IR1150IPBF

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Power Factor Correction (PFC) is a key factor in the design of modern electronics products. It ensures that the maximum amount of available power is delivered to devices, reducing energy losses and improving system efficiency. The IR1150IPBF is an integrated, high performance PFC controller suitable for several applications requiring high input current and low THD. This article examines the application field and working principle of this device.

Application Field: The IR1150IPBF is suitable for use in many PFC applications, ranging from low power consumer electronics through to high power industrial electronics. It is widely used in AC-DC switching power supplies, as well as in Brushless DC Motor (BLDC) drives. It can be used to regulate the input current to meet power factor correction standards including EN61000-3-2 Class C.

Working Principle: The IR1150IPBF works to achieve a high power factor by monitoring the input current and adjusting the switching frequency to suit the load. It uses a proprietary closed loop system to regulate the current in the input stage of the power supply, using an external current transformer in order to accurately measure the input current. This current measurement is then used to adjust the duty cycle of the switch in order to maintain a high power factor.The device also uses an integrated dynamic voltage positioning function to ensure a very low THD at the output of the supply. This function is used to adjust the voltage on the output of the rectifier in order to maintain a low THD level. This is achieved by monitoring the output voltage feedback signals and adjusting the switching frequency accordingly.In addition, the device also incorporate failsafe protection features to provide robust and reliable operation over a wide temperature range. This includes an Over Temperature Protection (OTP) and an Under Voltage Lockout (UVLO) feature.

Overall, the IR1150IPBF is an ideal solution for many PFC applications, offering high performance and excellent power factor correction efficiency. Its wide operating temperature range and integrated protection features make it suitable for use in many demanding applications.

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