DPA426R

Special Purpose Regulators Overview

The DPA426R is a highly integrated isolated DC-DC converter IC from the DPA-Switch family, designed for high-power applications up to 100 W. It features a wide input voltage range of 16 V to 75 V DC and provides a single fixed output channel at 16 V with a maximum current of 5.4 mA. The device utilizes a TO-263-7C surface-mount package, supporting operation temperatures from -40 °C to +150 °C. It integrates a 220 V high-frequency MOSFET with voltage-mode control, offering pin-selectable switching frequencies of 300 kHz or 400 kHz.

Special Purpose Regulators Feature Summary

• Integrates a 220 V high-frequency power MOSFET with complete PWM control and protection circuitry on a single chip.
• Provides superior performance through voltage-mode control that allows high duty cycles while maintaining significant loop bandwidth.
• Includes built-in auto-restart protection against output overload and open-loop conditions without external sensing components.
• Features line undervoltage detection capabilities compliant with ETSI standards for robust telecom and industrial reliability.

Special Purpose Regulators Applications

• 24 V and 48 V distributed power structures
• DC-DC converter modules (bricks)
• Power over Ethernet (PoE) powered devices
• Servers, routers, and network interface cards

Special Purpose Regulators Procurement Notes

Verify component authenticity by checking manufacturer markings and datasheet specifications against official Power Integrations documentation. Confirm package type matches the TO-263-7C form factor and validate electrical parameters such as input voltage range and output characteristics. Ensure compliance with relevant safety and environmental standards required for your specific design implementation.

Special Purpose Regulators Selection Notes

Select this component for designs requiring high power density and simplified bill of materials due to its high integration level. Consider the TO-263-7C package for thermal efficiency in high-power scenarios compared to lower power DIP options. Evaluate the need for pin-selectable frequency settings to optimize magnetic component size and system noise profiles within the specified operating temperature range.

Special Purpose Regulators Part Context

The DPA426R belongs to the DPA-Switch family, which eliminates up to 50 external components to save space and cost. This series offers both surface mount and through-hole options, with the R package specifically optimized for thermally efficient high-power applications. The family is designed to meet stringent requirements for telecom and industrial markets.

Special Purpose Regulators Replacement Considerations

Compatible substitutes within the same family include DPA425R for 70 W applications and DPA423R for lower power requirements. Verify pin compatibility and thermal performance when transitioning between different power ratings within the DPA-Switch lineup.