{"id":14899,"date":"2026-07-20T09:00:00","date_gmt":"2026-07-20T07:00:00","guid":{"rendered":"https:\/\/tps-elektronik.com\/?p=14899"},"modified":"2026-06-23T08:42:48","modified_gmt":"2026-06-23T06:42:48","slug":"tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers","status":"publish","type":"post","link":"https:\/\/tps-elektronik.com\/en\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\/","title":{"rendered":"TPS High Frequency Coil Winding Service: Litz Wire and Planar Inductor Winding for GaN and SiC Switch Mode Power Supply Transformers"},"content":{"rendered":"<article class=\"blog-post\" lang=\"en\"><header>\n<p>System integrators, panel builders, and procurement teams rarely fail because they lack a circuit design. They lose time\u2014and budget. When the magnetic components in a high\u2011frequency GaN or SiC power converter fail to meet efficiency and EMI targets due to excessive AC winding losses. At switching frequencies above 500\u202fkHz, conventional solid\u2011wire windings suffer from severe skin and proximity effects that increase AC resistance by an order of magnitude. Which turning the transformer or inductor into a heater rather than an efficient energy transfer element.<br \/>TPS Elektronik\u2019s <strong>high frequency coil winding service<\/strong> addresses these losses at their physical root. By specializing in Litz wire winding and planar inductor construction optimized for the MHz switching regime, TPS provides custom magnetic components that maintain high Q factor and low AC resistance. Which enabling wide\u2011bandgap semiconductor designs to achieve their full efficiency and power density potential.<\/p>\n<p><a class=\"cta-primary\" href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">Request a high\u2011frequency coil winding consultation \u2192<\/a><\/p>\n<\/header><nav class=\"toc\" aria-label=\"Table of contents\">\n<h2 id=\"toc-en\">Table of contents<\/h2>\n<ol>\n<li><a href=\"#en-why\">Why winding technology matters for GaN and SiC power supplies<\/a><\/li>\n<li><a href=\"#en-litz\">Litz wire winding: design, strand count, and AC resistance reduction<\/a>\n<ol>\n<li><a href=\"#en-litz-skin\">Skin effect and proximity effect in high\u2011frequency windings<\/a><\/li>\n<li><a href=\"#en-litz-construction\">Litz wire construction and selection for MHz operation<\/a><\/li>\n<\/ol>\n<\/li>\n<li><a href=\"#en-planar\">Planar inductor and transformer winding: low\u2011profile, high\u2011frequency performance<\/a><\/li>\n<li><a href=\"#en-materials\">Core materials and insulation for wide\u2011bandgap converters<\/a><\/li>\n<li><a href=\"#en-quality\">Electrical testing and quality assurance at high frequency<\/a><\/li>\n<li><a href=\"#en-applications\">Application examples: LLC resonant, phase\u2011shifted full\u2011bridge, and active clamp flyback<\/a><\/li>\n<li><a href=\"#en-rfq\">RFQ checklist for high\u2011frequency coil winding<\/a><\/li>\n<li><a href=\"#en-faq\">FAQ<\/a><\/li>\n<\/ol>\n<\/nav>\n<section id=\"en-why\">\n<h2>1. Why winding technology matters for GaN and SiC power supplies<\/h2>\n<p>Wide\u2011bandgap semiconductors\u2014GaN HEMTs and SiC MOSFETs\u2014enable power converters to switch at frequencies from 500\u202fkHz to several MHz, dramatically reducing the size of passive components. However, this frequency increase shifts the dominant loss mechanism in magnetic components from DC copper loss to AC winding loss. The skin effect confines current to the outer surface of a conductor. And the proximity effect induces eddy currents in adjacent turns, both of which increase the effective AC resistance (Rac) of the winding. At 1\u202fMHz, a solid copper wire with a diameter of just 0.5\u202fmm exhibits a skin depth of approximately 65\u202f\u00b5m. Which meaning that most of the conductor cross\u2011section carries no current. The resulting Rac can five to ten times higher than the DC resistance.<\/p>\n<p><strong>High frequency coil winding<\/strong> techniques\u2014specifically Litz wire construction and planar winding geometries. Which are the only practical solutions to this problem. TPS Elektronik\u2019s winding service specifically engineered for these MHz\u2011domain applications. Which providing custom transformers and inductors that maintain efficiency and thermal performance at frequencies where standard magnetic components fail. For a broader context on how these coils integrate into production\u2011ready designs, see our resource on <a href=\"https:\/\/tps-elektronik.com\/en\/ems-winding-goods-coil-winding-service\/\">EMS winding goods and coil winding