The CP1001PN is an integrated offline switcher IC from Power Integrations, belonging to their CAPSwitch family. This family is designed for low power, highly efficient power supplies, eliminating the need for external bias components. It's primarily used in applications requiring a simple and cost-effective power conversion solution.

Applications

• Standby power supplies
• Chargers for mobile devices
• Adapters for small appliances
• Metering power supplies
• Auxiliary power supplies in larger systems
• LED lighting power supplies

Features

• Integrated 725 V MOSFET: Simplifies design and reduces component count.
• Self-Biased: No external bias components are required.
• EcoSmart™ Energy Efficiency: Meets stringent energy efficiency standards.
• Hysteresis Thermal Shutdown: Protects the IC from overheating.
• Frequency Jittering: Reduces EMI emissions.
• Auto-Restart Protection: Protects the power supply from overload and short-circuit conditions.
• Overvoltage Protection (OVP): Prevents damage due to excessive output voltage.

Benefits

• Simplified Design: Reduces design complexity and time.
• Reduced Component Count: Lowers overall system cost.
• High Energy Efficiency: Minimizes energy waste and reduces operating costs.
• Enhanced Reliability: Built-in protection features ensure robust operation.
• Improved EMI Performance: Reduces electromagnetic interference.
• Increased Safety: Comprehensive protection features enhance safety.

Additional Details

The CP1001PN utilizes a flyback topology and operates in discontinuous conduction mode (DCM) to achieve high efficiency. It incorporates advanced features such as cycle-by-cycle current limiting and overload power limiting to enhance system reliability. The integrated 725V MOSFET withstands high voltage stresses in offline applications. The EcoSmart technology enables the device to achieve extremely low no-load power consumption, meeting global energy efficiency regulations. The device typically operates at a switching frequency of around 132 kHz. The thermal shutdown feature protects the IC from damage due to excessive temperature. The CP1001PN is typically available in a PDIP-8 package. External components, such as the transformer, output diode, and output capacitor, are required to complete the power supply design. Detailed application notes and design tools are available from Power Integrations to assist in the design process. The device is designed for universal input voltage ranges (85-265 VAC).