--- product_id: 128786338 title: "KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W)" brand: "knacro" price: "1163680₫" currency: VND in_stock: true url: https://www.desertcart.vn/products/128786338-knacro-dc-dc-buck-converter-12v-24v-8-40v-to store_origin: VN region: Vietnam --- # KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W) **Brand:** knacro **Price:** 1163680₫ **Availability:** ✅ In Stock ## Quick Answers - **What is this?** KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W) by knacro - **How much does it cost?** 1163680₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/128786338-knacro-dc-dc-buck-converter-12v-24v-8-40v-to) ## Best For - knacro enthusiasts ## Why This Product - Trusted knacro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Size:5V 20A 100W Adopts synchronous rectification technology; high transfer efficiency of 95 percent; small heating generation Full-potting, waterproof, anti-shock, waterproof, moisture-proof and dust-proof Small size of 74x74x32mm; Weight: 260g; tiny in size and light in weight With overcurrent and short-circuit protection, therefore safe to use Input voltage: 12V 24V (8V-40V, long-term operating voltage: 11v-30v) Output voltage: 5V Output Current: 20A Output Power: 100W Conversion efficiency: >93% Soft start time: about 500mS Output ripple: 30mV(Max) 20M Bandwidth Operate temperature(industrial): -40 to +85 Celsius(please enhance cooling or use lower power) Waterproof rating:IP68 Temperature rise in full load: 50 Celsius Adjust ratio in load: +/— 1% Volt adjust ratio: +/- 2% Dynamic response speed: 5% 200uS Module Properties: non-isolated buck module (BUCK) SIZE:74*74*32MM/2.91*2.91*1.26 inch; Weight: 260g/0.57l;Rectification: synchronous rectification Input reverse connection protection: no(please connect diode in series to the input if you need input reverse-connection protection) Applications: Bus, CMB, large trucks, motor, solar generate electricity, display screen of bus and taxi, car audio device, LCD TV, LED, interphone, monitoring system, etc. Note: 1.Please add fuse in the input; and positive and negative pole of voltage should not be connected reversely, or power module would burn 2.To ensure the module outputs enough voltage and power, please make sure enough voltage and power of input power supply 3.We suggest you to leave current margin for longer usage life; and if your output current reaches the Max, you must enhance cooling Package Includes: 1x DC/DC Converter ## Features - Input range: DC 12V 24V (8V-40V),Output voltage:5V 20A 100W.High efficiency:>93%.Reliable, low heat dissipation ; - With overload / over-current / over / low voltage protection, stable performance. - Light compact, convenient to use and transport; Auto recovery - All epoxy sealed containers with Waterproof Housing; Used in vehicles, security systems, telecommunications, medical equipments, instruments etc - Widely used in Car device, such as LED Display, Hard Disk Player, MP3, DVD, GPS, etc, ## Images ![KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W) - Image 1](https://images-na.ssl-images-amazon.com/images/I/71ToQy-3kbL.jpg) ![KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W) - Image 2](https://images-na.ssl-images-amazon.com/images/I/71WLbDHtbyL.jpg) ![KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W) - Image 3](https://images-na.ssl-images-amazon.com/images/I/81D6IFDVlKL.jpg) ![KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W) - Image 4](https://images-na.ssl-images-amazon.com/images/I/81%2B0pJfaRWL.jpg) ![KNACRO DC-DC Buck Converter 12V 24V (8-40V) to 5V 20A 100W Step-Down Voltage Transformer Volt Regulator Power Supply Inverter Module Waterproof (5V 20A 100W) - Image 5](https://images-na.ssl-images-amazon.com/images/I/41pJwkCbgGL.jpg) ## Available Options This product comes in different **Size** options. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/128786338-knacro-dc-dc-buck-converter-12v-24v-8-40v-to](https://www.desertcart.vn/products/128786338-knacro-dc-dc-buck-converter-12v-24v-8-40v-to) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-04-23*