DPA423PN Highly Integrated DC-DC Converter IC

DPA423PN Highly Integrated DC-DC Converter IC

The DPA423PN from Power Integrations is a highly integrated DC-DC converter IC designed for isolated and non-isolated power supply applications. It combines a high-voltage power MOSFET, a precision PWM control circuit, and multiple protection features into a single compact device. This integration reduces external component count, simplifies design, and enhances overall power supply efficiency and reliability.

The DPA423PN is optimized for 48V input DC-DC converters commonly used in telecommunications, networking, and industrial systems, delivering high power density and excellent performance in compact form factors.

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Features

• Integrated 220V power MOSFET and PWM controller
• Wide input voltage range: 36 V to 72 V DC
• Delivers up to 20–25 W output power (typical)
• High efficiency (up to 85%) with reduced heat generation
• Programmable switching frequency up to 400 kHz
• Cycle-by-cycle current limiting for enhanced protection
• Under-voltage and over-voltage lockout (UVLO/OVP)
• Built-in thermal shutdown for safe operation
• Soft-start and frequency jittering for EMI reduction
• Low standby power and excellent transient response
• Compact 8-pin DIP or SMD-compatible package

Applications

• DC-DC converters for telecom and networking systems
• 48V distributed power architectures
• Isolated industrial control power supplies
• Base station and communication power modules
• High-efficiency auxiliary and bias power supplies
• Battery-powered or backup systems

DPA IC Datasheet