VB125ASP613TR

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The VB125ASP613TR is a power distribution switch, load driver, and output port protection switch device from PMIC (Power Management IC). It provides up to 125V and +6•13V output with low RDS gate-source on-resistance and on-resistance corresponding to the input voltage.

The VB125ASP613TR has a wide input voltage range that can work from 4.5V to 20V, allowing it to be used in a variety of applications including automotive and 24V industrial applications. The device can filter RF noise and provides ESD protection on its inputs. The on-resistance of the driver is low and fixed regardless of the input voltage.

The VB125ASP613TR is particularly useful when integrated into PMICs or other systems because of its low power consumption and high speed turn-off and turn-on times. It is also a good solution for applications that require high on-resistance, as it helps to minimize power dissipation. In addition, this device has integrated protection mechanisms to help ensure safe, reliable operation in even the harshest industrial environments.

The working principle of the VB125ASP613TR is based on a three-level power distribution scheme. The first level is a VDD voltage of 8V, which supplies power to the high-side and low-side driver, and the switch. The second level is a VBG voltage of4.5V, which supplies power to the control logic and reference. The third level is a VDD3.3V voltage, which supplies power to the low-side output protection switch.

The high-side driver is connected to the VDD voltage and provides output voltage up to the full VDD voltage. The low-side driver is connected to the VBG voltage and provides negative output voltages up to a maximum of –13V. The low-side driver is also connected to the VDD3.3V voltage, allowing it to provide an additional voltage offset of up to 3.3V. This offset voltage allows the output voltage to be shifted downward and protects against short-circuit fault conditions.

The VB125ASP613TR also features two on-chip sensing circuits, the load current sensing circuit and the gate-charge sensing circuit. The load current sensing circuit provides information on the output current to the control logic and allows for over-current protection. The gate-charge sensing circuit monitors the gate-source voltage and enables the gate-current limit protection.

In addition to its high-performance power distribution and switch functions, the VB125ASP613TR also provides a wide range of output port protection features. Its output port ESD protection and latch-off detect provide protection from connection and over-voltage faults while its on-chip over-temperature protection and short-circuit protection protect the system from high temperature and short-circuits. Furthermore, its output port high-side leakage current limit ensures that the device cannot exceed the safe current limit.

The VB125ASP613TR is a highly effective power distribution switch and load driver solution that provides a wide range of features and functions, helping to ensure reliable operation in even the harshest of industrial environments. Its integrated protection mechanisms provide a high degree of safety and reliability, while its low power consumption, high speed turn-on and turn-off times, and customizable output voltage make it one of the most versatile PMIC devices available.

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