From Makers Electronics's description

XL4015 Adjustable DC- DC Step-Down Module 5A The XL4015 is a fixed frequency PWM buck (step-down) DC/DC converter operating at 180 KHz. It can efficiently drive a 5A load while maintaining low ripple and excellent line and load regulation. Designed for simplicity, it requires a minimal number of external components and includes internal frequency compensation along with a fixed-frequency oscillator. The PWM control circuit adjusts the duty ratio linearly from 0% to 100%. It features built-in overcurrent protection, which reduces the operating frequency from 180 KHz to 48 KHz in the event of a short circuit. Additionally, an internal compensation block is incorporated to minimize the need for external components. Features: High efficiency up to 96%. The built-in thermal shutdown function. Built-in current limit function. In-Built output short protection function. Input reverse polarity protection. Specification: Module properties: non-isolated step-down module ( BUCK ) Rectification: non-synchronous rectifier Input voltage: 4V ~ 38V DC Output voltage: DC 1.25V ~ 32V ( adjustable ) Output current: 0A ~ 5A Output power: 75W ( more than 50W please add heat sink ) Operating Frequency: 180KHz Operating Temperature: -40°C ~ +85°C Load regulation: S(I)≤0.8% Voltage regulation: S(u)≤0.8% Pin Configuration: Pin Name Description IN+ Positive input (Unregulated or Regulated) IN- Negative input (Ground) OUT+ Positive Output (Regulated) OUT- Negative Output (Ground) Applications: DIY Electronics Projects. LED Drivers. Power Supply for Electronics. Package Includes: 1 x XL4015 Adjustable DC-DC Step-Down Module. Helpful Resources XL4015 Datasheet

From Ampere Electronics's description

XL4015 DC-DC Step Down Module with Voltmeter 5A The XL4015 power module is a DC to DC step-down (BUCK) power module that operates at a switching frequency of 180kHz. In such high frequency, it provides smaller sized filter components compared with low frequency switching regulators. This DC-DC switching buck converter is capable of driving a 5A load with excellent line and load regulation. The main switching component is XL4015, an adjustable output version switching regulator. It is an efficient switching regulator and the output efficiency is significantly higher in comparison with the popular boost regulators. At higher input voltages, the regulator operates at a switching frequency of 180kHz, thus allowing the overall board size to be smaller and space-saving. It is a high-power switching module with a toroidal ring inductor. Specifications: Input voltage: 4 – 38V Output voltage: 1.25 – 36V (adjustable) Output current: Maximum output current 5A Note: The higher the voltage, the load current increases. Try to use it within 4.5A. Output power: It is recommended to use within 75W Note: Heat sink required if output power exceeds 50W Efficiency of this regulator up to 96% Note: Efficiency is related to input, output voltage, current, and the voltage difference Load regulation: 0.8% Voltage regulation: 0.8% Adjustable potentiometer onboard for output voltage adjustment. Power LED indicator Thermal Protection enabled. Short circuit proportion: limited to 8A. Dimension: 54*23*18 mm (L*W*H) Pinout: Pin Name Description IN+ Positive input (Unregulated or Regulated) IN- Negative input (Ground) OUT+ Positive Output (Regulated) OUT- Negative Output (Ground) Package Includes: 1x Step Down Module Documents: Datasheet Relate Products: Arduino | Shields

