MC20XS4200BFKR2

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MC20XS4200BFKR2 Application Field and Working Principle

The MC20XS4200BFKR2 is a power switch and load driver integrated circuit (IC) belonging to the class of power management integrated circuit (PMIC) chips for power distribution switches, load drivers, commonly referred to as PMIC-Power Distribution Switches, Load Drivers (PDSL). It is fabricated by the well-known integrated circuits maker Microchip Technology Corporation.

The MC20XS4200BFKR2 is an enabler chip designed for power distribution applications centering on synchronous buck converters in both isolated and non-isolated DC/DC topologies. It enables automatic system shutdown in case of over-current, over-temperature, and over-voltage conditions by using a single chip. It helps in distributing power of up to 20W output power evenly and efficiently.

The MC20XS4200BFKR2 works by supporting sleep and idle modes when current consumption is low and the switching frequency of up to 1.2Mhz. It can also monitor system current by providing the integrated current sense amplifier and it also supports monitoring of system temperature by providing the integrated temperature sense amplifier. Its logic inputs of which its output is regulated is driven by an external PWM signal. The number of pins are 28 and its package size corresponds to a 7mm x 7mm Quad Flat No-Lead (QFN) package.

The key features and functionalities of MC20XS4200BFKR2 include:

• On-chip FET with RDS(ON) of 30mΩ.
• Monitoring of system temperature and current.
• Thermal protection and advanced over-voltage protection.
• Automatic system shut down in case of over-current, over-temperature, and over-voltage.
• Integrated switching frequency up to 1.2MHz.
• Internal control loop to publish system current.
• Voltage ranging from 2.7V to 5.5V.
• Low operating current of 440 uA.
• Integrated FET to deliver up to 20W.

The MC20XS4200BFKR2 is mainly used for power distribution in applications such as motor control applications,automotive parts, white goods, and industrial equipment. It also finds application in synchronous buck topologies as a low power point of load for General-Purpose Input/Output (GPIO) applications.

In summary, the MC20XS4200BFKR2 is a power management IC designed to help automate system shutdown in case of over-current, over-temperature, and over-voltage conditions. It offers current and temperature monitoring, internal control loop to publish the system current, and integrated FET to deliver up to 20W output power. Its frequency is 1.2 Mhz, voltage ranges from 2.7V to 5.5V, and current of 440 uA. Its applications are in motor control applications automotive parts, white goods, industrial equipment, and GPIO boards.

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