{"id":15504,"date":"2026-08-07T09:00:00","date_gmt":"2026-08-07T07:00:00","guid":{"rendered":"https:\/\/tps-elektronik.com\/?p=15504"},"modified":"2026-07-14T07:26:09","modified_gmt":"2026-07-14T05:26:09","slug":"what-is-tps-dc-dc-converter-for-industrial-robot-joint-servo-drives-and-why-it-is-essential-for-compact-high-efficiency-power","status":"publish","type":"post","link":"https:\/\/tps-elektronik.com\/en\/what-is-tps-dc-dc-converter-for-industrial-robot-joint-servo-drives-and-why-it-is-essential-for-compact-high-efficiency-power\/","title":{"rendered":"What Is TPS DC\u2011DC Converter for Industrial Robot Joint Servo Drives and Why It Is Essential for Compact High Efficiency Power?"},"content":{"rendered":"<article class=\"product-blog\" lang=\"en\"><header>\n<p>For system integrators, panel builders, and engineering\u2011driven procurement teams, selecting a power supply for a robotic joint is not only about wattage. It also involves extreme compactness, galvanic isolation to protect sensitive encoder and logic circuits from the noisy motor drive bus. The ability to operate reliably in a sealed, high\u2011temperature environment. And the long\u2011term reliability to avoid costly downtime on a production line. When a DC\u2011DC converter fails inside the wrist joint of a six\u2011axis robot, the repair cost is not the component itself. Which is the hours of lost production.<\/p>\n<p>The <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/print-modules-dcdc-module-3\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>TPS DC DC converter<\/strong><\/a> series, including the HCLS1 family, is engineered precisely for these demanding embedded power applications. With a SIP4 package, 1500\u202fVDC isolation, an operating temperature range of \u201140\u202f\u00b0C to +105\u202f\u00b0C. And an MTBF of 3,500,000 hours, these modules provide the safe, efficient, and space\u2011saving power conversion that modern industrial robot joint servo drives demand. This article examines the TPS DC\u2011DC converter platform and explains why it is the preferred choice for powering control electronics at the heart of robotic automation.<\/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 DC DC converters are critical inside robot joints<\/a><\/li>\n<li><a href=\"#en-tps\">TPS HCLS1 DC DC converter platform: compact, isolated, and efficient<\/a><\/li>\n<li><a href=\"#en-isolation\">Isolation, safety, and noise immunity for servo control<\/a><\/li>\n<li><a href=\"#en-environmental\">Environmental resilience: wide temperature and high reliability<\/a><\/li>\n<li><a href=\"#en-integration\">Mechanical integration: SIP4 packaging and system design<\/a><\/li>\n<li><a href=\"#en-compliance\">Compliance and safety: IEC\u202f62368\u20111 and UL94V\u20110<\/a><\/li>\n<li><a href=\"#en-applications\">Application guidance: robot joints, AGVs, and factory automation<\/a><\/li>\n<li><a href=\"#en-rfq\">RFQ checklist for robot DC DC converter<\/a><\/li>\n<li><a href=\"#en-faq\">Frequently Asked Questions<\/a><\/li>\n<\/ol>\n<\/nav>\n<section>\n<h2 id=\"en-why\">Why DC DC converters are critical inside robot joints<\/h2>\n<p>An industrial robot joint contains a densely packed assembly of a servo motor, a position encoder, a brake, and a local servo drive. The main DC bus, typically 48\u202fV or 24\u202fV, supplies the motor windings, but the control electronics\u2014the microcontroller, the encoder interface, the fieldbus communication chip. Which require a clean, stable low voltage, typically 5\u202fV or 3.3\u202fV. A <strong>compact DC DC converter<\/strong> mounted directly on the servo drive PCB steps down the higher bus voltage to these logic levels with high efficiency and minimal heat dissipation. This is essential for maintaining safe operating temperatures inside a sealed, unventilated joint.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-15573 size-full\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/0714-TPS-HCLS105S05-DC-DC-Module.png\" alt=\"TPS-HCLS105S05-DC DC Module\" width=\"1024\" height=\"683\" srcset=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/0714-TPS-HCLS105S05-DC-DC-Module.png 1024w, https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/0714-TPS-HCLS105S05-DC-DC-Module-600x400.