Motor Drive PCB Copy: Recover Full Manufacturing Data from Any Drive Board
Motor drive PCB copy is the process of reverse-engineering an existing motor drive board—variable-frequency drives (VFDs), servo controllers, soft starters, or brushless DC motor drivers—into a complete set of manufacturing files: Gerber data, bill of materials, and schematic. Our engineers handle the thick-copper bus planes, high-voltage creepage requirements, and IGBT gate-driver timing-critical traces that make these boards uniquely difficult to clone. Typical turnaround is 5–8 working days for boards up to 6 layers, with every project covered by a mutual NDA.
Why Motor Drive Boards Are Harder to Copy Than Standard PCBs
Motor drive circuits combine high-current power stages (often 2 oz or 3 oz copper, sometimes up to 6 oz on bus bars) with sensitive analog feedback loops and fast-switching digital gate-driver sections—all on a single board. That mix creates challenges generic PCB copy shops routinely get wrong.
High-Current Power Planes
A 30 kW VFD may carry 60 A+ through internal copper pours only 15–25 mm wide. Trace width and copper weight must be captured exactly; a 10% undersize on a bus bar trace can raise resistance enough to overheat the board at full load. We measure copper weight destructively on a sacrificial coupon when markings are absent, and we verify thermal relief spoke widths down to 0.2 mm.
Creepage and Clearance
Drive boards rated 480 VAC or above require creepage distances of 6.3 mm+ between primary and secondary sides (per IPC-2221B / IEC 60664-1 at pollution degree 2). During motor drive PCB copy, we map every slot, routing channel, and board cutout that enforces these distances, and flag any area where the original design appears marginal.
Gate-Driver Signal Integrity
IGBT and SiC MOSFET gate-driver loops are sensitive to parasitic inductance. Trace lengths between the driver IC and the gate resistor typically need to stay under 15 mm, with return paths directly beneath. We capture these paired traces as impedance-controlled differential or co-planar structures, not just geometric copies.
Thermal Management Features
Many drive boards use thermal vias under power devices (0.3 mm drill, 1.0 mm pitch arrays), direct-bond copper (DBC) substrates, or metal-core layers. We document via arrays, solder-mask openings for heatsink pads, and any non-standard stackup materials so the reproduced board dissipates heat identically.
What You Receive: Motor Drive PCB Copy Deliverables
| Deliverable | Format | Details |
|---|---|---|
| Gerber / ODB++ files | RS-274X / ODB++ | All copper layers, solder mask, silkscreen, paste, drill, board outline, internal planes |
| Bill of Materials | Excel / CSV | Part values, packages, manufacturer P/N cross-references, sourcing notes for obsolete parts |
| Schematic | PDF + native (Altium / KiCad on request) | Hierarchical sheets: power stage, gate drive, control, feedback, aux supply |
| Stackup Report | Layer order, copper weights, dielectric thickness (measured via cross-section), impedance notes | |
| Assembly Drawing | Component placement, polarity marks, special process notes (selective soldering, press-fit pins) |
Common Motor Drive Board Types We Copy
The table below shows typical parameters across the most frequent motor drive categories we process. These ranges reflect real project data, not theoretical maximums.
| Drive Type | Typical Layer Count | Copper Weight | Voltage Class | Key Challenge |
|---|---|---|---|---|
| AC VFD (≤ 22 kW) | 2–4 | 2–3 oz | 230–480 VAC | Mixed-signal layout, bus capacitor footprints |
| AC VFD (30–250 kW) | 4–6 | 3–6 oz | 480–690 VAC | Heavy copper planes, creepage slots, press-fit connectors |
| Servo Drive | 4–8 | 2–3 oz | 230–400 VDC | Encoder interface, high-speed SPI/EtherCAT, EMI shielding |
| BLDC Controller | 2–4 | 1–2 oz | 12–96 VDC | Compact layout, Hall-sensor routing, current-sense shunt placement |
| Soft Starter | 2 | 3–4 oz | 230–690 VAC | SCR/thyristor gate loops, bypass contactor relay footprint |
Our Motor Drive PCB Copy Process
Step 1 — Intake and Feasibility Check
You ship one working or non-working board. We photograph both sides at 2400 DPI, X-ray for internal layers and via structures, and confirm layer count within 24 hours. If the board is potted or conformally coated, we assess chemical or mechanical removal feasibility before proceeding.
Step 2 — Layer Imaging and Netlist Extraction
Each copper layer is scanned optically after controlled de-lamination (for multi-layer boards) or reconstructed from X-ray data where non-destructive methods suffice. We extract a complete netlist and run DRC against the original board dimensions.
