NCP1072P100G

AC DC Converters, Offline Switchers Overview

The NCP1072P100G is a high-voltage switcher for low-power offline SMPS, integrating a fixed-frequency current-mode controller with a 700 V MOSFET. It operates at a switching frequency of 100 kHz and supports flyback topology. The device features a maximum duty cycle of 69% and functions within a supply voltage range of 6.3 V to 10 V. It utilizes a PDIP-7 package and includes protection mechanisms such as overtemperature, overvoltage, and short-circuit protection.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V MOSFET with a fixed-frequency current-mode controller
• Provides dynamic self-supplying operation without auxiliary windings
• Includes soft-start, frequency jitter, and slope compensation
• Features automatic recovery overvoltage protection and timer-based short-circuit detection

AC DC Converters, Offline Switchers Applications

• Low power offline switched-mode power supplies
• AC-DC converters requiring isolated output
• Applications demanding high standby efficiency through skip-cycle mode

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix P100G confirms the 100 kHz switching frequency variant. Ensure the PDIP-7 package type matches the target PCB footprint. Confirm RoHS compliance status via the latest manufacturer declaration. Check for any recent Product Change Notifications regarding pinout or material updates before finalizing the design.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring integrated high-voltage switching in a compact form factor. The 100 kHz frequency offers a balance between size and efficiency. Consider the peak current limit of 250 mA when sizing the transformer. Evaluate the need for an auxiliary winding if input power consumption below 50 mW is required at high line voltages.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP107x series of high-voltage switchers designed for low-power applications. The series differentiates models by switching frequency (65, 100, or 130 kHz) and peak current limits. The NCP1072 specifically targets the 100 kHz option with a 250 mA peak current capability, suitable for outputs up to approximately 14 W.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1072P065G: Offers 65 kHz switching frequency. NCP1072P130G: Offers 130 kHz switching frequency. NCP1076P100G: Higher peak current capability of 400 mA at 100 kHz.