service<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-14982\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/Litz-Wire-High-Frequency-Coil-Winding-GaN-SMPS-Transformer-Low-AC-Resistance-\u2013-TPS-Elektronik-1.jpg\" alt=\"Litz Wire High Frequency Coil Winding GaN SMPS Transformer Low AC Resistance \u2013 TPS Elektronik Litzendraht Hochfrequenz-Spulenwicklung GaN SMPS Transformator Niedriger AC-Widerstand \u2013 TPS Elektronik\" width=\"1361\" height=\"755\" \/><\/p>\n<\/section>\n<section id=\"en-litz\">\n<h2>2. Litz wire winding: design, strand count, and AC resistance reduction<\/h2>\n<p>Litz wire is the primary solution for high\u2011frequency windings in the range of approximately 50\u202fkHz to 2\u202fMHz. It consists of multiple individually insulated strands twisted in a specific pattern that equalizes the current distribution among all strands, effectively increasing the conductive cross\u2011section at high frequency. The number of strands, their individual diameter. And the twisting pattern must be carefully selected based on the operating frequency and the winding geometry. TPS designs each Litz winding to the specific frequency, current waveform, and space constraints of the application.<\/p>\n<h3 id=\"en-litz-skin\">2.1 Skin effect and proximity effect in high\u2011frequency windings<\/h3>\n<p>The skin effect is the tendency of high\u2011frequency current to flow near the surface of a conductor. The depth at which current density falls to 1\/e of its surface value\u2014the skin depth\u2014is approximately 65\u202f\u00b5m at 1\u202fMHz for copper. The proximity effect, which often more severe than the skin effect in multi\u2011layer windings, arises from the magnetic field of adjacent turns inducing eddy currents. In a solid\u2011wire transformer winding with multiple layers, the proximity effect can increase Rac by a factor of 10 to 100 compared to Rdc. Which generating unacceptable heat and reducing efficiency.<\/p>\n<p>Litz wire mitigates both effects. By subdividing the conductor into many fine strands. Each with a diameter smaller than the skin depth. And twisting them so that each strand occupies every radial position within the bundle over a short distance, the current forced to distribute uniformly. TPS selects the strand diameter, the number of strands, and the twist pitch based on the application\u2019s fundamental frequency and the harmonic content of the current waveform, with design calculations supported by finite\u2011element analysis for critical applications.<\/p>\n<h3 id=\"en-litz-construction\">2.2 Litz wire construction and selection for MHz operation<\/h3>\n<p>For a 1\u202fMHz LLC resonant converter, a typical Litz wire specification might use 100 strands of 0.05\u202fmm diameter (AWG 44), each coated with a solderable polyurethane insulation. TPS can handle Litz wire ranging from a few strands to over 1,000 strands, with overall diameters from under 1\u202fmm to several millimeters. The wire is wound on high\u2011precision CNC machines with controlled tension to avoid strand breakage and insulation damage. The termination process\u2014stripping the individual strand insulations and soldering or crimping to the terminal\u2014is a critical step that TPS performs under documented procedures to ensure reliable connections. For a deeper look at wire insulation types, see our guide on <a href=\"https:\/\/tps-elektronik.com\/en\/wire-insulation-materials-types-applications\/\">wire insulation materials, types, and applications<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-14612\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57081.jpg\" alt=\"transformer coil winding\" width=\"1920\" height=\"1280\" srcset=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57081.jpg 1920w, https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57081-600x400.jpg 600w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/p>\n<\/section>\n<section id=\"en-planar\">\n<h2>3. Planar inductor and transformer winding: low\u2011profile, high\u2011frequency performance<\/h2>\n<p>For converters operating above 1\u202fMHz where Litz wire becomes less effective due to strand proximity effects, and for applications demanding the lowest possible component height, planar magnetic structures offer an alternative. A planar winding replaces the traditional round wire with flat copper traces on a printed circuit board or stamped copper lead\u2011frame. The windings arranged in multiple layers of the PCB, separated by thin insulation (typically FR\u20114 or polyimide), and surround a low\u2011profile ferrite core.