22-layer Heavy Copper PCB for High-power DC

KnownPCB delivered a project of 22-layer heavy copper PCB for high-power DC power supply, which is the ultimate answer to complex thermal challenges. By utilizing massive 4oz inner copper weights, heavy copper layers act as integrated heat sinks to boost power efficiency.

Thanks for our superior lamination reliability.

Learn about KnownPCB Heavy Copper PCB Solution

The design figures about the heavy copper PCB:

Core Specs of the heavy copper PCB: 22 Layers | 4oz Inner Copper | 2oz Outer

Precision Engineering: 7.87mil/7.87mil minimum trace/space

type of PCB	Heavy Copper PCB with 22 layers 2 pressed and buried blind holes
PCB Dimension	36.8mm*58.4mm
PCB Surface treatment	ENIG (immersion gold)
Thickness of the PCB	5.2±0.4mm
Applications	High-power DC power module

How Heavy Copper PCB Design Improves Electrical Performance in High-Power DC Applications

High-Quality Materials for High-Current Heavy Copper PCBs

High current is a big deal.

Without sufficient copper weight, PCB turns into an "electric blanket" in minutes.

How to make a decision on the materials?

Using Taiyao Tu865 plate, the heavy copper foil design can withstand the high voltage and high current loads of high-power DC power supplies, providing a low-resistance current channel, reducing power loss and heat generation, and maintaining good stability and reliability.

Performance Benchmark: At 20A, KnownPCB’s 3oz copper maintains a modest 58°C rise, whereas standard 1oz copper spikes to 105°C, risking component damage. Don't settle for "good enough." Choose the board designed for uninterrupted 24-hour performance.