The NCP1230 represents a major leap towards achieving low standby power in medium-to-high power Switched-Mode Power Supplies such as notebook adapters, off-line battery chargers and consumer electronics equipment. Housed in a compact 8-pin package (SOIC-8, SOIC-7, or PDIP-7), the NCP1230 contains all needed control functionality to build a rugged and efficient power supply.

Features

• Current-Mode Operation with Internal Ramp Compensation

• Internal High-Voltage Startup Current Source for Loss-Less Startup

• Extremely Low No-Load Standby Power

• Skip-Cycle Capability at Low Peak Currents

• Direct Connection to PFC Controller for Improved No-Load Standby Power

• Internal 2.5 ms Soft-Start

• Internal Leading Edge Blanking

• Latched Primary Overcurrent and Overvoltage Protection

• Short-Circuit Protection Independent of Auxiliary Level

• Internal Frequency Jittering for Improved EMI Signature

• +500 mA/-800 mA Peak Current Drive Capability

• Available in Three Frequency Options: 65 kHz, 100 kHz, and 133 kHz

• Direct Optocoupler Connection

• SPICE Models Available for TRANsient and AC Analysis

• Pb-Free Packages are Available

Typical Applications

• High Power AC-DC Adapters for Notebooks, etc.

• Offline Battery Chargers

• Set-Top Boxes Power Supplies, TV, Monitors, etc.