<\/p>\n<p>Planar windings provide several advantages for high\u2011frequency operation. The flat conductor geometry reduces AC resistance compared to round wire because the current is distributed across a wider surface area. The inter\u2011layer spacing can precisely controlled, minimizing leakage inductance and providing excellent repeatability in production. TPS designs planar transformers and inductors for frequencies up to several MHz. Which using both PCB\u2011embedded windings and discrete planar cores. The mechanical integration of these components. Which including core clamping, thermal management, and termination. It is handled as part of the coil winding service, ensuring a production\u2011ready assembly. Examples of these production\u2011ready designs are showcased in our article on <a href=\"https:\/\/tps-elektronik.com\/en\/ems-winding-goods-toroidal-coils-dv-dt-chokes-production-ready-transformers\/\">toroidal coils and production\u2011ready transformers<\/a>.<\/p>\n<\/section>\n<section id=\"en-materials\">\n<h2>4. Core materials and insulation for wide\u2011bandgap converters<\/h2>\n<p>The choice of magnetic core material is as critical as the winding technique. For GaN converters switching at 1\u202fMHz and above, traditional power ferrites (such as 3C94 or N87) may exhibit excessive core losses. TPS selects core materials based on the specific frequency, flux density, and temperature requirements of the design. Low\u2011loss MnZn ferrites optimized for 1\u20133\u202fMHz operation (such as 3F4, N49, or equivalent) are the standard choice for resonant inductors and transformers. For applications above 5\u202fMHz, NiZn ferrites offer lower losses but at reduced permeability.<\/p>\n<p>Insulation requirements are also more stringent at high frequency. The high dv\/dt associated with GaN switching (often exceeding 100\u202fV\/ns) places stress on inter\u2011winding capacitance and insulation. TPS uses appropriate insulation materials. Which including triple\u2011insulated wire for reinforced isolation, polyimide tape for inter\u2011layer insulation. And margin tape for creepage compliance\u2014all selected to meet the safety standards of <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/69308\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">IEC\u202f62368\u20111<\/a>. For a detailed guide on magnetic fields and coil configurations, see our resource on <a href=\"https:\/\/tps-elektronik.com\/en\/helmholtz-coil-uniform-magnetic-field-guide\/\">Helmholtz coil and uniform magnetic field applications<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-14987\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/Skin-Effect-Proximity-Effect-Comparison-Solid-Wire-vs-Litz-Wire-High-Frequency-Winding-Diagram-\u2013-TPS-Elektronik-3-1.jpg\" alt=\"Skin Effect Proximity Effect Comparison Solid Wire vs Litz Wire High Frequency Winding Diagram \u2013 TPS Elektronik Skin-Effekt Proximity-Effekt Vergleich Massivdraht vs Litzendraht Hochfrequenz-Wicklungsdiagramm \u2013 TPS Elektronik\" width=\"1920\" height=\"1078\" \/><\/p>\n<\/section>\n<section id=\"en-quality\">\n<h2>5. Electrical testing and quality assurance at high frequency<\/h2>\n<p>Standard LCR meters operating at 1\u202fkHz or 10\u202fkHz are inadequate for characterizing a winding designed for MHz operation. TPS performs electrical testing at the actual operating frequency of the component. This includes measurement of inductance, AC resistance (Rac). And Q factor at frequencies up to 2\u202fMHz using precision impedance analyzers. Leakage inductance and inter\u2011winding capacitance are also measured, as these parameters directly influence the switching behavior of GaN and SiC converters.<\/p>\n<p>Every high\u2011frequency winding produced by TPS undergoes 100\u202f% electrical testing. The test report, provided with each production lot. Which includes all measured parameters, the test conditions, and a comparison to the specification. For safety\u2011critical applications, hipot testing at the required isolation voltage performed. This documented quality process is consistent with TPS\u2019s broader EMS quality framework, as described in our overview of <a href=\"https:\/\/tps-elektronik.com\/en\/ems-winding-goods-medical-high-frequency-transformer-coil-winding\/\">medical high\u2011frequency transformer coil winding<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-14319\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57085.jpg\" alt=\"pcb component procurement\" width=\"1920\" height=\"1280\" srcset=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57085.jpg 1920w, https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57085-600x400.jpg 600w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/p>\n<\/section>\n<section id=\"en-applications\">\n<h2>6. Application examples: LLC resonant, phase\u2011shifted full\u2011bridge, and active clamp flyback<\/h2>\n<p>TPS high\u2011frequency winding services support the most common topologies in modern wide\u2011bandgap power conversion:<\/p>\n<ul>\n<li><strong>LLC resonant converters<\/strong>: Require a resonant inductor and a transformer with tightly controlled leakage inductance and low AC resistance. TPS provides Litz\u2011wire\u2011wound resonant inductors and interleaved transformers optimized for operation from 500\u202fkHz to 2\u202fMHz.