The HC2703FD from HCW-HENGCHENGWEI is a high-efficiency 700V AC-DC integrated circuit designed for reliable and compact offline power conversion, featuring built-in input over-voltage protection (OVP) for enhanced system safety. Operating at 105KHz, this advanced IC utilizes high-voltage fast-switching technology to reduce switching losses, improve conversion efficiency, and deliver stable performance in demanding power environments. Its optimized internal architecture minimizes conduction losses, ensuring excellent thermal performance and long-term reliability.
With a robust 700V rating, the HC2703FD provides a significant advantage over lower voltage AC-DC solutions by offering improved surge tolerance and greater operational safety margins. The integrated input OVP function further protects downstream circuits from abnormal voltage spikes, making it ideal for unstable AC mains conditions and industrial-grade applications. The device integrates key control and switching functions, reducing external component count and simplifying overall system design.
Housed in a compact SOP-8 package, the HC2703FD provides flexible PCB layout options and efficient heat dissipation, making it suitable for high-density and space-constrained designs. It is widely used in AC-DC adapters, LED drivers, smart home systems, industrial auxiliary power supplies, and consumer electronics.
Combining high efficiency, built-in protection, and strong high-voltage capability, the HC2703FD is a reliable solution for next-generation power supply designs.
Key Features:
- 700V high-voltage AC-DC integrated circuit
- Built-in input over-voltage protection (OVP)
- 20W output power capability
- High-frequency operation at 105KHz
- Low switching and conduction losses for high efficiency
- Integrated control reduces external components
- Excellent thermal performance and reliability
- SOP-8 package for compact and flexible designs
Applications:
- AC-DC adapters and fast chargers
- LED lighting drivers
- Smart home and IoT power systems
- Industrial auxiliary power supplies
- Consumer electronics power conversion
- Offline switching power supply designs
