onsemi

NCP1937C1DR2G

NCP1937C1DR2G Description

The NCP1937C1DR2G is a Power Factor Correction (PFC) controller designed for critical conduction mode (CRM) applications, manufactured by onsemi. This IC is part of the Power Management Integrated Circuits (PMIC) category and is housed in a 20-lead SOIC package. Although it is now obsolete, the NCP1937C1DR2G remains a notable component due to its robust performance and specific feature set. It operates within a supply voltage range of 9V to 30V and features a startup current of 20 mA. The device is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and regulatory standards. The NCP1937C1DR2G is available in a surface-mount package, specifically in a tape and reel format, making it suitable for automated assembly processes. Its moisture sensitivity level (MSL) is 1, indicating it is unlimited and suitable for various environmental conditions.

NCP1937C1DR2G Features

The NCP1937C1DR2G offers several distinct features that set it apart from similar PFC controllers:

• Critical Conduction Mode (CRM): This mode ensures efficient operation by allowing the inductor current to drop to zero at the end of each switching cycle, minimizing switching losses and improving overall efficiency.
• Wide Input Voltage Range: The ability to operate between 9V and 30V makes it versatile for various power supply applications, accommodating different input voltage levels.
• Low Startup Current: With a startup current of only 20 mA, the NCP1937C1DR2G can be used in systems where low power consumption during startup is crucial.
• Surface Mount Technology: The surface-mount package type facilitates easy integration into modern PCB designs and supports automated manufacturing processes.
• Environmental Compliance: The NCP1937C1DR2G is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental regulations and can be used in a wide range of applications without regulatory concerns.
• Moisture Sensitivity Level 1: This rating indicates that the component is suitable for use in environments with varying humidity levels, providing reliability and durability.

NCP1937C1DR2G Applications

The NCP1937C1DR2G is ideal for a variety of applications where efficient power factor correction is required:

• Power Supplies: Suitable for AC-DC power supplies in consumer electronics, industrial equipment, and telecommunications infrastructure.
• Uninterruptible Power Supplies (UPS): Provides efficient power factor correction in UPS systems, ensuring reliable power delivery during outages.
• Solar Inverters: Enhances the efficiency of solar inverters by optimizing power factor correction, contributing to overall system efficiency.
• Motor Drives: Ideal for motor drive applications where power factor correction is necessary to meet regulatory standards and improve energy efficiency.

Conclusion of NCP1937C1DR2G

The NCP1937C1DR2G, despite being obsolete, remains a significant component in the power management domain. Its critical conduction mode operation, wide input voltage range, and low startup current make it a versatile choice for various applications. The device's environmental compliance and surface-mount package further enhance its suitability for modern electronics manufacturing. While newer alternatives may have emerged, the NCP1937C1DR2G continues to offer reliable performance and remains a valuable option for specific use cases where its unique features are advantageous.