{"product_id":"dc-dc-adjustable-step-down-buck-power-supply-module-800w-1500w","title":"DC-DC Adjustable Buck Power Supply Module 800W–1500W","description":"\n\u003ch2\u003eGaqqee DC-DC Adjustable Step-Down (Buck) Power Supply Module\u003c\/h2\u003e\n\u003cp\u003eTake full control of your power conversion needs with the \u003cstrong\u003eGaqqee DC-DC Adjustable Step-Down Power Supply Module\u003c\/strong\u003e. Available in \u003cstrong\u003e800W, 1200W, and 1500W\u003c\/strong\u003e configurations, this non-isolated buck regulator accepts a wide DC input range of \u003cstrong\u003e15V–90V\u003c\/strong\u003e and delivers a fully adjustable output of \u003cstrong\u003e2.5V–72V\u003c\/strong\u003e — making it an ideal solution for industrial equipment, power tools, battery charging systems, laboratory power supplies, and more.\u003c\/p\u003e\n\n\u003cp\u003eWith up to \u003cstrong\u003e97% conversion efficiency\u003c\/strong\u003e, a temperature-controlled air-cooled fan, and continuously adjustable constant-current output, this module is built for demanding, high-reliability applications. Made in China.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Voltage Range:\u003c\/strong\u003e DC 15V–90V input supports a broad range of power supply systems, maximising versatility and compatibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Output Voltage:\u003c\/strong\u003e DC 2.5V–72V output (max output = input voltage × 0.8), continuously adjustable via the onboard CV potentiometer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Power Options:\u003c\/strong\u003e Choose from 800W (28A), 1200W (50A), or 1500W (50A) variants to suit your exact application requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstant-Current Output:\u003c\/strong\u003e Maintains stable output current — 1.5–28A (800W) or 2–50A (1200W\/1500W) — ideal for constant-current applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Conversion Efficiency:\u003c\/strong\u003e Up to 97% efficiency minimises energy loss and heat generation, improving overall system performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir-Cooled with Smart Fan:\u003c\/strong\u003e Temperature-controlled fan activates at approximately 45°C, ensuring reliable thermal management in demanding environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality Components:\u003c\/strong\u003e Rigorously tested electronic components ensure long-term stable operation in industrial environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e80 kHz Operating Frequency:\u003c\/strong\u003e Delivers low ripple and stable output for sensitive electronics and precision equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eProduct Specifications — 800W \u0026amp; 1200W Modules\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-isolated buck (step-down) regulator\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 15–90V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 2.5–72V (max = input × 0.8)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e800W \/ 1200W (well-ventilated environment required)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Rated Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e700W \/ 1000W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28A (800W) \/ 50A (1200W)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Rated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25A \/ 40A\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\u003eYes (constant current protection)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConversion Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 97%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10°C to +65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCooling Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir-cooled (fan activates at ~45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Reverse Polarity Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone — reverse polarity strictly prohibited\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eProduct Specifications — 1200W \u0026amp; 1500W Modules\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-isolated buck (BUCK) regulator\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 15–90V (10–15V supported via short-circuit terminals)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 2.5–72V (max = input × 0.8)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1200W \/ 1500W (well-ventilated, output ≥50V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Rated Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000W \/ 1200W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30A (1200W) \/ 50A (1500W)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Rated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25A \/ 45A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput ON\/OFF Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes (user-wired)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConversion Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 97%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10°C to +65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCooling Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir-cooled (fan activates at ~45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Reverse Polarity Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone — reverse polarity strictly prohibited\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eHow to Adjust Voltage \u0026amp; Current\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Adjustment:\u003c\/strong\u003e Use a flat-bladed screwdriver to turn the blue \u003cem\u003eCV\u003c\/em\u003e potentiometer. Clockwise increases output voltage; anticlockwise decreases it. Note: maximum output voltage is approximately 20% lower than the input voltage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Adjustment:\u003c\/strong\u003e Set a multimeter to the 50A, 20A, or 10A range. Set supply voltage to 5V. Turn the \u003cem\u003eCC\u003c\/em\u003e potentiometer anticlockwise ~10 turns to set current to minimum, then short-circuit the output terminals. Gradually turn \u003cem\u003eCC\u003c\/em\u003e clockwise to dial in the required current value. (If output voltage disappears after turning CC fully anticlockwise, this is normal — current has been set to 0A; turn clockwise to restore output.)