The OB3632NCPA is a highly integrated current mode PWM control IC optimized for offline flyback converter applications, manufactured by On-Bright. This device is designed for high-performance, low standby power AC/DC converters. It integrates advanced features to improve efficiency, reduce BOM cost, and enhance system reliability. The IC incorporates comprehensive protection features and is suitable for various power supply applications requiring stringent energy efficiency and safety standards.

Applications

• Power adapters for smartphones and tablets
• Standby power supplies for TVs and set-top boxes
• LED lighting applications
• Household appliance power supplies

Features

• Integrated high-voltage startup circuit
• Optimized current mode PWM control
• Frequency jittering for improved EMI performance
• Built-in soft-start function
• Comprehensive protection features, including over-voltage protection (OVP), over-current protection (OCP), over-temperature protection (OTP), and short-circuit protection (SCP)
• Low standby power consumption

Benefits

• High Efficiency: Optimized PWM control and low standby power consumption contribute to high energy efficiency, meeting stringent regulatory requirements.
• Reduced BOM Cost: High integration reduces the number of external components required, leading to a lower bill of materials cost.
• Enhanced Reliability: Comprehensive protection features ensure robust and reliable operation under various fault conditions, extending product lifespan.
• Simplified Design: Integrated features and a compact package simplify the power supply design process, reducing time to market.
• Improved EMI Performance: Frequency jittering reduces EMI emissions, simplifying compliance with regulatory standards and reducing the need for external filtering.

Additional Details

The OB3632NCPA utilizes current mode PWM control to provide stable and efficient operation over a wide range of input voltages and load conditions. The integrated high-voltage startup circuit eliminates the need for external startup resistors, reducing BOM cost and improving efficiency. The device incorporates a built-in soft-start function to limit inrush current during start-up. It is available in a compact package suitable for space-constrained applications. The comprehensive protection features ensure safe and reliable operation under various fault conditions.