IRIS4011

Special Purpose Regulators Overview

The IRIS4011 is an integrated switcher combining a dual-mode voltage and current controller with a 650V MOSFET in a single package. Designed for universal and single-input AC/DC and DC/DC switching power supplies, it supports powers up to 60W. The device features primary current mode control and secondary voltage mode control, operating in quasi-resonant or Pulse Ratio Control (PRC) modes for variable frequency operation. It includes Vcc over-voltage protection, over-current protection, and over-temperature protection.

Special Purpose Regulators Feature Summary

• Integrates a 650V MOSFET with a dual-mode controller in a single package
• Supports quasi-resonant and Pulse Ratio Control (PRC) modes for variable frequency operation
• Includes comprehensive protection mechanisms such as Vcc over-voltage, over-current, and over-temperature protection

Special Purpose Regulators Applications

• Universal input AC/DC switching power supplies
• Single input DC/DC switching power supplies
• Power supplies up to 60W capacity

Special Purpose Regulators Procurement Notes

Verify the specific suffix (e.g., K) against the datasheet to confirm pinout and packaging details, as variations may exist within the product line. Ensure compatibility with the intended thermal management solution, given the TO-220 and TO-262 package options. Confirm that the integrated avalanche energy characteristics meet the requirements of the target application environment.

Special Purpose Regulators Selection Notes

Select this component for applications requiring high integration in low-to-medium power AC/DC or DC/DC converters. The choice depends on the need for variable frequency operation via PRC or quasi-resonant modes to optimize efficiency. Consider the 650V breakdown voltage and 3.9Ω Rds(on) max for appropriate power handling and conduction loss calculations.

Special Purpose Regulators Part Context

The IRIS4011 belongs to the IRIS series of integrated switchers from International Rectifier, now part of Infineon Technologies. This series consolidates control logic and power switching into a compact form factor, simplifying design for consumer electronics and adapter applications where space and component count are critical constraints.

Special Purpose Regulators Replacement Considerations

Check for direct replacements like IRIS4013 or IRIS4015 if different power ratings or control modes are required. Verify pin compatibility and electrical parameters before substitution.