Game consoles are equipped with high-performance GPUs, CPUs and storage modules, with instantaneous peak power far exceeding ordinary consumer electronic equipment, making high-current power supply design the core difficulty of game console PCB development. The operating current of key power circuits of mainstream game consoles can reach tens of amperes, which puts forward ultra-high requirements for PCB copper foil thickness, circuit width and power loss control. Unreasonable high-current design will lead to severe voltage drop, circuit heating, power supply instability, and even crash or automatic shutdown during high-load game operation.

Copper foil selection and trace layout are the primary design challenges. Ordinary PCB copper foil (1oz) cannot meet the high-current transmission demand of game consoles, so 2oz–4oz thick copper foil is widely used for power supply layers. Designers need to accurately calculate the trace width according to the current magnitude, and avoid narrow and long power traces to reduce line resistance. At the same time, high-current power supply traces need to avoid sharp right-angle turns, which will cause current accumulation and local overheating. For multi-channel high-current power supply circuits, independent power supply layers are required to avoid current superposition and mutual interference between different power domains.

Voltage drop compensation and thermal design are key links to ensure power supply stability. During the full-load operation of game console chips, instantaneous current surge will produce obvious voltage drop on the power supply lines. The PCB design needs to optimize the power supply path, shorten the distance from the power management chip to the load chip, and configure high-capacity filter capacitors at the power supply terminal to suppress voltage fluctuation. In terms of heat dissipation, high-current traces will generate continuous heat, so the PCB needs to design large-area copper pouring and heat dissipation vias for the power supply area, export heat to the ground layer and shell, and avoid local high temperature burning the board or aging components.

In addition, high-current insulation and safety design cannot be ignored. The high-power circuit area of game console PCB needs to increase the creepage distance between lines to prevent high current from causing breakdown and short circuit. Meanwhile, the design needs to match over-current protection devices, and cooperate with PCB layout to realize safe current limiting and power-off protection, ensuring the stable and safe operation of the game console under long-term high-load working conditions.