Step 3 — Schematic Reconstruction
Our power-electronics engineers rebuild the schematic block by block—rectifier, DC bus, inverter bridge, gate drive, control MCU, auxiliary supply, and protection circuits. We cross-reference component values against datasheet application circuits to catch any marking ambiguities on burnt or faded parts.
Step 4 — BOM Verification and Sourcing
Every component is identified to manufacturer part number. For obsolete IGBTs or discontinued optocouplers, we propose pin-compatible replacements with equivalent VCE(sat), switching speed, and package thermal resistance. Replacement suggestions are clearly flagged in the BOM.
Step 5 — Deliverable Review and Handoff
You receive the full file package plus a review call where we walk through any design notes, replacement suggestions, or areas where the original layout deviated from best practice. Files are delivered encrypted, and all source materials are returned or destroyed per your instructions.
How Motor Drive PCB Copy Fits Broader Equipment Programs
Motor drives rarely exist in isolation. They sit inside energy storage systems that need coordinated BMS and inverter boards, or they’re part of industrial machines alongside printing machine control boards and sensor interfaces. We often handle multi-board programs where the drive board is one of several assemblies being recovered simultaneously.
Similarly, many motor drive boards share design DNA with solar inverter boards—half-bridge or full-bridge topologies, DC bus management, and PWM control loops are nearly identical. Experience on one accelerates the other.
For high-reliability applications in oil and gas environments, we pay extra attention to conformal coating documentation, extended temperature component selection, and ATEX/IECEx layout rules that affect creepage beyond standard commercial requirements.
Boards with Blind and Buried Vias
High-density servo drives and compact VFD modules increasingly use microvias and stacked via structures to route gate-driver signals under power planes. If your motor drive board uses blind and buried vias, we cross-section the board to map every via span and ensure the reproduced stackup matches the original fabrication sequence exactly.
IP Protection and NDA Coverage
Motor drive designs often represent significant R&D investment. Every motor drive PCB copy project at our facility operates under a mutual NDA signed before your board ships. We maintain isolated project storage, restrict engineer access by project, and can execute custom IP agreements where your legal team requires specific clauses. Board materials are returned or witnessed-destroyed at project close.
Pricing Signals and Turnaround
| Board Complexity | Layers | Typical Turnaround | Starting Price Range |
|---|---|---|---|
| Simple BLDC controller | 2 | 3–5 days | $350–$600 |
| Standard VFD (≤ 22 kW) | 2–4 | 5–7 days | $600–$1,200 |
| High-power VFD / Servo | 4–6 | 7–10 days | $1,200–$2,500 |
| Multi-board drive system | Mixed | 10–15 days | Custom quote |
Pricing depends on layer count, component density, copper weight, and whether the board requires destructive cross-sectioning. Rush service (40% surcharge) is available for 2–4 layer boards.
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 About Motor Drive PCB Copy
Can you copy a motor drive board if the IGBTs are blown?
Yes. Damaged power devices are identified by package markings and cross-referenced against manufacturer databases. If markings are destroyed, we use X-ray die imaging and pin-out tracing to identify the part. The BOM will list the original P/N and a verified replacement if the original is obsolete.
Do you handle boards with integrated heatsink or metal-core substrates?
We regularly process IMS (insulated metal substrate) and direct-bond copper boards used in compact servo drives. The stackup report will document the metal-core material, dielectric thickness, and thermal conductivity so your fabricator can source matching substrate.
What if my drive board has a programmed MCU or DSP?
Firmware readout is a separate service and requires proof of IP ownership or authorized recovery rights. If the MCU is read-protected, we assess feasibility and provide options under NDA. The PCB copy deliverable (Gerber, BOM, schematic) does not depend on firmware access—you receive complete hardware files regardless.
How do you verify the copied board works correctly?
We perform netlist-vs-original comparison (automated DRC), impedance simulation on critical gate-driver traces, and copper-weight verification. For clients who order prototype fabrication through us, we also offer powered functional testing against the original board as a benchmark.
Can you copy boards from specific VFD brands like ABB, Siemens, or Yaskawa?
We can reverse-engineer the PCB hardware of any brand’s drive board, provided you are the legal owner or authorized agent. Brand-specific firmware or proprietary ASICs may limit full functional replication—we flag these constraints during the feasibility check so there are no surprises.
Related Services
- UPS system board recovery — similar power-stage topology, often paired with drive projects
- BMS board cloning for energy storage — frequently part of the same equipment program
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.
Get a free quote