<\/li>\n<li><strong>Phase\u2011shifted full\u2011bridge converters<\/strong>: Use an output inductor that must handle high DC bias with low AC loss. TPS designs gapped ferrite inductors with Litz wire windings to minimize both core and copper losses.<\/li>\n<li><strong>Active clamp flyback converters<\/strong>: Popular in USB\u2011PD chargers up to 100\u202fW, requiring compact transformers with low leakage inductance and high efficiency at frequencies above 300\u202fkHz. TPS winds these transformers with fine Litz wire on small EFD or RM cores.<\/li>\n<li><strong>GaN\u2011based class\u2011E and class\u2011\u03a6 resonant inverters<\/strong>: For wireless power transfer and RF applications, TPS provides air\u2011core and ferrite\u2011core coils with precise inductance values and high Q factors.<\/li>\n<\/ul>\n<p>These applications highlight the critical role of custom winding design in achieving the performance targets that wide\u2011bandgap semiconductors promise. By partnering with TPS, system integrators and procurement teams can access a single source for both the magnetic components and the broader EMS integration that brings a power supply from design to production.<\/p>\n<\/section>\n<section id=\"en-rfq\">\n<h2>7. RFQ checklist for high\u2011frequency coil winding<\/h2>\n<ul>\n<li><strong>Electrical specification<\/strong>: Topology (LLC, PSFB, flyback, etc.), switching frequency, nominal input\/output voltage, power level.<\/li>\n<li><strong>Inductance and turns ratio<\/strong>: Primary inductance, leakage inductance limit, turns ratio (NP:NS:NAux).<\/li>\n<li><strong>Winding type<\/strong>: Litz wire (specify strand count\/diameter if known) or planar (PCB\u2011embedded or discrete).<\/li>\n<li><strong>Core preference<\/strong>: Core type and size (EE, EFD, RM, PQ, planar E\u2011I, etc.), or maximum mechanical envelope.<\/li>\n<li><strong>Isolation requirements<\/strong>: Basic, reinforced, or functional; working voltage and required hipot test voltage.<\/li>\n<li><strong>Target AC resistance<\/strong>: Maximum acceptable Rac at the switching frequency, if known.<\/li>\n<li><strong>Quantities and schedule<\/strong>: Prototype, pilot, and series production volumes.<\/li>\n<li><strong>Documentation<\/strong>: Required test reports, frequency\u2011domain measurements, and safety certificates.<\/li>\n<\/ul>\n<p><a class=\"cta-primary\" href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">Submit your high\u2011frequency coil winding RFQ \u2192<\/a><\/p>\n<\/section>\n<section id=\"en-faq\">\n<h2>8. FAQ<\/h2>\n<p><strong>What is the highest frequency TPS can support for Litz wire windings?<\/strong><br \/>TPS can provide Litz wire windings optimized for fundamental frequencies up to approximately 2\u202fMHz. Above this frequency, planar winding techniques are typically recommended to minimize strand proximity effects within the Litz bundle.<\/p>\n<p><strong>Can TPS wind planar transformers on customer\u2011supplied PCBs?<\/strong><br \/>Yes. TPS can either design the planar winding into a multi\u2011layer PCB or use a customer\u2011supplied PCB and assemble the core and mechanical hardware to complete the transformer.<\/p>\n<p><strong>How does TPS measure AC resistance at high frequency?<\/strong><br \/>TPS uses precision impedance analyzers capable of measuring Rac and Q factor at frequencies up to 2\u202fMHz, with Kelvin\u2011connected fixtures to eliminate lead resistance errors.<\/p>\n<p><strong>What core materials are available for high\u2011frequency designs?<\/strong><br \/>TPS stocks a wide range of low\u2011loss MnZn ferrites (3F4, N49, and equivalents) optimized for 1\u20133\u202fMHz operation, as well as NiZn ferrites for higher\u2011frequency applications.<\/p>\n<p><strong>Where can I learn more about TPS\u2019s coil winding capabilities?