External/internal power supply accessories refer to components that enable power delivery, management, and protection for electronic systems. These accessories ensure stable operation, efficiency, and safety in applications ranging from consumer electronics to industrial machinery. Modern technology relies on these accessories to meet energy efficiency standards, reduce downtime, and support complex power architectures.
| Type | Function Features | Application Examples |
|---|---|---|
| External Power Adapters | AC-DC conversion, portability, over-voltage protection | Laptops, medical devices |
| Internal Power Modules | Integrated DC-DC conversion, compact form factor | Servers, networking equipment |
| Power Distribution Boards | Multi-channel output, load balancing | Data centers, industrial automation |
| Battery Backup Systems | Uninterruptible power supply (UPS), energy storage | Emergency lighting, critical infrastructure |
| Power Management ICs | Digital monitoring, dynamic voltage scaling | Smartphones, IoT devices |
Typical components include:
| Parameter | Importance |
|---|---|
| Input Voltage Range (90-264V AC) | Ensures global compatibility |
| Efficiency Rating (80 PLUS Certification) | Reduces energy waste |
| Output Ripple Noise (<30mV) | Protects sensitive electronics |
| Operating Temperature (-40 C to +70 C) | Determines reliability in extreme conditions |
| Safety Certifications (UL/CE/IEC 62368) | Compliance with regulatory standards |
| MTBF (Mean Time Between Failures) >100,000 hours | Measures long-term reliability |
| Manufacturer | Representative Product |
|---|---|
| Delta Electronics | PDT Series Modular Power Supplies |
| Mean Well | UHP-1500-24 High-Power PSU |
| FSP Group | Golden Series PC Power Supplies |
| CUI Inc. | PSK-25Q-12 Power Adapter |
| Vicor Corporation | ChiP Power Modules |
Key considerations:
Case Study: A semiconductor manufacturing plant selected IP67-rated power distribution units with active PFC to reduce harmonic distortion in high-vibration environments.
Emerging trends include:
Market growth driven by EV charging infrastructure and renewable energy integration requirements.