FAN73932M

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PMIC or power management integrated circuits are integrated circuits or semiconductor devices that integrate several power management functions found in an electronic system. Most notably, the PMICs typically combine various voltage regulators, but also other power-management functions such as battery charging, power-on reset, and power sequencing.Gate drivers are essentially circuits that are designed to drive gates of MOSFETs and IGBTs in power circuits, in order to switch power from the main line to components such as motors and lights.Gate drivers use a variety of different techniques to provide power management, such as using pulse width modulation, slow turn off, fast turn-on, and other control techniques.The FAN73932M IC is a driver IC for high-side MOSFETs and IGBTs that features a dedicated low-side gate drive which dissipates the charge during turning off. With this feature, the FAN73932M IC is suitable for a variety of medium and low voltage switching applications, including AC induction motors, solar panel inverters, and power supplies.The FAN73932M features integrated protection features, such as over-current detection and over-temperature protection, and adjustable threshold and delay settings to provide accurate, safe, and reliable operation.The FAN73932M also features a low-side gate driver (LSGD) which helps ensure that the MOSFET turn-off process is fast, efficient, and safe. This is achieved by dissipating excess charge from the low-side MOSFET during the turn-off process.The LSGD also has two adjustable thresholds, one for fast turn-off, the other for slow turn-off. This feature ensures that the FAN73932M is suitable for a wide range of applications, from low to medium voltage, and high frequency to low frequency switching.In terms of its operating principle, the FAN73932M works by using a high–side MOSFET to drive high voltage loads. The high-side MOSFET is connected to the low-side gate driver, which dissipates the charge during turn-off. In the turn-on process, the LSGD slowly charges the gate to allow time for the power supply rail to reach its nominal value. The high-side MOSFET then turns on, allowing current to flow and the load to be switched.In addition, the FAN73932M features an adjustable soft start function which is used to minimize inrush current on start up. The soft start feature quickly ramps the gate voltage until it reaches the target value and then slowly charges the gate until the target current is reached, and then maintains this current level.The FAN73932M is also capable of monitoring and controlling various parameters, including under voltage lockout, over voltage lockout, over temperature protection and over current protection, to ensure the power system remains safe.The FAN73932M IC is compatible with both 3.3V and 5V logic levels and can be used with a range of microcontrollers and processors.In conclusion, the FAN73932M is a versatile driver IC for MOSFETs and IGBTs that is suitable for a variety of medium and low voltage switching applications. Its integrated protection features and adjustable soft start function ensure safe and reliable operation, while its low-side gate driver helps to dissipate excess charge during the MOSFET turn-off process. The FAN73932M is compatible with 3.3V and 5V logic levels, and is capable of monitoring and controlling a range of parameters, such as over voltage, over current, and over temperature protections. This makes it an ideal choice for applications such as AC induction motors, solar panel inverters, and power supplies.

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