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Engineered for OEM/ODM customers who need compact, low‑noise, and cost‑effective power conversion in USA and other English‑speaking markets.
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1. High component cost – Traditional SEPIC designs rely on multiple discrete inductors, driving BOM prices up 30‑45%.
2. Size & weight penalties – Separate inductors increase board real‑estate, limiting compact product launches.
3. Noise & EMI issues – Unmatched magnetic characteristics cause ripple spikes, risking certification failures (FCC, CE).
4. Long lead times – Sourcing from fragmented suppliers adds 6‑8 weeks to project schedules.
5. Inconsistent quality – Variations in core material lead to 5‑10% efficiency loss over time.
Data point: A 2025 industry survey of 250 US OEMs showed 38% of projects missed their launch window due to inductive component delays.
See the Solution| Parameter | Typical Value | Custom Range |
|---|---|---|
| Inductance (L1/L2) | 10 µH / 10 µH | 5‑30 µH |
| Rated Current | 3 A | 1‑10 A |
| DC Resistance (DCR) | 0.12 Ω | 0.05‑0.20 Ω |
| Operating Frequency | 300 kHz‑1 MHz | 200 kHz‑2 MHz |
| Temperature Range | ‑40 °C ~ +125 °C | ‑55 °C ~ +150 °C |
| Package Size | 12 mm × 12 mm × 5 mm | Custom dimensions |
coupled-inductor High-Current-Ring-Power-Inductor inductor-selection-guide high-frequency-inductors
• Industrial Power Supplies – 48 V → 12 V SEPIC converters for PLCs, achieving 92% efficiency.
• Medical Imaging Equipment – Low‑noise SEPIC modules that meet IEC 60601‑1 standards.
• Solar Inverters (New Energy) – Boost‑buck topology with coupled inductors reduces board area by 35%.
• Automotive DC‑DC Converters – High‑temperature variant (‑55 °C ~ +150 °C) passed ISO 26262 functional safety tests.
“Switching to Xinchangda’s coupled SEPIC reduced our board size by 28% and cut component cost by 38%. Delivery was on‑time within 3 weeks.” – John M., Senior Design Engineer, VoltTech USA
“The low‑EMI performance passed our FCC Class B testing without additional filters.” – Linda S., VP of Product Development, MedPulse Inc.
Compliance & Certifications: CE, FCC, RoHS, ISO 9001, GS, CB, VDE, SAA, HACCP/GMP, IPPC.
A coupled inductor SEPIC integrates the two inductors of a SEPIC converter into a single magnetic component, reducing BOM cost, board space, and EMI while maintaining high conversion efficiency.
Yes. Our R&D team (10 engineers) can tailor core material, inductance, current rating, and package size to meet your exact application requirements.
Prototype: 2 weeks (including sample testing). Mass production: 4 weeks after design approval, with up to 450 k units/month capacity.
We offer DDP (Delivered Duty Paid) shipping, work with major freight forwarders, and provide all necessary certificates for smooth customs clearance.
24/7 technical hotline, free design verification (up to 5 units), and a 12‑month warranty covering material and workmanship.
Risk‑Free Offer: Free 5‑piece sample, no minimum order, and a 30‑day money‑back guarantee if performance does not meet specifications.
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Mark T., Procurement Manager, GreenPower Systems – “The 30% price reduction enabled us to meet our budget for the upcoming solar‑farm rollout. Delivery was on schedule, and the product passed all UL‑certifications on first try.”
Susan L., Operations Lead, MedTech Innovations – “Low‑noise performance saved us $12k in extra shielding costs. The sample arrived in 3 days – truly fast.”
David K., Senior Engineer, AutoVolt Corp. – “Custom high‑temp variant performed flawlessly at 150 °C during endurance testing. Xinchangda’s technical support was excellent.”
Emily Chen, Ph.D. – Senior Application Engineer at Huizhou Xinchangda Electronic. With 12 years of experience designing magnetic components for aerospace, medical, and renewable‑energy markets, Emily leads the global technical support team and has authored 30+ IEEE papers on high‑frequency inductors. She regularly advises Fortune‑500 procurement teams on cost‑effective power solutions.
Contact Emily directly: grace01@xcdmagnetic.com | +86 131 2825 6415
