NCP1054P100G

AC DC Converters, Offline Switchers Overview

The NCP1054P100G is a high-voltage offline switcher from onsemi, designed for flyback topology AC/DC converters. It integrates a 700V power MOSFET and PWM controller in a 7-PDIP package. Key electrical parameters include a switching frequency of 100kHz, a maximum duty cycle of 77%, and a breakdown voltage of 700V. The device operates with a Vcc range of 7.5V to 10V and an startup voltage of 8.5V. It supports output isolation and handles up to 40W of power. The component functions within a temperature range of -40°C to +150°C TJ.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage 700V power MOSFET with a current-mode PWM controller for simplified design.
• Includes comprehensive protection features such as overcurrent limiting, open-circuit detection, overload protection, and thermal shutdown.
• Features internal startup circuitry that eliminates the need for auxiliary windings in transformer designs.

AC DC Converters, Offline Switchers Applications

• Offline flyback power supplies
• AC/DC converter modules
• General-purpose isolated power conversion

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'P100G' against official datasheets to confirm pinout and electrical characteristics, as variations exist within the NCP1054 family. Confirm RoHS compliance status via the manufacturer's latest documentation. Check for obsolescence notices or PCNs, as this part may be discontinued or subject to supply constraints. Ensure the 7-PDIP package matches your PCB footprint requirements before ordering.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a simple, cost-effective solution for low-to-medium power isolated DC-DC conversion. The integrated nature reduces external component count compared to discrete solutions. Consider the 7-PDIP package for through-hole mounting needs. Evaluate the 100kHz switching frequency against EMI requirements and transformer size constraints. Verify that the 40W power capability aligns with the target application load.

AC DC Converters, Offline Switchers Part Context

The NCP1054 series belongs to onsemi's Blue Angel family of high-voltage switches. These devices are designed to simplify the design of offline power supplies by integrating the power switch and control logic. The NCP1054P100G specifically denotes the 100kHz variant in a PDIP package. This family targets consumer electronics and industrial power adapters where reliability and ease of implementation are critical.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the NCP1054 family, such as NCP1051 or NCP1052, which may differ in switching frequency or current rating. Verify pin compatibility and electrical specifications before substituting. Consult onsemi documentation for approved replacements or end-of-life notifications.