BU4946FVE-TR

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PMIC stands for Power Management Integrated Circuit, and Supervisors are one type of PMICs. Generally, they are dedicated circuits designed to protect other components from damage due to overcurrent, overvoltage, or overheating. In this article, we will focus on the BU4946FVE-TR Supervisors, discussing its application fields and how it works.

BU4946FVE-TR is a supervisor IC integrated with low-voltage detection, high-voltage detection, voltage monitor, over-current detection and the protection function to protect automotive system from over-current, over-voltage and short-circuit. This IC was designed to be used in a wide range of automotive applications, such as engine control, body electronics, body control, powertrain and safety.

In terms of functionality, BU4946FVE-TR provides over-voltage protection by monitoring the input voltage via a voltage divider and comparing it with a reference voltage. If the input voltage goes above the threshold, the over-voltage protection circuit is triggered and the IC will shut off its power supply output, thus protecting other components in the circuit.

The IC also has an over-current detection circuit, which is used to detect excessive current levels. When the current level exceeds a certain threshold, the over-current protection circuit is triggered and the IC shuts off power supply output, protecting other components in the circuit.

Once the over-voltage or over-current protection circuit has been triggered, the BU4946FVE-TR has a built-in voltage monitor circuit. This circuit monitors the voltage of the power supply output and triggers the power goo sequence control circuit when the voltage drops below a certain level. This sequence control circuit is then used to turn off the power supply completely and reset the IC.

Finally, the BU4946FVE-TR IC also features short-circuit protection. This protection works by monitoring the voltage of the power supply output and comparing it with a reference voltage. If the voltage drops below the reference voltage, this indicates a short-circuit and the IC will shut off its power supply output, thus protecting other components in the circuit.

In summary, BU4946FVE-TR Supervisors are designed to provide protection against overvoltage, overcurrent, and short circuit in automotive applications. The supervisor IC utilizes voltage divider, over-voltage protection, over-current detection, voltage monitor, and power goo sequence control circuits to protect other components in the circuit from potential damage.

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