FSB127AHN

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PMIC - AC DC Converters, Offline Switchers encompass a wide range of power supply solutions that enable electronic equipment to efficiently operate. Within this vast family of solutions, the FSB127AHN is a sophisticated device that provides reliable power to different types of applications. The FSB127AHN is a hybrid PWM/PFC controller that combines various features such as primary lagging PFC, current-mode Buck PWM, secondary side synchronous rectification, integrated channel protection, and a high power factor of up to 99% to provide efficient and reliable power solutions. It is designed to meet the EN169102 performance rating, making it suitable for power supplies ranging from desktop PCs to servers and other enterprise-level applications with high power capacity.In terms of application field and working principles, the FSB127AHN is primarily used in offline flyback power supplies that contain a transformer. In this type of power supply, the FSB127AHN is responsible for controlling the primary and secondary side operations. On the primary side, the PFC circuit, which is sensitive to leading power factor, monitors the input and controls the primary windings inductance to achieve a high power factor. On the secondary side, the PWM controller helps to control the output voltage by adjusting the duty cycle of the secondary side switch. In both sides the FSB127AHN has integrated protection such as undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal protection (OTP). On the primary side, the FSB127AHN can provide up to 1A output current. The operating frequency of the PWM can be adjusted up to 300kHz, allowing for greater power efficiency. It can also be used to support constant current and constant voltage applications. On the secondary side, the FSB127AHN can provide up to 4.5A output current and can support synchronous rectification, which helps to improve the power efficiency.Overall, the FSB127AHN is a versatile, reliable, and powerful device that can be used in different types of applications, both in terms of input and output power requirements. In addition, it can achieve a high power factor up to 99% to ensure efficient and safe operation. Moreover, its integrated protections provide reliable protection against short circuit, overcurrent, and overvoltage conditions, making it a viable option for different types of power supply applications.

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