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>Beyond voltage conversion, the DC DC converter provides galvanic isolation between the noisy motor drive power stage and the sensitive digital control circuits. Without this isolation, switching noise from the PWM inverter can couple into the encoder signals, causing position errors. Or disrupt the fieldbus communication, leading to a complete joint shutdown. A dedicated <strong>isolated DC\u2011DC module<\/strong>, such as the TPS\u2011HCLS105S05, solves both the voltage conversion and the isolation requirements in a single, miniature component. For a broader look at how power components integrate into manufacturing systems, see the <a href=\"https:\/\/tps-elektronik.com\/en\/services\/\">TPS services overview<\/a>.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-tps\">TPS HCLS1 DC DC converter platform: compact, isolated, and efficient<\/h2>\n<p>The TPS\u2011HCLS1 series is a family of low\u2011power, high\u2011reliability isolated DC\u2011DC converters housed in an industry\u2011standard SIP4 package. Designed for automated insertion and wave soldering, these modules are optimized for high\u2011volume PCB assembly. The series offers a wide range of input voltages\u20143.3\u202fV, 5\u202fV, and 12\u202fV\u2014and provides regulated outputs including 3.3\u202fV, 5\u202fV, 9\u202fV, 12\u202fV, 15\u202fV, and 24\u202fV. This flexibility allows a single module type to standardized across multiple robot models with different logic voltage requirements. The entire range is available on the <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/print-modules-dcdc-module-3\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS DC\u2011DC module category page<\/a>.<\/p>\n<p>Efficiency is a critical parameter in a sealed robot joint where there is no forced\u2011air cooling. The TPS\u2011HCLS1 series achieves a typical efficiency of 89\u202f%, minimizing the heat dissipated into the joint and reducing the temperature rise of surrounding components. The module\u2019s internal short\u2011circuit protection ensures that a fault on the logic supply does not propagate back to the main DC bus. Which protecting the servo drive\u2019s power stage. This internal protection, combined with the module\u2019s inherent ruggedness. Which supports the long service life required in industrial automation.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15568\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/Isolated-DC\u2011DC-Converter-Installed-Inside-Robot-Joint-Servo-Drive-PCB-\u2013-TPS-Elektronik-2.jpg\" alt=\"Isolated DC\u2011DC Converter Installed Inside Robot Joint Servo Drive PCB \u2013 TPS Elektronik Isolierter DC\u2011DC\u2011Wandler eingebaut in Roboter\u2011Gelenk\u2011Servoantriebs\u2011Leiterplatte \u2013 TPS Elektronik\" width=\"1920\" height=\"1079\" \/><\/p>\n<\/section>\n<section>\n<h2 id=\"en-isolation\">Isolation, safety, and noise immunity for servo control<\/h2>\n<p>The 1500\u202fVDC input\u2011to\u2011output isolation provided by the TPS\u2011HCLS1 modules is a critical safety and performance feature. In a robot joint, the motor drive bus can experience voltage transients from the PWM switching of the inverter. Without adequate isolation, these transients can cross into the logic supply, causing data corruption or permanent damage to the control ICs. The TPS module\u2019s isolation barrier, tested at 1500\u202fVDC, provides a robust defense against these transients. Which ensuring the integrity of the control electronics. This isolation also simplifies the grounding scheme of the servo drive, as the logic ground can float independently of the power ground. For a wider discussion on electromagnetic compatibility in integrated systems, see the <a href=\"https:\/\/tps-elektronik.com\/en\/news-insights\/\">TPS news and insights<\/a> section.