The BU4220FVE-TR is a comprehensive circuit supervisory solution designed to help protect electronic equipment from overcurrent surge and other problems that can damage sensitive electronics. It is designed to provide circuit protection against a variety of failure conditions such as overvoltage, overcurrent, short-circuit and undervoltage shutdown. It also helps control over-voltage or over-current surges, and detect system abnormality.

Application Field

The BU4220FVE-TR is typically used to protect against overvoltage, overcurrent, and undervoltage problems. It is especially valuable for turning off a device in an overvoltage or overcurrent situation and restarting again in a safe state after the condition has been removed. It is frequently used in consumer audio/video, automotive, and medical industries.

In consumer audio/video, the BU4220FVE-TR can be used for protection of high-end digital audio/video equipment. It is designed to minimize the possibility of system damage due to overvoltage and high current caused by short-circuits or power surges. This provides a higher level of protection against damage to sensitive electronic equipment.

In automotive applications, the BU4220FVE-TR can be used to provide protection against overvoltage and overcurrent conditions that can damage the vehicle battery and other sensitive electronics. Additionally, it can be used to protect against tampering with the vehicle electronics by detecting system faults and unplugging the battery. This provides an extra layer of security against unauthorized access.

The BU4220FVE-TR is also used in medical applications as it provides reliable overvoltage and overcurrent protection for medical equipment. This can help ensure patient safety as it helps protect against electrical shock, power outages, and equipment malfunctions.

Working Principle

The BU4220FVE-TR works by monitoring the voltage and current through the protected circuit. When a fault is detected, the BU4220FVE-TR will automatically shut off the power to the protected circuit. It also provides built-in over-voltage and over-current detection and protection functions.

The BU4220FVE-TR uses a two-pole over-voltage protection method. This means that when the voltage exceeds the rated voltage, the voltage is rapidly switched off. This helps protect the device from over-voltage damage. Additionally, the BU4220FVE-TR works in a similar way to detect and protect against over-current conditions.

The BU4220FVE-TR also includes a protection circuit which helps protect against electrical noise, power supply disturbances, task contention, and other intermittent electrical problems. By providing a stable power supply to the protected circuit, this helps prevent equipment malfunction or damage.

The BU4220FVE-TR is designed to provide maximum protection against a variety of fault conditions. It is an effective solution for safely and reliably protecting sensitive electronic equipment.