PMIC - Supervisors

BD4823G-TR is a type of Power Management Integrated Circuit (PMIC) with supervisors, which provide over voltage detection through current sensing, using an internal comparator to detect an over-current signal. The output signal is then used to initiate an over-voltage protection (OVP) signal. In addition, it provides over-temperature detection to help protect against thermal runaway and overcurrent situations. The BD4823G-TR uses a resistor divider to monitor the output voltage from a power supply and the voltage drops are sense by the internal comparator.

Since BD4823G-TR is designed for over-voltage and over-temperature protection, it can be used in a wide range of applications including power systems, automotive powertrains, power rail protection and industrial electronics. Its OVP function is used as a safety mechanism to protect circuit components and the system from damage due to overvoltage. The over-temperature protection is used to prevent the system from overheating and can also be used as a failure indiction.

Working Principle

BD4823G-TR senses the output voltage of the power supply by using a resistive divider and compares it with the reference voltage. When the output voltage is greater than the reference voltage, the OVP signal is triggered and the power supply is shut down to avoid overvoltage.

The over-temperature protection is due to the internal comparator that monitors the temperature and triggers a signal if the temperature exceeds the set limit. The output signal can be used to trigger a warning system and/or shutdown the power supply.

Conclusion

BD4823G-TR is a great choice for providing over-voltage and over-temperature protection in a variety of applications. It is easy to set up and the internal comparator can detect voltage and temperature levels quickly. The OVP signal can help protect the system from damage due to overload and the over-temperature protection can help prevent the system from overheating.