TS831-3IPT

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PMIC (Power Management Integrated Circuit) supervisors are used to ensure correct and reliable operation of electronic equipment. The TS831-3IPT is one of these supervisors and this article will outline its application field and the underlying working principle.

The TS831-3IPT supervisor is a high-performance voltage monitoring IC (integrated circuit) used mainly for 2.5V to 28V DC supplies. In addition, its accuracy is higher than conventional voltage detection circuits; it is specified as some 0.6% between 6.5V and 9.5V. Furthermore, the TS831-3IPT supports up to 5 independent system start voltages, each with a range of 2.5V to 28V DC.

The TS831-3IPT supervisor has a single Series MOSFET driver with non-overload protection. This Series MOSFET driver is capable of driving external loads up to 3A and is intended to be used with external MOSFETs. An important feature of this IC is that it has an undervoltage lockout (UVLO) feature that disables the output when the input voltage falls below a certain predefined threshold. This feature is used to protect the system from accidental drop in power supply voltage.

The TS831-3IPT supervisor is typically used in automotive applications, notably for controlling power windows and mirrors. It can also be used for controlling power steering and airbag systems. Furthermore, it can be used for automotive powertrain, car audio systems and ECU protection.

The working principle of the TS831-3IPT supervisor is based on the comparison between the monitored and the preset voltage thresholds (start voltage, reset voltage, and lockout voltage). When the input voltage is lower than the start voltage and higher than the reset voltage, the supervisor will drive its output signal high, turning on the external MOSFET and providing power to the system. Likewise, when the input voltage is higher than the start voltage and lower than the reset voltage, the supervisor will drive its output signal low, turning off the external MOSFET and preventing supply to the system.

When the input voltage is lower than the lockout voltage, the output signal will be disabled and the external MOSFET will be turned off. A status flag is provided at the output to indicate UVLO operation. This flag can also be used to reset a microcontroller and take corrective action when the voltage is too low.

The TS831-3IPT supervisor is a versatile Power Management Integrated Circuit supervisor with a wide range of applications in automotive systems. It is a robust and reliable device that provides protection from undervoltage and overvoltage conditions and is a crucial component in the reliable operation of electronics. The working principle of the supervisor is based on the comparison between the monitored and preset voltage thresholds and supports up to 5 independent system start voltages.

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