FAN3122TMX Integrated Circuits (ICs)

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PMIC - Gate Drivers refers to integrated circuits which are designed to control voltage levels on power semiconductor devices. The FAN3122TMX gate driver is one such type. It is designed to drive low voltage power MOSFETs and IGBTs in high current automotive applications. In this article, we will discuss the application field and working principle of the FAN3122TMX.

Application Field

The FAN3122TMX is suitable for power switch control applications in the automotive sector. It can be used in conjunction with low voltage N-channel MOSFETs and IGBTs. It is designed to protect against over-voltage, under-voltage, over-current, and over-temperature conditions. It is also designed to meet the EMC requirements of the European Union, and is compliant with AEC-Q100 requirements.

Some of the applications that the FAN3122TMX can be used for include DC/DC converters, battery chargers, solenoids, motors, and other high current power switches. It is suitable for operating in ambient temperatures ranging from -40°C to +125°C.

Working Principle

The FAN3122TMX has two components – an ultra-low RDS(on) gate driver and an integrated low voltage CMOS logic driver. The gate driver component is responsible for controlling the MOSFET or IGBT gate voltage. Its ultra-low RDS(on) level ensures that the gate voltage reaches its threshold quickly and accurately, and its low gate charge ensures that the gate voltage is applied evenly. The logic driver component translates the control inputs into the required physical gate voltage.

The FAN3122TMX includes two low voltage CMOS logic inputs. These inputs can be used to control the gate voltage and provide fault protection. They can also be used for shut-off protection to ensure that the MOSFET is shut down in the event of a fault such as over-temperature, over-current, under-voltage, or over-voltage. Additionally, the FAN3122TMX features a current limiting system that helps ensure that the device does not get over-stressed.

The FAN3122TMX also features an Enable pin which allows the user to shut down the device to reduce power consumption. This can be done by externally controlling the logic pin or by setting the logic pin to a logic low level. The device can also be enabled/disabled by setting the logic pin to a logic high level. In addition, the FAN3122TMX includes a power-on reset (POR) circuit that ensures that the device is reset upon powering up.

The FAN3122TMX is designed to meet stringent automotive EMC requirements. It features an integrated EMI suppression circuit which reduces electrical noise and transients that can interfere with other devices. Additionally, the device is designed to meet stringent automotive over-temperature, over-current, under-voltage, and over-voltage requirements.

The FAN3122TMX is an integrated solution which helps to simplify the design of power switch control applications in the automotive industry. Its integrated ultra-low RDS(on) driver, low voltage CMOS logic driver, current limiting system, Enable pin, and power-on reset circuit help to provide reliable and robust performance.

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