ADPS43748-RD Industrial Power Solution

Description

Simplify your isolated power for high-efficiency solar inverters with the ADPS43748-RD Industrial Power Solution. Discover a 20 W high-efficiency optocoupler-free flyback PSU (Power Supply Unit) optimized for solar inverter applications. With a no-optocoupler synchronous flyback architecture and four configurations based on output capacitors, this system-level power solutions is also flexible for different inverter requirements and can be used in various energy infrastructure applications.

Applications

• Solar Inverters
• Energy Storage Systems
• EV Charging Stations
• Industrial Power Supplies
• Renewable Energy Converters
• UPS and Backup Power Systems

. If you are interested in obtaining an evaluation board, please contact Customer Service.

Features & Benefits

• Uses a no‑optocoupler synchronous flyback design for higher reliability and fewer failure points.
• Provides four output‑capacitor configurations for easy design tuning.
• Delivers >90% efficiency under typical load conditions.
• Supports up to 4 A peak, ideal for inverter AUX and control‑rail power.
• Compact isolated form factor that simplifies integration into inverter control boards.
• Lowers BOM cost and design complexity for renewable‑energy systems.
• Integrates seamlessly into a solar inverter’s auxiliary supply, powering DSPs, MCUs, sensors, and gate drivers.

Solution Specifications:

• Input Voltage: 20V to 28V (nominal: 25V)
• Output: 5V, up to 4A
• Topology: Isolated flyback controller with synchronous rectification
• Transformer: Shielded type (Würth Elektronik 750311589)
• Output Ripple: ≤ 250mV p-p (~5% of VOUT)
• Transient Response: Validated at 2A step load
• Key Attributes: Low cost, high performance