From Micro Ohm's description

XL4015 Step-Down Converter 5A (Buck) with USB & Digital Voltmeter XL4015 step-down converter 5A module that takes 4–38V DC in and delivers a clean, adjustable 1.25–36V DC out (up to ~75W with heatsinking). It integrates a 3‑digit LED voltmeter and a USB‑A port tied to the output rail for easy 5V powering/charging when the output is set to 5.00V. Perfect for bench supplies, battery systems, LED drivers, and embedded builds. Highlights 4–38VDC input → 1.25–36VDC adjustable output (buck). Up to 5A peak / ~4–4.5A practical continuous (with heatsink & airflow). High efficiency (up to ~96%) and low ripple for stable loads. Onboard 3‑digit LED voltmeter; push‑button to view IN/OUT. USB‑A port wired to module output (set 5.00V before powering USB devices). Potentiometers for V‑ADJ (output voltage) and I‑LIMIT (current limit on CC/CV variants*). Protections: current limit, thermal shutdown, short‑circuit (IC‑level).* Compact board with four mounting holes—drop‑in for DIY power rails. *Notes: Some batches are CV‑only (voltage regulation) while others are CC/CV (voltage & current). What’s Included 1× XL4015 step‑down converter 5A module with digital voltmeter & USB‑A. 1× Small stick‑on heatsink (included in many batches; if absent, add your own).* Typical Applications Bench power supply (settable 1.25–36V, e.g., 12V→5V@3A, 24V→12V@4A). Battery systems & chargers (lead‑acid, Li‑ion packs – with CC/CV batch). LED strips, fans, and embedded controllers (Arduino, ESP, PLC I/O). Car/RV/solar step‑down rails; industrial controls; lab prototyping. Specifications Parameter Value Controller IC XL4015 (fixed‑frequency PWM buck) Input Voltage 4–38VDC (recommended ≥2V above set output) Output Voltage 1.25–36VDC adjustable Output Current 0–5A (peak); ~4–4.5A continuous with adequate cooling Output Power Up to 75W (requires heatsink & ventilation) Efficiency Up to 96% (typical scenario‑dependent) Switching Frequency ~180 kHz Protections Over‑current (limit), thermal shutdown, short‑circuit (IC) Display 3‑digit 7‑segment LED voltmeter (IN/OUT selectable) USB Port USB‑A tied to output rail (5V when output set to 5V) Regulation Line/Load ≈ ±0.8% (typical) Operating Temp. −40 to +85 °C (derate above 60 °C) Board Size* ~62 × 38 × 14 mm (L×W×H) typical for USB+meter variant Mounting 4× M2.5/M3 holes Pinout & Controls (image) IN+ / IN−: DC input from battery/adapter. OUT+ / OUT−: Regulated DC output. USB‑A: Mirrors OUT (use 5.00V for USB gadgets). V‑ADJ : Output voltage trimmer (clockwise → ↑V). I‑LIMIT : Current‑limit trimmer on CC/CV versions (clockwise → ↑I). BTN : Short‑press toggles voltmeter IN/OUT display (if equipped). Dimensions & Mounting (image) (Image placeholder — add to gallery) Typical PCB outline ~70×40 mm with corner mounting holes. Allow extra height for inductor & capacitors; keep airflow around heatsink. Usage Notes & Safety Non‑isolated buck: input and output share ground—avoid ground loops. Keep VIN ≥ VOUT + ~2V for stable regulation. For >50W loads, attach the heatsink and ensure airflow; consider bolting to a metal plate. Add an input fuse and TVS or MOV if used on automotive lines. When using USB‑A , set output to exactly 5.00V before connecting devices. For battery charging: only use CC/CV batches and set correct limits. Quality & Testing Each unit is visually inspected and function‑tested (no‑load and 5V/12V load