L6590N

AC DC Converters, Offline Switchers Overview

The L6590N is a high-voltage monolithic switcher designed for offline flyback converters. It integrates a 700 V power MOSFET with a current-mode PWM controller, featuring a built-in oscillator and soft-start function. The device supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operations. Key electrical parameters include a supply voltage range of 12 V to 18 V, a maximum switching frequency of 150 kHz, and an operating junction temperature range from -40 °C to +150 °C. It utilizes a DIL-15 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V power MOSFET with a current-mode PWM controller in a single monolithic structure
• Includes a built-in oscillator and soft-start function to simplify design and reduce component count
• Supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operations
• Features robust protection mechanisms including overcurrent protection and thermal shutdown

AC DC Converters, Offline Switchers Applications

• Offline single-output flyback converters
• Low-power systems requiring cost-effective solutions
• Power supplies subject to safety, EMC, and standby consumption regulations

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific ordering suffix to ensure the correct package type and tape/reel configuration match your assembly requirements. Confirm that the component meets the required RoHS compliance standards for your target market. Cross-reference the datasheet revision date to ensure compatibility with your design specifications and regulatory updates. Check for any specific handling instructions related to the high-voltage integration within the package.

AC DC Converters, Offline Switchers Selection Notes

Select the L6590N when designing low-power offline flyback converters that require a simplified bill of materials. Its integrated 700 V MOSFET eliminates the need for external discrete switching components. The current-mode control architecture provides inherent line feedforward compensation. Consider this part for applications where space constraints and cost efficiency are critical factors alongside standard performance metrics.

AC DC Converters, Offline Switchers Part Context

The L6590 belongs to a family of high-voltage monolithic switchers from STMicroelectronics. These devices are engineered to simplify the design of offline power supplies by combining the power stage and control logic. The L6590 specifically targets low-power applications, offering a balance between performance and simplicity compared to higher-power counterparts in the same series.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes may include other L6590 variants with different package options or suffixes. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure that any replacement maintains the same 700 V rating and control architecture to preserve circuit functionality.