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15563\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/1500VDC-Isolation-Barrier-DC\u2011DC-Converter-Safety-Diagram-Robotic-Joint-\u2013-TPS-Elektronik-3.jpg\" alt=\"1500VDC Isolation Barrier DC\u2011DC Converter Safety Diagram Robotic Joint \u2013 TPS Elektronik 1500VDC\u2011Isolationsbarriere DC\u2011DC\u2011Wandler Sicherheitsdiagramm Roboter\u2011Gelenk \u2013 TPS Elektronik\" width=\"1920\" height=\"1079\" \/><\/p>\n<\/section>\n<section>\n<h2 id=\"en-environmental\">Environmental resilience: wide temperature and high reliability<\/h2>\n<p>Robot joints operate in demanding environments. A welding robot experiences high ambient heat. A cleanroom robot may undergo frequent sterilization cycles. The TPS\u2011HCLS1 series rated for operation across an ambient temperature range of \u201140\u202f\u00b0C to +105\u202f\u00b0C. Which ensuring reliable startup in freezing conditions and continuous operation in high\u2011temperature factory environments without derating. The module\u2019s UL94V\u20110 flame\u2011retardant plastic case provides additional safety. Which preventing the spread of fire in the unlikely event of a catastrophic component failure.<\/p>\n<p>Reliability is quantified by the module\u2019s MTBF of 3,500,000 hours (calculated per Telcordia standards). In a factory with hundreds of robots, this translates to an expected service life measured in decades. Which minimizing the risk of unplanned downtime due to a power supply failure. This long\u2011term reliability is essential for mission\u2011critical automation cells where any stoppage incurs significant cost. The module\u2019s robust design is further validated by its wide input voltage tolerance and built\u2011in protection features.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-integration\">Mechanical integration: SIP4 packaging and system design<\/h2>\n<p>The SIP4 (Single In\u2011line Package, 4 pins) form factor of the TPS\u2011HCLS1 series is a key enabler of compact servo drive design. With a footprint of approximately 12\u202f\u00d7\u202f9\u202fmm and a height of 7\u202fmm, the module occupies minimal board space. Which allowing the servo drive PCB to be shrunk to fit within the tight confines of a robot joint. The standard pinout simplifies PCB layout and enables automated assembly. Which reducing manufacturing cost and improving throughput. The module\u2019s international standard pin\u2011out also provides a second\u2011source option, giving procurement teams supply chain flexibility. For more insights into component integration, explore the <a href=\"https:\/\/tps-elektronik.com\/en\/category\/blog-content\/\">TPS blog content<\/a> section.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-compliance\">Compliance and safety: IEC\u202f62368\u20111 and UL94V\u20110<\/h2>\n<p>The TPS DC\u2011DC converter designed as a component for integration into equipment that complies with <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/69308\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">IEC\u202f62368\u20111<\/a>, the hazard\u2011based safety standard for audio\/video, information, and communication technology equipment. This standard addresses protection against electric shock, fire, mechanical, and thermal hazards. All relevant to a sealed robotic joint. The UL94V\u20110 flammability rating of the module\u2019s casing ensures that it meets the strict fire safety requirements of industrial machinery. As mandated by standards such as IEC\u202f60204\u20111 for the electrical equipment of machines. TPS provides a Declaration of Conformity with each shipment, supporting the robot manufacturer\u2019s own CE marking or NRTL listing process.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15558\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/UL94V\u20110-Flame\u2011Retardant-DC\u2011DC-Converter-Safety-Label-SIP4-Robot-Application-\u2013-TPS-Elektronik-5.jpg\" alt=\"UL94V\u20110 Flame\u2011Retardant DC\u2011DC Converter Safety Label SIP4 Robot Application \u2013 TPS Elektronik UL94V\u20110 flammhemmender DC\u2011DC\u2011Wandler Sicherheitsetikett SIP4 Roboter\u2011Anwendung \u2013 TPS Elektronik\" width=\"1920\" height=\"1079\" \/><\/p>\n<\/section>\n<section>\n<h2 id=\"en-applications\">Application guidance: robot joints, AGVs, and factory automation<\/h2>\n<ul>\n<li><strong>Robot joint servo drives<\/strong>: Providing isolated 5\u202fV or 3.3\u202fV logic power from a 24\u202fV or 48\u202fV DC bus, with the compact size and high temperature rating essential for sealed joint enclosures.<\/li>\n<li><strong>Automated Guided Vehicles (AGVs)<\/strong>: Powering control and communication modules from the vehicle\u2019s battery bus, with wide input tolerance to accommodate battery voltage fluctuations.<\/li>\n<li><strong>Distributed factory automation I\/O<\/strong>: Generating isolated local logic supplies from a 24\u202fV field bus, reducing wiring complexity and improving noise immunity.