Enhance thermal management performance
The thick-type driver board uses a PCB substrate of 1.6mm or thicker, significantly enhancing the thermal management efficiency through material engineering. An increase of 20% to 50% in the substrate thickness leads to an increase of over 30% in thermal capacity, combined with a thermal conductivity of 1.5W/mK, forming a multi-dimensional heat dissipation path, effectively eliminating local hotspots. This design stabilizes the operating temperature of power components (including MOSFETs, rectifiers, and control ICs) at below the critical value of 70°C, ensuring that the lifespan of 105°C rated electrolytic capacitors reaches 50,000 hours, fully meeting the strict requirements of the LM-80 standard for luminous maintenance rate.
Support for high-specification component integration
The thickened substrate layer provides sufficient space for the integration of high-specification components. This design is compatible with industrial-grade 105°C electrolytic capacitors, with their capacity deviation strictly controlled within ±10%; it supports the application of TO-220 packaged MOSFETs, reducing the conduction resistance by 40%; combined with a 2oz copper foil thickness and a trace width of over 2mm, it effectively reduces impedance loss. Through actual testing, this configuration has enabled the driving system to achieve an average downtime of over 80,000 hours, and the surge immunity has reached the 6kV protection level required by IEC 61000-4-5 Level 4 standard.
Mechanical structure reliability
The thick substrate design meets the mechanical stability requirements under harsh environments. Its bending strength exceeds 400 MPa, meeting the IPC-6012 Class 3 industrial standard; it successfully passed the IEC 60068-2-6 vibration test (10-500Hz/1.5mm amplitude for 72 hours) and the ISTA-3A standard 100G/6ms impact test. Engineering verification indicates that this structure reduces the failure probability of solder joints under temperature cycling conditions of -30°C to +70°C by 75%.
Electrical Safety and EMC Compliance
An interlayer insulation thickness exceeding 0.4mm provides a dielectric strength of over 3kV, meeting the UL 8750 safety standard. By optimizing the layout design of the components, the electromagnetic interference radiation is reduced by 15dBμV/m, and the conducted interference is stably controlled within the 30dBμV limit specified in EN 55015 Class B. This technical solution simultaneously complies with the mandatory certification requirements of major global markets such as FCC Part 18 and CE EMC.
About our company
Shenzhen Benwei Lighting Technology Co., Ltd is a well-known company that designs, develops, makes, and sells high-tech goods, including LED lighting products. The plant where we work opened in 2010 and is in Shenzhen.
Our address
3rd Floor, 5th Building, Hebei Industrial Park, Hualian Community, Longhua District, Shenzhen, China
