FAN6921MLMY Integrated Circuits (ICs)

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FAN6921MLMY is an integrated circuit from Texas Instruments that performs power factor correction (PFC) for switched mode power supplies (SMPS) like the ones used in consumer, industrial and automotive applications. The device integrates a 650V MOSFET driver, an active voltage limiter and a high efficiency PFC controller. It offers superior performance by keeping the output voltage close to the desired setpoint, even in the light and heavy load conditions.

The device is designed to work with large industrial systems requiring AC line conditioners, as well as consumer and automotive applications with low power requirements that implement Class D and other power efficient architectures. It uses a valley switching technique to reduce the switching losses during operation and has a wide voltage range of 6V to 650V. It also features current mode control and programmable over current protection (OCP).

The FAN6921MLMY features an adjustable frequency PFC controller that automatically adjusts the switching frequency by changing the on/off time ratio of the device. This helps improve efficiency in light load conditions where the switching frequency may need to be reduced and helps lower the peak operating temperature. When used in critical conditions, it can also reduce EMI noise and improve the total power supply system efficiency.

The FAN6921MLMY also features an active voltage limiter (AVL) to prevent over voltage conditions. It has an adjustable voltage limit that can be used to prevent damage to the power supply system. It also has programmable OCP to prevent over current conditions in the output stages.

The FAN6921MLMY is an excellent choice for use in systems requiring high efficiency and power factor correction. It is a highly integrated device with all the necessary components needed for a reliable and efficient power supply system. With its adjustable frequency PFC controller and active voltage limiter, it can help improve the total system efficiency and reduce EMI noise.

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