STMicroelectronics launches 150W evaluation board and reference design to promote the development of LED street lamp applications

China, May 29, 2020-ST's new EVL150W-HVSL LED driver evaluation board and reference design will ensure excellent performance of LED lamps, save bill of materials (BOM) costs, and speed up LED street lamps and other medium and high power Research and development of lighting applications.

As a 150W, 1A mains input driver, EVL150W-HVSL can achieve up to 91% full-load energy efficiency, which can save the electricity cost of street lamp operation enterprises to the greatest extent.

Electromagnetic interference (EMI) is within the scope of EN55022 electromagnetic compatibility standard, and the total harmonic distortion (THD) of the input current is less than 10% in the 230V AC, 30% to 100% load range, in line with European EN61000-3-2 Class-C And Japan JEITA-MITI Class-C lighting equipment specifications.

The EVL150W-HVSL evaluation board is equipped with a 90V-264V AC universal input, conforms to the IEC 60950-1 and 62368-1 safety standards, supports three dimming modes: analog, resistance and PWM (pulse width modulation), no flicker at any switching frequency The PWM dimming depth is 1%.

In addition, the evaluation board also contains ST's STCMB1 highly integrated power factor correction (PFC) controller and a high-voltage resonant half-bridge controller with LCC topology. The constant current output is independent of the output voltage, so it is very suitable for driving LED lamps. The unique technical functions of this product 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, which reduces the light-load input power consumption to less than 0.5W. The compact 20-pin STCMB1 also integrates an 800V start circuit and an X capacitor discharge and power sequencing circuit without any auxiliary power supply.

LED lamps also benefit from EVL150W-HVSL's comprehensive 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 lighting applications.

EVL150W-HVSL is currently in mass production, and both STMicroelectronics and its authorized agents are already on sale.