check). Ripple/thermals depend on load profile; for critical builds, validate on your bench. Shipping & Handling Packed in antistatic bag with padding. We recommend storing modules in dry conditions and avoiding mechanical stress on the inductor and trimmers. Batch Variations Notice CV‑only vs CC/CV: Some lots include current‑limit functionality (LM358 op‑amp on board), others are voltage‑only. We stock CV by default unless “CC/CV” is explicitly stated on the label. Voltmeter & buttons: 3‑digit vs 4‑digit display; 1–2 buttons for IN/OUT toggle. Heatsink: May or may not be pre‑installed. Layout: Small differences in silkscreen (e.g., HW‑316 vs HW‑064). If a specific variant is required, please confirm with our team before ordering. Datasheet Datasheet : XL4015 datasheet (PDF) Info Brand: Generic Model: XL4015‑USB‑VM‑5A (typical) Family / Category: DC‑DC Converters → Buck (Step‑Down) Lifecycle: Active commodity module LSI & Synonyms: XL4015 buck; XL4015 5A module; DC‑DC step‑down; adjustable regulator; CC/CV charger; USB buck converter; 4–38V to 1.25–36V; 75W power module; 180 kHz switcher; non‑isolated converter; LED driver; battery charger module; LM2596 alternative. Arabic LSI: محول خافض XL4015؛ منظم جهد DC‑DC؛ وحدة خافض 5 أمبير؛ من 4–38 فولت إلى 1.25–36 فولت؛ مُقياس جهد رقمي؛ محول باك؛ شاحن CC/CV. محول خافض XL4015 بتيار 5A مع USB ومقياس جهد رقمي تقدم لك هذه الوحدة XL4015 step-down converter 5A لتحويل الجهد من 4–38 فولت تيار مستمر إلى خرج قابل للضبط بين 1.25–36 فولت بقدرة تصل إلى ~75 واط (مع تبريد مناسب). تأتي بلوحة عرض LED ثلاثية الأرقام ومُنفذ USB‑A متصل بخط الخرج لتغذية/شحن أجهزة 5V عند ضبط الخرج على 5.00 فولت. مثالية للتجارب المخبرية، أنظمة البطاريات، إضاءة LED، والمشاريع المدمجة. المزايا دخل 4–38 فولت → خرج 1.25–36 فولت (خافض باك). حتى 5 أمبير لحظي / ~4–4.5 أمبير عملياً (مع تبريد). كفاءة عالية (حتى ~96%) وتموّج منخفض. مقياس جهد LED ثلاثي الأرقام مع زر تبديل للعرض (دخل/خرج). منفذ USB‑A متصل بخط الخرج — اضبط 5.00 فولت قبل توصيل أجهزة USB. مُبدّلات ضبط الجهد V‑ADJ وحد التيار I‑LIMIT (في نسخ CC/CV). حمايات على مستوى المتحكم: تحديد تيار، إيقاف حراري، قصر. محتويات العبوة 1× وحدة XL4015 بخافض 5A مع مقياس جهد رقمي وUSB‑A. 1× مُشتت حراري صغير لاصق*. * قد تختلف المحتويات حسب الدُفعة. الاستخدامات الشائعة مزودات مختبرية، شحن بطاريات (مع نسخ CC/CV فقط)، تشغيل شرائط LED ومراوح وأنظمة مدمجة، خطوط 5V في السيارات/الطاقة الشمسية، النمذجة السريعة. المواصفات المتحكم: XL4015 (PWM ~180 كيلوهرتز). الدخل: 4–38VDC. الخرج: 1.25–36VDC قابل للضبط. التيار: حتى 5A (عملياً ~4–4.5A مع تبريد). القدرة: حتى 75W (بحاجة لتبريد جيد). الكفاءة: حتى ~96%. العرض: LED ثلاثي الأرقام (تبديل دخل/خرج). USB‑A: مرتبط بمخرجات اللوحة (5V عند ضبط الخرج على 5V). الأبعاد التقريبية: 62×38×14 مم. الأطراف وعناصر التحكم (صورة) الأبعاد والتثبيت (صورة) ملاحظات الاستخدام والسلامة وحدة غير معزولة: يشترك الدخل والخرج في الأرضي. حافظ على VIN ≥ VOUT + ~2V للاستقرار. فوق 50 واط: استخدم مُشتتًا حراريًا وتهوية كافية. أضف فيوز على الدخل ووسائل حماية مناسبة لخطوط السيارات. استخدم نسخ CC/CV فقط لشحن البطاريات مع ضبط الحدود بدقة. الجودة والاختبارات فحص بصري واختبار أساسي (لا حمل و5V/12V تحت الحمل). يُنصح بالتحقق الحراري والتموّج حسب تطبيقك. الشحن والمناولة تعبئة مضادة للكهرباء الساكنة مع حماية مناسبة. يُفضّل التخزين الجاف وتفادي الضغط على المحث والبوテンشيومتر. اختلافات الدُفعات اختلاف في وجود حد التيار (CC/CV) أو مقياس الجهد والأزرار أو المُشتت، واختلافات طفيفة في تخطيط اللوحة والحرير. روابط مفيدة ورقة بيانات XL4015 (PDF)