--- product_id: 55058087 title: "5A 75W XL4015 DC-DC Converter Adjustable Step-Down Module 4.0-38V to 1.25V-36V DIY Power Supply Compatible with Arduino Raspberry Pi DIY Etc" brand: "haljia" price: "FREE" currency: GBP in_stock: false reviews_count: 8 url: https://www.desertcart.co.uk/products/55058087-5a-75w-xl4015-dc-dc-converter-adjustable-step-down-module store_origin: GB region: United Kingdom --- # 5A 75W XL4015 DC-DC Converter Adjustable Step-Down Module 4.0-38V to 1.25V-36V DIY Power Supply Compatible with Arduino Raspberry Pi DIY Etc **Brand:** haljia **Price:** FREE **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** 5A 75W XL4015 DC-DC Converter Adjustable Step-Down Module 4.0-38V to 1.25V-36V DIY Power Supply Compatible with Arduino Raspberry Pi DIY Etc by haljia - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/55058087-5a-75w-xl4015-dc-dc-converter-adjustable-step-down-module) ## Best For - haljia enthusiasts ## Why This Product - Trusted haljia brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Great prices on your favourite Home brands, and free delivery on eligible orders. Review: Great value and effective tool - Have used two of them now. One long term and both powering Raspberry pie units. Draw from 1-3A and these have not missed a beat. Did find with both I had to wind the adjuster many times one direction before th voltage started to adjust but only have to do this the first time. Added a small fan when pulling a fairly constant 3A at 5v down from 12v as it warmed up enough I didn’t want to get any fluctuations Review: Nice clear display, easy to install - First, minus one star for the screws and optional heat sink (included) rattling round in the same packaging, would have been easy to damage the circuit in transit. The voltage adjustment micro screw takes a lot of turns to make any difference, but when it did, it worked well. The input/output digital readout is quite accurate and a handy feature. Works well. Nice compact size. Would recommend. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | HALJIA | | Model Number | 1 | | Package Dimensions | 11.4 x 6.8 x 1.6 cm; 20 g | | Item Weight | 20 g | ## Images ![5A 75W XL4015 DC-DC Converter Adjustable Step-Down Module 4.0-38V to 1.25V-36V DIY Power Supply Compatible with Arduino Raspberry Pi DIY Etc - Image 1](https://m.media-amazon.com/images/I/71v3YeNaI3L.jpg) ## Questions & Answers **Q: Is this ok for 7.5v to 5v?** A: Yes. That's a step-down module 4.0-38V to 1.25V-36V. **Q: Is this just a voltage regulator or a power converter** A: This isn’t a voltage regulator, that costs a lot more. **Q: Hey, could i technically use this to change a 24v to 12v? Because I`m switching out the stock fan for a 3d printer to make it quieter.** A: According to its specification it is capable of stepping down the voltage from 24v to 12v There is adjustment available so it could be monitored with a separate multimeter as you set it up. **Q: Hi, how do you configre the module? It is only outputting the same as the input, i cant get it to reduce?** A: From the description above... "When you turn the potentiometer and there is no reaction, you may have to turn the potentiometer many turns." No kidding, I had to turn the pot. about 10 full turns counterclockwise before it did anything. Also, see https://youtu.be/Girj7DJ1SL8 to calibrate it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value and effective tool *by L***. on 24 March 2020* Have used two of them now. One long term and both powering Raspberry pie units. Draw from 1-3A and these have not missed a beat. Did find with both I had to wind the adjuster many times one direction before th voltage started to adjust but only have to do this the first time. Added a small fan when pulling a fairly constant 3A at 5v down from 12v as it warmed up enough I didn’t want to get any fluctuations ### ⭐⭐⭐⭐ Nice clear display, easy to install *by G***R on 30 July 2019* First, minus one star for the screws and optional heat sink (included) rattling round in the same packaging, would have been easy to damage the circuit in transit. The voltage adjustment micro screw takes a lot of turns to make any difference, but when it did, it worked well. The input/output digital readout is quite accurate and a handy feature. Works well. Nice compact size. Would recommend. ### ⭐⭐⭐⭐⭐ Cheap and accurate *by J***H on 14 February 2020* Perfect for the price. Accurate enough and maintains output very well. Heats ink and standoffs are loose in with the board which isn't ideal, but no damage was caused and for the price it's a bargain. Recommended. --- ## 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.co.uk/products/55058087-5a-75w-xl4015-dc-dc-converter-adjustable-step-down-module](https://www.desertcart.co.uk/products/55058087-5a-75w-xl4015-dc-dc-converter-adjustable-step-down-module) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*