EV Charger PCB Copy — Full Board Recovery for Charging Infrastructure
An EV charger PCB copy produces a complete, manufacture-ready file set — Gerber, BOM, schematic, and netlist — from an existing charger control board. Our engineers reverse-engineer Level 2 AC chargers (3.3–22 kW) and DC fast chargers (50–350 kW), recovering high-current power-stage layouts, CAN/PLC communication traces, and safety interlock circuits. Turnaround runs 10–18 working days depending on layer count and component density, and every project is covered by a mutual NDA before the board even ships.
Why EV Charger Boards Are Harder to Copy Than Typical Power Electronics
EV charger PCBs sit at the intersection of high-voltage power conversion and sensitive digital communication. That combination creates specific reverse-engineering challenges that generic board-copy shops often underestimate.
Mixed High-Voltage and Signal Domains
A single charger mainboard may carry 400–800 V DC bus traces alongside 3.3 V CAN and SPI lines. Creepage and clearance distances (typically ≥ 6.4 mm for 800 V per IPC-2221B, reinforced insulation) must be preserved exactly in the Gerber output, or the copied board fails safety certification. Our engineers measure and document every clearance gap during cross-section analysis.
Thick-Copper and Thermal Management
Power-stage layers on DC fast chargers often use 3 oz or 4 oz copper (105–140 µm). Etching tolerances tighten significantly at these weights — trace width accuracy matters within ±2 mil to maintain current-carrying capacity. Some boards use aluminum-core substrates for heatsinking, which requires a separate lamination profile in the output stackup.
Communication Protocol Integrity
ISO 15118 (plug-and-charge) and SAE J1772 pilot signal circuits depend on controlled impedance and precise RC timing networks. A sloppy BOM substitution or trace-width deviation on the CP (Control Pilot) line shifts the ±1 V thresholds that tell the vehicle which charge rate is available. We validate these sections against the protocol spec before delivering files.
What Boards Inside an EV Charger Typically Need Copying?
| Board Function | Typical Layer Count | Key Challenge | Usual Turnaround |
|---|---|---|---|
| AC/DC Power Stage (PFC + LLC) | 4–6 layers, 2–4 oz Cu | High-voltage clearance, thermal vias | 12–18 days |
| DC/DC Converter (isolated) | 4–6 layers | Transformer footprint, gate-drive loop area | 10–15 days |
| Main Controller / HMI | 4–8 layers | CAN/Ethernet differential pairs, MCU decap if locked | 10–14 days |
| Metering / CT Board | 2–4 layers | Precision analog routing, shunt resistor placement | 7–10 days |
| Relay / Contactor Driver | 2 layers | High-current trace widths, coil suppression | 5–8 days |
Most commercial chargers (Wallbox, ABB Terra, Delta, Tritium) use a modular architecture with 3–5 separate PCBs. We can copy individual boards or the full set. A complete Level 2 charger typically involves 2–3 boards; a 150 kW DC unit may contain 5–8 distinct assemblies including power shelves.
Our EV Charger PCB Copy Process — Step by Step
- Intake and NDA. You ship the board (or boards) to our lab. We execute a mutual NDA before unpacking. High-resolution photos are taken for reference.
- Imaging and delayering. Each layer is scanned at 1200+ DPI. For 4-layer and 6-layer charger boards, we perform controlled chemical delayering to capture inner planes — especially the heavy-copper ground and power planes that carry bus voltage.
- Schematic extraction. Component-level netlist recovery, cross-referenced against the BOM. Gate-driver timing, feedback loops, and protection thresholds are annotated.
- Gerber generation. Layer-by-layer CAD rebuild in Altium or KiCad (your choice of format). Stackup parameters — dielectric thickness, copper weight, prepreg type — are documented in a fabrication note.
- Impedance and clearance audit. Differential pairs (CAN-H/CAN-L, Ethernet, PLC HomePlug) are checked against target impedance (typically 120 Ω for CAN, 100 Ω for Ethernet). High-voltage clearances are verified per IPC-2221B.
- Deliverable handoff. You receive Gerber RS-274X, ODB++, BOM (with manufacturer part numbers and suggested alternates for obsolete components), schematic PDF and source file, and a stackup specification sheet.
For projects that include locked microcontrollers (common on charger controllers using STM32F4, Infineon XMC, or TI C2000 families), we offer authorized firmware recovery as an add-on — proof of IP ownership or a maintenance authorization letter is required before we proceed.
How Is EV Charger PCB Copy Different from Inverter or UPS Board Work?
