FSCQ1565RPSYDTU

AC DC Converters, Offline Switchers Overview

The FSCQ1565RPSYDTU is a high-voltage PWM controller with an integrated switch, designed for offline flyback converters. It operates within a switching frequency of 20 kHz and supports a maximum duty cycle of 95%. The device features a breakdown voltage of 650 V and requires a supply voltage between 9 V and 20 V, with a startup threshold of 15 V. It is rated for up to 250 W output power and functions in temperatures ranging from -25°C to 85°C. The component utilizes a TO-3PF-7L package with formed leads.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power switch with the PWM controller to reduce external component count.
• Includes comprehensive protection mechanisms such as current limiting, overvoltage, overload, and thermal shutdown.
• Supports synchronous control characteristics for enhanced efficiency in flyback topologies.

AC DC Converters, Offline Switchers Applications

• Offline AC/DC power supplies
• Flyback converter designs
• General-purpose isolated power conversion

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (RPVDTU vs RPSYDTU) against the manufacturer's official datasheet to confirm pinout compatibility and package variations. Confirm end-of-life status, as some listings indicate this product may be discontinued. Ensure the selected variant matches the required thermal management and mounting specifications for the target application.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a simple, integrated solution for medium-power flyback converters. The internal switch simplifies design by eliminating external MOSFET selection. Consider the 650V rating for standard mains voltage inputs. Verify that the TO-3P package fits the available board space and thermal constraints.

AC DC Converters, Offline Switchers Part Context

This part belongs to the FSCQ series of Green Mode PWM controllers from onsemi. These devices are engineered for high efficiency and low standby power consumption. The series typically targets cost-sensitive, high-volume consumer and industrial power supply markets where reliability and simplified design are prioritized.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct replacements within the FSCQ family or other onsemi flyback controllers with similar voltage ratings and package types. Verify functional equivalence regarding pinouts and protection features before substitution.

AC DC Converters, Offline Switchers FAQ

What is the maximum switching frequency?

The maximum switching frequency is 20 kHz.

Does the device include an internal switch?

Yes, the FSCQ1565RPSYDTU integrates a high-voltage power switch internally.