{"product_id":"300w-dc-dc-buck-converter-20a-step-down-module-led-driver","title":"300W DC-DC Buck Converter 20A Step-Down Module | LED Driver","description":"\n\u003ch2\u003e300W DC-DC Buck Converter – 20A Constant Current Step-Down Module\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e300W DC-DC Buck Converter\u003c\/strong\u003e is a high-efficiency, adjustable step-down power module designed for electronics projects, LED driver applications, battery charging, and custom power supply builds. With a broad input voltage range and precision output control, it's an ideal solution for hobbyists, engineers, and makers who need reliable, stable DC power conversion.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Range:\u003c\/strong\u003e Accepts 6V to 40V DC (10V–40V recommended for best performance)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Output:\u003c\/strong\u003e Output voltage adjustable from 1.2V to 36V DC; output current up to 20A (15A suggested for sustained use)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Efficiency:\u003c\/strong\u003e Up to 95–96% efficiency (tested at 24V to 12V, 20A) — minimal energy waste and heat generation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual MOS Tube Design:\u003c\/strong\u003e Built with a 75V\/80A large-current dual MOS tube for robust, stable switching performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Ripple Output:\u003c\/strong\u003e High-frequency, low-resistance electrolytic capacitors on both input and output keep ripple to ≤50mV for clean, stable power\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e30A Screw Terminals:\u003c\/strong\u003e Large-current screw terminals make wiring fast, secure, and convenient\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Heat Sinks:\u003c\/strong\u003e Two integrated heat sinks significantly improve thermal dissipation for extended operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Recovery Short Circuit Protection:\u003c\/strong\u003e Built-in protection automatically recovers — avoid sustained short circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnable Pin (EN):\u003c\/strong\u003e Low voltage level shuts off output; suspension\/high voltage level enables output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstant Voltage \u0026amp; Constant Current Modes:\u003c\/strong\u003e CV and CC adjustment pots allow independent control of output voltage and current\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6V – 40V DC (10V–40V recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.2V – 36V DC (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20A max (15A suggested continuous)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 95% (24V→12V at 20A)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Ripple\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤50mV\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eScrew Terminal (30A rated)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShort Circuit Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-recovery (avoid prolonged short)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 × 53 × 27 mm \/ 2.36 × 2.08 × 1.06 in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTerminal Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVO+\u003c\/strong\u003e – Output positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVO−\u003c\/strong\u003e – Output negative\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e+IN\u003c\/strong\u003e – Input positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e−IN\u003c\/strong\u003e – Input negative\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCV\u003c\/strong\u003e – Output voltage adjustment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCC\u003c\/strong\u003e – Output current adjustment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEN\u003c\/strong\u003e – Enable pin (low = output off; high\/suspend = output on)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWhen there is a large difference between input and output voltage, reduce power and current to avoid overheating.\u003c\/li\u003e\n  \u003cli\u003eDo not sustain a short circuit — self-recovery protection is designed for momentary events only.\u003c\/li\u003e\n  \u003cli\u003eCommon-grounded input\/output: no-load CV provides constant voltage; CC provides constant current.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor more information on electrical safety standards for low-voltage electronic modules, visit the U.S. Consumer Product Safety Commission – Electrical Safety.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/DC-to-DC_converter\" target=\"_blank\" rel=\"noopener\"\u003eDC-to-DC converter\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the maximum continuous output current for this DC-DC buck converter module?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports a maximum output current of 20A, but for sustained, long-term use it is recommended to operate at 15A or below to ensure safe thermal performance and module longevity.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this buck converter be used as an LED driver?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This step-down module features a dedicated constant current (CC) adjustment mode, making it well-suited for driving high-power LED arrays. Simply set the output current to match your LED's rated current using the CC potentiometer.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What input voltage range does this 300W step-down module accept?\u003c\/h4\u003e\n\u003cp\u003eA: The module accepts an input voltage of 6V to 40V DC. For optimal and stable performance, an input range of 10V to 40V DC is recommended.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this module have overload or short circuit protection?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, it includes self-recovery short circuit protection. However, it is not designed for prolonged short circuit conditions — momentary shorts will auto-recover, but extended shorts should be avoided to prevent damage.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the maximum continuous output current for this DC-DC buck converter module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module supports a maximum output current of 20A, but for sustained, long-term use it is recommended to operate at 15A or below to ensure safe thermal performance and module longevity.\"}}, {\"@type\": \"Question\", \"name\": \"Can this buck converter be used as an LED driver?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This step-down module features a dedicated constant current (CC) adjustment mode, making it well-suited for driving high-power LED arrays. 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However, it is not designed for prolonged short circuit conditions — momentary shorts will auto-recover, but extended shorts should be avoided to prevent damage.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Electronics \u0026 Tech\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/collections\/electronics-tech\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"300W DC-DC Buck Converter 20A Step-Down Module | LED Driver\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/products\/300w-dc-dc-buck-converter-20a-step-down-module-led-driver\"}]}\u003c\/script\u003e","brand":"Vue","offers":[{"title":"Black","offer_id":48752693018816,"sku":"14:366103","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/9338\/7968\/files\/Sb4ab8b9536ef48438ff5ce58a35ef536z.webp?v=1786253883","url":"https:\/\/vueselect.com\/products\/300w-dc-dc-buck-converter-20a-step-down-module-led-driver","provider":"Vue","version":"1.0","type":"link"}