HC77045B 700V GaN ACDC IC SOP-8 | High-Efficiency Offline Power Conversion IC | HCW-HENGCHENGWEI

The HC77045B is a high-efficiency Gallium Nitride (GaN) AC-DC integrated circuit from HCW-HENGCHENGWEI, designed for compact, reliable, and energy-efficient offline power conversion systems. Built with advanced GaN semiconductor technology, it provides ultra-fast switching performance with significantly reduced switching and conduction losses compared to traditional silicon-based AC-DC solutions, improving overall system efficiency and thermal behavior.

With a high voltage rating of 700V, the HC77045B is optimized for primary-side switching applications in modern low-power SMPS and adapter designs. Its low-loss architecture ensures minimal heat generation, stable operation, and enhanced long-term reliability even under continuous load conditions.

The device supports high-frequency switching operation, enabling smaller transformer designs, higher power density, and improved energy conversion efficiency. This makes it highly suitable for compact power solutions where efficiency, size reduction, and thermal management are critical design requirements.

Packaged in a standard SOP-8 form factor, the HC77045B offers easy PCB integration and cost-effective manufacturing. Its integrated design reduces external component count, simplifying circuit layout, lowering BOM cost, and improving overall system reliability.

The HC77045B is well-suited for next-generation offline power systems requiring high efficiency, compact size, and stable performance across a wide range of operating conditions.

Key Features:

• GaN-based high-efficiency AC-DC integrated circuit
• High voltage rating: 700V
• Ultra-fast switching performance
• Low switching and conduction losses
• Improved thermal efficiency and reliability
• Compact SOP-8 package design
• High-frequency operation support
• Reduced external component count
• High power density capability

Applications:

• Fast charging adapters
• USB and mobile chargers
• Smart power supplies
• LED driver systems
• Compact SMPS designs
• Consumer electronics power modules
• Low-power offline converters
• Energy-efficient AC-DC adapter solutions