There is significant overlap. EV chargers, inverter power boards, and UPS system control boards all involve high-voltage DC bus routing, gate-driver isolation, and thermal management. The key differences for charger boards are:
- Communication stack complexity. Chargers must handle CAN, PLC (ISO 15118), and sometimes Wi-Fi/BLE/4G on the same controller board. Signal integrity requirements are stricter than a typical UPS.
- Safety interlock density. Ground-fault detection (GFCI/RCD), weld-detection on contactors, temperature monitoring on each connector pin — charger boards pack more protection circuits per square centimeter.
- Connector-specific footprints. CCS, CHAdeMO, and GB/T connector interfaces have unique pin-out and locking-mechanism footprints that must be matched exactly.
Typical Specifications We Recover
| Parameter | Common Range on Charger Boards | Our Recovery Accuracy |
|---|---|---|
| Layer count | 2–8 (power stage 4–6) | Exact match |
| Copper weight | 1–4 oz | Verified by cross-section |
| Min trace/space | 6/6 mil (controller), 15/15 mil (power) | ±1 mil |
| Board thickness | 1.6–2.4 mm | ±0.05 mm |
| Impedance targets | 50 Ω single-ended, 90–120 Ω differential | ±5 Ω (validated in stackup calculator) |
| Via types | Through-hole, thermal relief, occasional blind vias | All types captured |
| Surface finish | HASL, ENIG, OSP | Identified and specified |
Boards with blind and buried vias — increasingly common on compact DC fast-charger modules — require additional micro-sectioning steps, which adds 2–3 days to turnaround.
Who Needs EV Charger PCB Copy Services?
Charging station operators maintaining fleets of 50+ units where the OEM has discontinued a board revision or gone out of business. Contract manufacturers tasked with producing a second-source board for a charger design they hold rights to. Engineering teams benchmarking a competitor’s thermal layout or protection scheme for their own original design (clean-room analysis under NDA). Repair depots that need bare-board replacements when the original fabricator no longer stocks the part number.
Limitations and What We Won’t Do
- We do not copy boards for the purpose of counterfeiting another company’s product. Every EV charger PCB copy project requires a signed statement of authorized use.
- Firmware extraction from locked MCUs is only performed with proof of ownership or written authorization from the IP holder.
- Boards with potting compound over critical sections add 3–5 days and $200–$400 for chemical removal; some epoxy-potted modules risk component damage during depotting — we flag this in the feasibility review.
- Certification marks (UL, CE, TÜV) on the original board do not transfer to the copied board. You are responsible for recertification of manufactured copies.
Pricing Signals
A straightforward 2-layer relay driver board from a Level 2 charger starts around $600–$900 for the full file set. A 6-layer power-stage board with 3 oz copper and impedance-controlled CAN pairs typically falls in the $1,800–$3,200 range. Multi-board charger sets (3+ boards) receive volume pricing. Exact quotes depend on component count, layer count, and whether firmware recovery is needed — submit the board for a free feasibility assessment.
Check feasibility for your project
Send the chip marking or board details and tell us what you need to recover. Add clear photos if available.
Request a feasibility reviewFrequently Asked Questions
Can you copy an EV charger board if I only have one sample?
Yes. A single working sample is our standard intake. We perform non-destructive scanning first, and only delayer if inner-layer imaging is required. The original board is returned with the deliverable package unless you authorize destructive cross-sectioning for thick-copper verification.
Do you handle both AC Level 2 and DC fast-charger boards?
We handle both. AC Level 2 boards are typically simpler (2–4 layers, lower voltage), while DC fast-charger boards involve 4–8 layers, 400–800 V bus routing, and more complex communication stacks. Our full PCB reverse engineering service covers the entire range.
What if the charger uses an FPGA or locked microcontroller?
We can recover the board layout regardless of IC lock status. Firmware or bitstream extraction is a separate service requiring proof of IP ownership. For common charger MCUs (STM32, XMC4000, TMS320), success rates on authorized recovery are high but not guaranteed — we provide a feasibility assessment before you commit.
How do you handle impedance-controlled differential pairs on charger boards?
We measure the original stackup via cross-section, calculate target impedance using the recovered dielectric constants and copper weights, and specify the stackup in the fabrication notes. Our engineers verify the output against impedance-controlled copy requirements before delivery, targeting ±5 Ω of the original design intent.
Can you also copy the HMI touchscreen board from the charger?
Yes. HMI and display-driver boards are typically 4-layer with fine-pitch FPC connectors. These are straightforward to reverse-engineer. If the display controller firmware is locked, the same ownership-authorization process applies.
Related Equipment Board Copy Services
- Welding machine PCB copy — similar high-current power-stage challenges
- Laser equipment board cloning — precision analog and high-voltage driver recovery
Working on a board like this?
Send the chip marking or two photos. You get feasibility, lead time and price within 24 hours, and the check costs nothing.
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