DPA425R-TL

Special Purpose Regulators Overview

The DPA425R-TL is a highly integrated DC-DC converter IC from the DPA-Switch family, designed for isolated power conversion. It features a wide input voltage range of 16 V to 75 V DC and delivers up to 70 W of output power. The device integrates a 220 V high-frequency MOSFET with PWM control and protection circuits in a TO-263-7C surface-mount package. It supports programmable switching frequencies of 300 kHz or 400 kHz and includes built-in auto-restart for overload and open-loop protection.

Special Purpose Regulators Feature Summary

• Integrates a 220 V high-frequency MOSFET with complete control and fault protection circuitry into a single monolithic IC.
• Eliminates external current sensing requirements through lossless integrated current limiting.
• Provides robust protection mechanisms including input undervoltage/overvoltage shutdown and automatic restart for output faults.

Special Purpose Regulators Applications

• 24 V/48 V distributed power architecture DC-DC converters
• Power over Ethernet (PoE) powered devices
• Telecommunications central office equipment

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'TL' indicates tape-and-reel packaging when ordering. Confirm the pin-selectable frequency configuration matches the design requirements, as this affects the operating switching speed. Ensure the TO-263-7C thermal pad is properly connected to the PCB ground plane for adequate heat dissipation during operation.

Special Purpose Regulators Selection Notes

Select this component for designs requiring high integration and reduced external component count within the 16-75 V DC input range. It is suitable for applications needing up to 70 W of isolated power conversion. Consider the TO-263-7C package for its thermal efficiency compared to lower-power DIP options. Verify compatibility with synchronous rectification if higher efficiency is required at full load.

Special Purpose Regulators Part Context

This part belongs to the DPA-Switch family, which targets Power over Ethernet and telecom applications. The series is known for eliminating up to 50 external components. The R package variant specifically addresses high-power needs within the family, offering superior thermal performance for designs exceeding the capabilities of standard plastic DIP packages.

Special Purpose Regulators Replacement Considerations

DPA424R-TL offers lower power capability. DPA426R-TL provides higher power capacity. DPA425GN-TL is a surface-mount alternative with different thermal characteristics. Verify pinout and thermal pad configurations before substitution.