ICE5QR4770AGXUMA1

AC DC Converters, Offline Switchers Overview

The ICE5QR4770AGXUMA1 is an AC/DC converter from Infineon Technologies, classified as a DP LITE CoolSET integrated power IC. It utilizes Flyback topology and operates with a switching frequency of 20 kHz. The device supports an input voltage range of 10 V to 25.5 V and delivers up to 27 W of output power. Key electrical parameters include a maximum output current of 140 mA and a breakdown voltage of 700 V. It functions within a temperature range of -40°C to +150°C TJ and features a work supply current of 900 uA.

AC DC Converters, Offline Switchers Feature Summary

• Integrated power IC optimized for offline switch power supplies in cascode configuration
• Incorporates Quasi-Resonant (QR) operation for enhanced efficiency
• Includes comprehensive fault protection mechanisms such as overcurrent, overvoltage, and thermal shutdown

AC DC Converters, Offline Switchers Applications

• Offline Switch Mode Power Supplies (SMPS)
• Adapter and Charger Power Supplies
• General Purpose Power Supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix XUMA1 indicates reel packaging when sourcing. Confirm the component status as discontinued or obsolete through official Infineon channels prior to design finalization. Ensure compatibility with PG-DSO-12 surface mount requirements during PCB layout. Cross-reference datasheet revisions to confirm pinout consistency if substituting older variants.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring fixed-frequency QR control with integrated high-voltage MOSFETs. It is suitable for designs prioritizing low standby power consumption due to its 900 uA supply current. Consider the 20 kHz switching frequency for acoustic noise management in sensitive environments. Evaluate the 700V breakdown rating against peak drain voltage stresses in the target flyback transformer design.

AC DC Converters, Offline Switchers Part Context

This part belongs to the CoolSET family of integrated power ICs, combining a CoolMOS transistor with a PWM controller. The QR CoolSET series specifically targets high-efficiency offline converters by leveraging quasi-resonant switching techniques. It represents a solution for reducing external component count and board space in medium-power AC/DC conversion applications.

AC DC Converters, Offline Switchers Replacement Considerations

Infineon recommends the ICE5QR4780BG1XUMA1 as a manufacturer-recommended substitute. Verify functional equivalence and package compatibility before implementation.