<\/strong><br \/>Visit the <a href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">TPS winding goods service page<\/a>, or read our technical guides on <a href=\"https:\/\/tps-elektronik.com\/en\/ems-winding-goods-toroidal-coils-dv-dt-chokes-production-ready-transformers\/\">toroidal coils and chokes<\/a> and <a href=\"https:\/\/tps-elektronik.com\/en\/ems-winding-goods-medical-high-frequency-transformer-coil-winding\/\">medical high\u2011frequency transformer winding<\/a>.<\/p>\n<\/section>\n<footer style=\"background: #2d5797; padding: 30px; border-radius: 14px; margin-top: 40px;\">\n<p style=\"color: #ffffff; font-size: 16px; line-height: 1.6; margin: 0;\"><strong>Ready to optimize your GaN or SiC converter with a custom high\u2011frequency magnetic design?<\/strong><br \/>Contact TPS Elektronik for a precision coil winding service that delivers the low AC resistance and high Q your design demands.<br \/><a style=\"color: #ffffff; font-weight: 600; text-decoration: underline; display: block; margin-top: 10px;\" href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">Request your high\u2011frequency coil winding 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-->","protected":false},"excerpt":{"rendered":"<p>System integrators, panel builders, and procurement teams rarely fail because they lack a circuit design. They lose time\u2014and budget. When the magnetic components in a high\u2011frequency GaN or SiC power converter fail to meet efficiency and EMI targets due to excessive AC winding losses. At switching frequencies above 500\u202fkHz, conventional solid\u2011wire windings suffer from severe\u2026 <a href=\"https:\/\/tps-elektronik.com\/en\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\/\">Read More &raquo;<\/a><\/p>\n","protected":false},"author":9,"featured_media":14612,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[57],"tags":[],"class_list":["post-14899","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-content"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>TPS High Frequency Coil Winding Service: Litz Wire and Planar Inductor Winding for GaN and SiC Switch Mode Power Supply Transformers - TPS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tps-elektronik.com\/en\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TPS High Frequency Coil Winding Service: Litz Wire and Planar Inductor Winding for GaN and SiC Switch Mode Power Supply Transformers - TPS\" \/>\n<meta property=\"og:description\" content=\"System integrators, panel builders, and procurement teams rarely fail because they lack a circuit design. They lose time\u2014and budget. When the magnetic components in a high\u2011frequency GaN or SiC power converter fail to meet efficiency and EMI targets due to excessive AC winding losses. At switching frequencies above 500\u202fkHz, conventional solid\u2011wire windings suffer from severe\u2026 Read More &raquo;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tps-elektronik.com\/en\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\/\" \/>\n<meta property=\"og:site_name\" content=\"TPS\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-20T07:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57081.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1280\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Tang Marcus\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tang Marcus\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/tps-elektronik.com\\\/en\\\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tps-elektronik.com\\\/en\\\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\\\/\"},\"author\":{\"name\":\"Tang Marcus\",\"@id\":\"https:\\\/\\\/tps-elektronik.com\\\/en\\\/#\\\/schema\\\/person\\\/2c19fd053095d0c1ae253e8e62427b8c\"},\"headline\":\"TPS High Frequency Coil Winding Service: Litz Wire and Planar Inductor Winding for GaN and SiC Switch Mode Power Supply Transformers\",\"datePublished\":\"2026-07-20T07:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/tps-elektronik.com\\\/en\\\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\\\/\"},\"wordCount\":1989,\"image\":{\"@id\":\"https:\\\/\\\/tps-elektronik.com\\\/en\\\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tps-elektronik.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/\u7ebf\u57081.jpg\",\"articleSection\":[\"Blog Content\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/tps-elektronik.com\\\/en\\\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\\\/\",\"url\":\"https:\\\/\\\/tps-elektronik.com\\\/en\\\/tps-high-frequency-coil-winding-service-litz-wire-and-planar-inductor-winding-for-gan-and-sic-switch-mode-power-supply-transformers\\\/\",\"name\":\"TPS High Frequency Coil Winding Service: Litz Wire and Planar Inductor Winding for GaN and SiC Switch Mode Power Supply Transformers - 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