The IW1691-10 is a highly integrated offline power factor correction (PFC) and quasi-resonant (QR) flyback controller manufactured by Renesas Electronics America (formerly iWatt). It's designed to meet stringent energy efficiency standards for AC-DC power supplies. This controller is commonly used in applications such as adapters, chargers, and auxiliary power supplies.

Applications

• AC-DC Adapters: Used in adapters for laptops, mobile phones, and other portable devices.
• Battery Chargers: Employed in battery chargers for electric vehicles, power tools, and other rechargeable devices.
• Auxiliary Power Supplies: Utilized in auxiliary power supplies for appliances, industrial equipment, and other electronic systems.
• LED Lighting: Suitable for LED lighting applications requiring high efficiency and power factor correction.
• Standby Power Supplies: Used in standby power supplies to minimize energy consumption when devices are not in use.

Features

• Integrated PFC and QR Flyback Controller: Combines power factor correction and quasi-resonant flyback control in a single chip.
• High Efficiency: Designed for high efficiency operation to minimize energy losses.
• Low Standby Power Consumption: Minimizes standby power consumption to meet stringent energy efficiency standards.
• Comprehensive Protection Features: Includes overvoltage protection, overcurrent protection, and overtemperature protection.
• Small Package Size: Available in a compact package for space-constrained applications.

Benefits

• Improved Energy Efficiency: Reduces energy consumption and lowers operating costs.
• Reduced System Cost: Integrated features minimize the need for external components.
• Simplified Design: Simplifies power supply design and reduces development time.
• Enhanced System Reliability: Comprehensive protection features ensure reliable operation.
• Compliance with Energy Efficiency Standards: Meets stringent energy efficiency standards, such as Energy Star and ErP.

Additional Details

The IW1691-10 operates from a wide input voltage range and is available in a space-saving package. It features adaptive voltage positioning (AVP) to optimize efficiency over the entire load range. The device is characterized for operation over the industrial temperature range, making it suitable for use in harsh environments. It supports various compensation techniques, allowing designers to optimize the control loop for their specific application.

The IW1691-10 also features advanced burst-mode operation for ultra-low standby power consumption. Its comprehensive protection features ensure reliable operation under various fault conditions. Furthermore, the device is designed to meet the stringent electromagnetic compatibility (EMC) requirements of modern electronic systems.