A Switch-Mode Power Supply (SMPS) convert domestic AC mains voltage (110V/220V) into regulated 12V DC or 24V DC low-voltage direct current required to power LED strip lights and industrial automation equipment.
Core Technical Specifications
1. Input Specifications
- AC Input Range: 100V – 240V AC (Universal) or 180V – 264V AC (Standard Single Phase).
- Input Frequency: 50Hz / 60Hz.
- Efficiency: 80% to 92% (higher efficiency reduces standby heat generation).
- Power Factor (PFC): PF > 0.90 to 0.95 (active PFC standard in architectural units).
2. Output Specifications: 12V DC vs. 24V DC
| Specification Parameter | 12V DC SMPS | 24V DC SMPS |
| Output Voltage Accuracy | DC 12V (±2% to ±5%) | DC 24V (±2% to ±5%) |
| Current Ratings (Amps) | 2A, 5A, 10A, 16.6A, 25A, 30A, 33A | 1.25A, 2.5A, 4.16A, 6.25A, 8.3A, 10.2A, 12.5A,16.3A |
| Voltage Adjustment Range | Adjustable from 10.8V to 13.2V | Adjustable from 21.6V to 26.4V |
| Max Single-Run LED Length | 5 Meters (beyond 5m incurs voltage drop) | 10 to 15 Meters (lower current = less voltage drop) |
| Wiring Wire Gauge (AWG) | Requires thicker wire for high amperage | Can use thinner gauge wire for long runs |
3. Power Output & Sizing Ratings
SMPS units are rated in Watts (W = Volts × Amps):
- 60W: 12V / 5A OR 24V / 2.5A
- 100W: 12V / 8.3A OR 24V / 4.16A
- 150W: 12V / 12.5A OR 24V / 6.25A
- 200W: 12V / 16.6A OR 24V / 8.3A
- 300W: 12V / 25A OR 24V / 12.5A
- 400W: 12V / 33A OR 24V / 16.3A
4. Built-in Safety Protections
- Short-Circuit Protection: Auto-recovery or hiccup mode upon fault removal.
- Overload Protection: Shuts down or limits power when load exceeds 110%–150% of rated capacity.
- Over-Voltage & Over-Temperature Protection: Thermal shutdown to prevent component failure.
5. Form Factors & Enclosures
- Slim Metallic Honeycomb: Perforated aluminum chassis with natural air convection (indoor use, dry locations).
- Ultra-Slim Profile Drivers: Designed to fit inside narrow false ceiling coves or behind profile tracks.
- Rainproof / Waterproof (IP67): Sealed aluminum casing (e.g., Mean Well LPV/ELG series) for outdoor signage or wet locations.
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