Desenvolvimento de uma Pcb led redonda projeto de eletronica

We are seeking a highly skilled Hardware and Electronics Engineer to design a custom high-density circular Metal Core pcb (mcpcb) for an advanced underwater light fixture. The project requires expertise in electrical schematic generation, circuit parameter calculation, component selection, and thermal management for high-power LED applications.

Project Scope:

1.  Electrical Schematic Generation: Develop a comprehensive electrical schematic detailing the connections for both cold white and royal blue LED channels, including current-limiting resistors and the 3-wire control interface.
2.  Circuit Parameter Calculation: Perform detailed calculations for resistor values, power dissipation, current per LED string, and overall current draw to ensure stable and safe operation under 12V DC.
3.  Component Selection: Recommend appropriate high-density Mid-Power/High-Power SMD Leds (e.g., Smd 2835 or smd 3535 for white, compatible size for royal blue), current-limiting resistors, and specify the mcpcb material.
4.  PCB Layout Design Considerations: Provide guidance on the physical layout, emphasizing the circular shape, 60mm maximum outer diameter, uniform distribution of white LEDs in the center, and precise placement of royal blue LEDs on the perimeter.
5.  Thermal Management Strategy: Detail the thermal design, leveraging the specified MCPCB with Copper Base (DTP) or high-performance Aluminum (minimum 3.0 W/m·K thermal conductivity) and 2 oz or 3 oz copper thickness.
6.  Design Rule Check (DRC): Conduct a thorough Design Rule Check, with a specific focus on track width calculations to prevent trace overheating given the high current requirements (10A-12A total).

Specific Requirements:

*  Board Geometry & Thermal Constraints:
    *  Shape: Circular PCB.
    *  Maximum Outer Diameter: 60 mm.
    *  Board Material: MCPCB with a Copper Base (Direct Thermal Path - DTP) or high-performance Aluminum (minimum thermal conductivity 3.0 W/m·K) due to extreme thermal density.
    *  Copper Thickness: 2 oz or 3 oz to handle continuous high current.
*  Electrical Configuration & Control:
    *  Operating Voltage: 12V DC.
    *  Interface: 3-wire control system for independent dimming (Common Anode V+, GND_White, and GND_Blue).
    *  Total Expected Current Draw: Between 10A and 12A.
*  Central Array (Cold White Channel):
    *  Target Power: 90W to 100W electrical.
    *  Component Type: High-density Mid-Power/High-Power SMD LEDs (Suggested: smd 2835 or smd 3535).
    *  Circuit Topology: Arrange LEDs in balanced parallel strings of 3 LEDs in series, each with a current-limiting resistor, for 12V operation. Distribute uniformly in the center to mimic a solid circular COB effect.
*  Peripheral Ring (Royal Blue Channel):
    *  Target Power: Maximum viable power fitting the perimeter of the 60mm circle.
    *  Component Type: Royal Blue SMD LEDs (~450nm-470nm), size-compatible with the white center.
    *  Layout: Position strictly on the outer edge/perimeter of the 60mm area, creating a continuous, flawless neon ring/halo visual effect.
    *  Circuit Topology: Group into parallel strings of 3 LEDs in series to match the 12V rail.

Deliverables:

*  Complete Electrical Schematic.
*  Detailed Netlist.
*  Comprehensive report on circuit parameters, component specifications, thermal analysis, and DRC results.