NCP1230D100R2

AC DC Converters, Offline Switchers Overview

The NCP1230D100R2G is a current-mode PWM controller designed for flyback topologies, operating at a fixed switching frequency of 100 kHz. It features an internal high-voltage startup source and supports a maximum duty cycle of 85%. The device provides a peak output current drive capability of 800 mA and operates with a supply voltage up to 18 V. It is housed in an 8-pin SOIC package and functions within a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Current-mode operation with internal ramp compensation
• Extremely low no-load standby power with skip-cycle capability
• Latched primary overcurrent and overvoltage protection

AC DC Converters, Offline Switchers Applications

• High power AC-DC adapters for notebooks
• Offline battery chargers
• Set-top boxes power supplies
• TV and monitor power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the complete manufacturer part number includes the trailing 'G' suffix (NCP1230D100R2G) to confirm RoHS compliance and lead-free packaging status. Confirm the specific package variant matches the required pinout, as the NCP1230 series is available in SOIC-7, SOIC-8, and PDIP-7 configurations. Ensure the design accounts for the 100 kHz fixed frequency option when selecting external components.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring rugged efficiency and low standby power in medium-to-high power switched-mode supplies. The integrated high-voltage startup source eliminates the need for auxiliary bias windings during startup. Consider the direct optocoupler connection feature for simplified feedback loop design and the internal leading edge blanking for noise immunity in flyback converters.

AC DC Converters, Offline Switchers Part Context

The NCP1230 belongs to onsemi's NCP series of power management ICs, specifically engineered for offline switch-mode power supplies. It represents a significant advancement in achieving low standby power consumption while maintaining high performance. The device integrates essential control functionalities into a compact package, reducing external component count and board space requirements for consumer electronics and adapter designs.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation.