STR-X6757N

AC DC Converters, Offline Switchers Overview

The STR-X6757N is a power integrated circuit designed for quasi-resonant type switching power supplies. It integrates a high-voltage power MOSFET with a dedicated controller IC to facilitate efficient offline flyback topology operation. The device operates within a switching frequency range of 19kHz to 25kHz and features a breakdown voltage of 500V. A startup voltage threshold of 18.2V ensures reliable activation. This integration simplifies design while maintaining robust performance in switch-mode power supply applications.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a power MOSFET and controller IC into a single package
• Utilizes quasi-resonant topology for improved efficiency
• Exhibits lower electromagnetic interference noise characteristics compared to conventional PWM solutions

AC DC Converters, Offline Switchers Applications

• Switch-mode power supply (SMPS) designs
• Offline flyback converter circuits
• Quasi-resonant type switching power supply systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix designation, such as N, against official Sanken Electric documentation to confirm exact electrical specifications and pinout compatibility. Ensure the component matches the required 500V breakdown rating and TO-3P package configuration for your target application. Cross-reference datasheet revisions to guarantee alignment with current manufacturing standards and reliability requirements before finalizing procurement orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing offline flyback converters requiring quasi-resonant operation to minimize electromagnetic interference. The integrated MOSFET and controller simplify board layout and reduce component count. Verify that the 18.2V startup threshold and 19kHz to 25kHz switching range align with the system's timing and power requirements. Ensure thermal management strategies accommodate the TO-3P package constraints for sustained operation.

AC DC Converters, Offline Switchers Part Context

The STR-X6757N belongs to the STR-X6700 series from Sanken Electric. This family comprises power ICs combining power MOSFETs with control logic for quasi-resonant switching power supplies. The series targets applications demanding high efficiency and reduced noise emissions. The STR-X6757N specifically addresses offline flyback topologies, offering a consolidated solution for designers seeking to optimize performance and simplify assembly processes.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official Sanken Electric substitution guides for verified alternatives. Do not assume cross-compatibility with other manufacturers' quasi-resonant controllers without verifying pinout, voltage ratings, and internal protection mechanisms. Validate any substitute against the original datasheet specifications to ensure functional equivalence in the target SMPS application.