circuit and open-loop protection. Each protection mechanism has an automatic restart function to meet the requirements of street light applications.