\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eImportant Safety Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e⚠️ \u003cstrong\u003eNo reverse polarity protection\u003c\/strong\u003e — incorrect polarity will damage the module.\u003c\/li\u003e\n  \u003cli\u003e⚠️ \u003cstrong\u003eNo over-voltage protection\u003c\/strong\u003e — do not exceed 90V input.\u003c\/li\u003e\n  \u003cli\u003e⚠️ \u003cstrong\u003eOutput back-feed protection is absent\u003c\/strong\u003e — when charging batteries or connecting inductive loads (e.g. motors), a back-feed protection diode must be installed externally.\u003c\/li\u003e\n  \u003cli\u003e✅ Ensure adequate ventilation during operation to maintain rated performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStep-down power supply module × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-ceramic-trimming-tool-curved-skip-knife\"\u003eStainless Steel Ceramic Trimming Tool – Curved Skip Knife\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/airtight-transparent-pet-storage-bottle-craft-beads-home-organization\"\u003eAirtight Transparent PET Storage Bottle | Beads \u0026amp; Crafts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the input voltage range for the DC-DC step-down power supply module?\u003c\/h4\u003e\n\u003cp\u003eA: The module accepts a DC input voltage of 15V to 90V. Some variants also support 10–15V input by short-circuiting the designated terminals on the board. Never exceed 90V input, as there is no over-voltage protection built in.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I calculate the maximum output voltage for a given input voltage?\u003c\/h4\u003e\n\u003cp\u003eA: The maximum output voltage is approximately 80% of the input voltage (input voltage × 0.8). For example, a 40V input yields a maximum output of 32V, and a 90V input yields a maximum output of 72V. The output can be adjusted down to a minimum of 2.5V using the onboard CV potentiometer.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which power variant should I choose — 800W, 1200W, or 1500W?\u003c\/h4\u003e\n\u003cp\u003eA: Choose based on your application's power demands. The 800W module supports up to 28A output current and suits moderate industrial or power tool applications. The 1200W module supports up to 50A and is ideal for higher-load systems. The 1500W variant provides maximum headroom for high-power equipment such as battery chargers and industrial machinery operating at 50V or above.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this module require external cooling?\u003c\/h4\u003e\n\u003cp\u003eA: The module is air-cooled with a built-in temperature-controlled fan that activates automatically at approximately 45°C. For continuous rated operation, ensure the module is installed in a well-ventilated environment to sustain full power output without thermal throttling.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is reverse polarity protection included?\u003c\/h4\u003e\n\u003cp\u003eA: No. This module does not include input reverse polarity protection. Connecting the input terminals with incorrect polarity will cause permanent damage. Always verify polarity before connecting power. Similarly, there is no input over-voltage protection, so exceeding 90V input is strictly prohibited.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the input voltage range for the DC-DC step-down power supply module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module accepts a DC input voltage of 15V to 90V. Some variants also support 10–15V input by short-circuiting the designated terminals on the board. Never exceed 90V input, as there is no over-voltage protection built in.\"}}, {\"@type\": \"Question\", \"name\": \"How do I calculate the maximum output voltage for a given input voltage?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The maximum output voltage is approximately 80% of the input voltage (input voltage × 0.8). For example, a 40V input yields a maximum output of 32V, and a 90V input yields a maximum output of 72V. The output can be adjusted down to a minimum of 2.5V using the onboard CV potentiometer.\"}}, {\"@type\": \"Question\", \"name\": \"Which power variant should I choose — 800W, 1200W, or 1500W?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose based on your application's power demands. The 800W module supports up to 28A output current and suits moderate industrial or power tool applications. The 1200W module supports up to 50A and is ideal for higher-load systems. The 1500W variant provides maximum headroom for high-power equipment such as battery chargers and industrial machinery operating at 50V or above.\"}}, {\"@type\": \"Question\", \"name\": \"Does this module require external cooling?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module is air-cooled with a built-in temperature-controlled fan that activates automatically at approximately 45°C. For continuous rated operation, ensure the module is installed in a well-ventilated environment to sustain full power output without thermal throttling.\"}}, {\"@type\": \"Question\", \"name\": \"Is reverse polarity protection included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This module does not include input reverse polarity protection. Connecting the input terminals with incorrect polarity will cause permanent damage. Always verify polarity before connecting power. Similarly, there is no input over-voltage protection, so exceeding 90V input is strictly prohibited.\"}}]}\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:\/\/gf1krb-by.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"DC-DC Adjustable Buck Power Supply Module 800W–1500W\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/products\/dc-dc-adjustable-step-down-buck-power-supply-module-800w-1500w\"}]}\u003c\/script\u003e","brand":"NIFTY","offers":[{"title":"800W 28A","offer_id":67882433806560,"sku":"14:1202#800W 28A","price":81.96,"currency_code":"USD","in_stock":true},{"title":"1200W 50A","offer_id":67882433839328,"sku":"14:350852#1200W 50A","price":101.33,"currency_code":"USD","in_stock":true},{"title":"1200W 30A","offer_id":67882433872096,"sku":"14:351074#1200W 30A","price":77.4,"currency_code":"USD","in_stock":true},{"title":"1500W 50A","offer_id":67882433904864,"sku":"14:4044226#1500W 50A","price":98.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/5384\/6496\/files\/S65412eb03220412eb5d0a600f2beb33dP.webp?v=1791772871","url":"https:\/\/niftyshopmart.com\/products\/dc-dc-adjustable-step-down-buck-power-supply-module-800w-1500w","provider":"NIFTY","version":"1.0","type":"link"}