DC 36V Step Down to 5V 3A 15W Voltage Converter, AC 12V to 5V Converter

Description

AC to DC Voltage Converter — Engineered for Harsh Conditions and Reliable Power

🛡 Built to Survive Extreme Environments

This DC-DC/AC-DC step-down converter is purpose-built for rugged applications. It’s completely sealed with an IP68 waterproof rating, capable of withstanding submersion in water up to 1.5 meters for half an hour without failure.

Encased in V-0 rated flame-retardant ABS plastic, it resists both heat and cold, operating smoothly from -20°C up to +65°C.

With over 50,000 hours of projected lifespan, this converter uses top-tier automotive components that ensure robust performance in the most demanding conditions.

⚙️ High-Performance Output with Exceptional Efficiency

With power conversion optimized through synchronous rectification, this unit delivers a consistent 5V output with a ±1% tolerance.

Its performance remains stable across a wide input voltage range—10–40V DC or 10–26V AC—making it ideal for solar, automotive, and battery-based power sources.

The device continuously supplies 3A of current and can accommodate short peaks of up to 3.5A, ensuring compatibility with a range of high-drain equipment.

🧯 Built-In Multi-Layered Protection

To prevent damage in critical scenarios, this converter features a triple-layered protection design: it automatically shuts down during overheat, reverse polarity, or short-circuit conditions.
It’s also equipped with a 5A quick-blow fuse and a 600W-rated transient voltage suppression module that shields against power spikes and surges.

Dynamic load sensing helps detect and avoid excessive current draw, keeping both the converter and connected devices safe.

Technical Overview

Precision Engineering at the Core

🚀 Efficient Design from the Inside Out

At its core is a custom-engineered synchronous buck topology powered by the LM25116-Q1 PWM controller, minimizing energy loss during switching cycles.
The converter’s PCB is designed with multiple copper layers (2oz) and embedded thermal pathways, enhancing both power delivery and heat management.
It meets strict automotive standards, having passed industry-specific tests for vibration and ingress (ISO 16750-2 and ISO 20653).

🌡 Thermal Awareness for Continuous Operation

The converter actively monitors internal temperature using NTC thermistors.
When internal heat reaches 75°C, the system auto-regulates current output to maintain stability without triggering shutdown.
It also includes cold-start functionality, allowing reliable startup in extreme cold (as low as -40°C), with an optional preheat feature for specialized deployments.

Certifications & Service Guarantee

• 1500V DC insulation barrier (input-output isolation not included by design)
• Tested to meet UL 60950-1 and EN 55032 Class B standards for EMI emissions
• Comes with a 1-year limited warranty and lifetime access to technical assistance

Installation Instructions

1. Confirm Voltage Input: Ensure input source is within 10–40V DC or 10–26V AC.
2. Prepare Wires: Strip 10mm of insulation from your wiring (use 18–12 AWG cables).
3. Connect Terminals:
   • Input: Connect red to positive input
   • Output: Yellow = 5V output, Black = Ground
4. Seal Connections: Tighten waterproof cable glands for outdoor or marine use
   💡 Pro Tip: Apply dielectric grease at contact points to prevent corrosion in moisture-prone setups.

Common Questions

Q: Can this be used with standard 220V household outlets?

No. This converter requires low-voltage AC or DC input. For 220V mains use, an external step-down transformer is needed.

Q: How do I size the converter for my devices?

Total power should not exceed 15W. Add up each device’s wattage (e.g., 5V × current in amps). Example: 5V/2A + 5V/1A = 15W.

Q: Is the EMI safe for sensitive installations?

Yes. Emissions are well below 30dBµV at 3 meters, compliant with EN55032 Class B — safe for use in vehicles, medical gear, and industrial control systems.

This AC to DC converter is the perfect solution where efficiency, reliability, and ruggedness are non-negotiable. Whether you’re powering mission-critical electronics or working in harsh weather conditions, this converter delivers clean, safe, and stable power every time.