<\/li>\n<\/ul>\n<\/section>\n<section>\n<h2 id=\"en-rfq\">RFQ checklist for robot DC DC converters<\/h2>\n<ul>\n<li><strong>Input voltage<\/strong>: Nominal DC bus voltage and its tolerance range (e.g., 24\u202fV \u00b120\u202f%).<\/li>\n<li><strong>Output voltage and current<\/strong>: Required logic voltage and maximum load current.<\/li>\n<li><strong>Isolation voltage<\/strong>: Minimum required isolation (e.g., 1500\u202fVDC).<\/li>\n<li><strong>Temperature range<\/strong>: Expected ambient temperature range at the PCB location inside the joint.<\/li>\n<li><strong>Quantity and schedule<\/strong>: Prototype, pilot, and series production volumes.<\/li>\n<li><strong>Certifications<\/strong>: Applicable safety standards (IEC\u202f62368\u20111) and flammability ratings.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.shop-tps.com\/shop\/category\/print-modules-dcdc-module-3\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>Browse TPS DC\u2011DC converters and request a quote \u2192<\/strong><\/a><\/p>\n<\/section>\n<section>\n<h2 id=\"en-faq\">Frequently Asked Questions<\/h2>\n<p><strong>What is the purpose of a DC\u2011DC converter inside a robot joint?<\/strong><br \/>It efficiently steps down the higher DC bus voltage (e.g., 48\u202fV) to a stable low voltage (e.g., 5\u202fV) for the control electronics, while providing galvanic isolation to protect against noise and transients.<\/p>\n<p><strong>Why is 1500\u202fVDC isolation important for a servo drive?<\/strong><br \/>It prevents high\u2011voltage transients from the motor drive PWM switching from damaging the sensitive encoder and microcontroller circuits, ensuring reliable operation.<\/p>\n<p><strong>Can the TPS\u2011HCLS1 series operate in the high temperatures inside a sealed robot joint?<\/strong><br \/>Yes, the series is rated for continuous operation from \u201140\u202f\u00b0C to +105\u202f\u00b0C, making it suitable for the demanding thermal environment of a sealed robot joint.<\/p>\n<p><strong>Where can I find the complete product specifications?<\/strong><br \/>Visit the <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/print-modules-dcdc-module-3\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS DC\u2011DC module category page<\/a> for datasheets and application notes.<\/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>Next step:<\/strong> Design reliable, compact power into your next robotic joint with TPS isolated DC\u2011DC converters. <a style=\"color: #ffffff; font-weight: 600; text-decoration: underline; display: block; margin-top: 10px;\" href=\"https:\/\/www.shop-tps.com\/shop\/category\/print-modules-dcdc-module-3\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Browse TPS DC\u2011DC converters \u2192<\/a><\/p>\n<\/footer><\/article>\n\n<style id=\"wpforms-css-vars-4659-block-b70c974f-22f3-465a-834a-ed102b85beb9\">\n\t\t\t\t#wpforms-4659.wpforms-block-b70c974f-22f3-465a-834a-ed102b85beb9 {\n\t\t\t\t--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 14px;\n--wpforms-field-size-checkbox-size: 16px;\n--wpforms-field-size-sublabel-spacing: 5px;\n--wpforms-field-size-icon-size: 1;\n--wpforms-label-size-font-size: 16px;\n--wpforms-label-size-line-height: 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It also involves extreme compactness, galvanic isolation to protect sensitive encoder and logic circuits from the noisy motor drive bus. The ability to operate reliably in a sealed, high\u2011temperature environment. And the long\u2011term\u2026 <a href=\"https:\/\/tps-elektronik.com\/en\/what-is-tps-dc-dc-converter-for-industrial-robot-joint-servo-drives-and-why-it-is-essential-for-compact-high-efficiency-power\/\">Read More &raquo;<\/a><\/p>\n","protected":false},"author":9,"featured_media":15573,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-15504","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-production"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is TPS DC\u2011DC Converter for Industrial Robot Joint Servo Drives and Why It Is Essential for Compact High Efficiency Power? - TPS<\/title>\n<meta name=\"description\" content=\"TPS DC DC converter deliver compact, high\u2011efficiency isolated power for industrial robot joint servo drives. 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