VoltDRAM
VoltDRAM
Understanding the shift towards unified magnetic standards, higher power limits, and integration into mission-critical infrastructure.
The global wireless charging landscape has entered a new era with the establishment of the WPC Qi2 Standard. Incorporating Magnetic Power Profile (MPP) technology, it ensures perfect alignment and faster charging cycles. Commercial buyers look for high-fidelity magnet arrays and optimized copper coils to prevent thermal throttling.
Wireless charging is no longer limited to 5W or 10W smartphones. Industrial applications require high-wattage power transmission (up to 50W-100W) for robotics, automated guided vehicles (AGVs), medical equipment, and harsh outdoor environments where physical contacts represent a spark or corrosion risk.
Deploying OEM wireless chargers into public furniture, automotive consoles, and hospitality setups requires advanced FOD (Foreign Object Detection) algorithms. Electromagnetic interference (EMI) shields must be structurally integrated into the PCBA to prevent interference with critical Wi-Fi and Bluetooth signals.
Leveraging cleanroom semiconductor fabrication and high-frequency PCBA engineering to deliver next-generation wireless power modules.
VoltDRAM Semiconductor Co., Ltd. is a professional hardware and high-frequency electronics manufacturer specializing in high-performance DRAM solutions and complex power management circuit architectures. Originally registered between 2015–2018, our company has evolved into a reliable global supplier, marrying semiconductor precision with high-power electromagnetic induction systems.
Operating a state-of-the-art cleanroom manufacturing facility spanning approximately 320–480㎡, we deploy high-speed SMT placement lines, automated optical inspection (AOI), and multi-stage electrical stress testing equipment. This physical footprint allows us to generate an annual export revenue of USD 8–18 million. Supported by 6–9 years of export experience and 8–15 years of industry expertise, we bridge the gap between silicon-level performance and robust physical product design.
We work closely with OEM/ODM brands, system integrators, automotive tier-1 suppliers, and device manufacturers to build custom wireless charging receivers and transmitters. Quality is managed via structured ISO systems, employing 35–80 experienced inspectors who subject every single production run to thermal burn-in, signal integrity mapping, and efficiency validation. With 60–300 engineers in our R&D hub, we launch 120–450 new product variants every year, maintaining a stable supply chain network of 600–1,500 partners worldwide.
Wireless charging is an integration of high-frequency power electronics, magnetics, and precise thermal control.
By leveraging our deep semiconductor expertise, we integrate high-performance silicon chips directly into our wireless charger PCBAs. This guarantees ultra-low standby power consumption and dynamic power allocation across multi-coil configurations, maintaining up to 85% conversion efficiency.
We source ultra-pure oxygen-free copper Litz wire and high-permeability MnZn ferrite shielding sheets. This precise configuration confines the magnetic flux loop, minimizing magnetic leakage, protecting peripheral components from warming, and improving mutual coupling coefficients (k).
Through our dedicated laboratory testing workflows (AOI, burn-in, and voltage spike simulators), every custom OEM transmitter module is certified to shut down autonomously when detecting anomalous heat signatures, metal debris, or voltage instabilities.
How our localized industrial clusters and highly optimized logistics deliver cost advantages and rapid manufacturing cycles.
Situated in China's prime electronics hub, we gain instant access to copper coil winders, plastic injection molders, thermal interface materials, and custom packaging. This structural integration keeps lead times for new custom molds within 15 to 25 days.
Exporting to Europe, North America, and Southeast Asia demands absolute compliance with global customs protocols. VoltDRAM leverages its seasoned logistics branch to coordinate sea, air, and express shipments. We offer DDP (Delivered Duty Paid) options and handle all customs documentation for streamlined clearance.
By automating the SMT placement of high-speed drivers and using multi-zone reflow soldering, we limit our defect rates to below 150 PPM (Parts Per Million). This level of quality is rare among non-semiconductor-affiliated consumer factories.
From heavy machinery integration to sleek consumer lifestyle modules, we adapt our power platforms to your target markets.
We engineer custom OEM modules built to withstand high vibrations, extensive temperature variances (-40°C to +85°C), and voltage fluctuations typical of automotive batteries. Includes built-in CAN bus communications and precise fitment profiles for dashboards and armrests.
Long-range under-desk wireless transmitters allow charging through thick wooden, stone, or glass tabletops (up to 35mm thickness). They are ideal for high-traffic environments, airport terminals, hotel lobbies, and co-working spaces, and feature liquid-resistant sealed enclosures.
High-end designs require co-charging capabilities for smartphones, smartwatches, and wireless earbuds simultaneously. We develop custom multi-coil arrays, incorporating dedicated thermal relief pathways and elegant customizable LED statuses.
Enterprise procurement departments frequently experience delays, high NRE (Non-Recurring Engineering) costs, and poor QA from non-compliant suppliers. VoltDRAM directly addresses these hurdles by providing:
Get answers to the most common technical and logistics inquiries regarding our custom OEM wireless charger solutions.
For complete OEM/ODM customized shells, colors, and unique PCBA designs, our standard MOQ starts at 1,000 units. For standard circuit modules (PCBA only) or custom packaging modifications on existing templates, we can accommodate orders starting at 500 units.
We apply high-conductivity thermal pads, specialized heat dissipation planes on the PCB, and composite copper-aluminum heat sinks. This design keeps the surface temperature of the charger below 40°C under full load, preventing thermal throttle triggers in charging devices.
Yes, we provide full support for FCC, CE, RoHS, KC, PSE, and Qi certifications. We offer pre-compliance testing in our in-house labs and work directly with accredited third-party testing agencies (like SGS or TUV) to guarantee your custom design passes certification quickly.
The initial schematic design and board layout take about 7 to 10 days. Once the layout is approved, prototyping and tooling cycles take 15 to 20 days. Finally, pilot-run validation and reliability tests require 7 days before starting mass production.
