BD2247G-GTR

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The BD2247G-GTR is a power distribution switch, load driver and system abutment IC designed for automotive applications. It combines important functions such as a fault detection circuit, overvoltage protection, overcurrent protection, and thermal protection.

The BD2247G-GTR is designed for an automotive application field, so it has a wide current range for supplying power to ECUs and related loads. Furthermore, it also has direction control and power control outputs to control external circuits in the ECU system.

Working Principle:

The BD2247G-GTR is a monolithic IC containing a fault detection circuit, an overvoltage protection circuit, an overcurrent protection circuit and a thermal protection circuit. A protection circuit prevents a system failure caused by an abnormal supply voltage and a supply line such as system wiring. An overcurrent protection circuit detects the overcurrent caused by an abnormal system load when the IC is connected to an ECU and its related loads, and if an overcurrent is detected, the power supply is stopped.

The switch element of the BD2247G-GTR is configured with power MOSFETs in a bridge configuration.The power is switched on/off by driving the gate terminal of the MOSFET bridge with appropriate voltage.

The BD2247G-GTR incorporates an internal short-circuit protection circuit and two output circuits. An internal short-circuit protection circuit monitors the output voltage of the MOSFET bridge and stops the power supply of the system if an abnormally high output voltage is detected. The two output circuits are controllable by the external control pin. Under normal conditions, the default circuit is active and the power supply is enabled by driving the power control output pin to the high level (5 V).

The BD2247G-GTR also includes several digital functions such as 2-bit address and direction control. Address pins are used to set the digital address of the IC, so two or more ICs can be operated in one system. Direction control pins can control the working direction of the CMOS switch.

The BD2247G-GTR also has integrated diagnostic functions to detect open circuits, short-circuits, and other faults. This can help prevent system failure and increase reliability.

To sum up, the BD2247G-GTR is a versatile power distribution switch, load driver, and system abutment IC that is suitable for use in automotive applications. It can provide protection against overvoltage, overcurrent, and thermal breakdown, as well as address and direction control and various diagnostics.

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