X9520V20I-BT1

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This paper focuses on the application field and working principle of X9520V20I-BT1, which is a PMIC - Laser Drivers. The X9520V20I-BT1 is an integrated laser driver for various laser modules. It provides power, current, and temperature management, as well as protection circuits.

The X9520V20I-BT1 is well suited for a broad range of applications, including automotive, surveillance, and medical applications. The current reference for the device is programmed with an external resistor network, providing laser power control from 0 to 5A with 15mA steps. The internal temperature sensor can be used to monitor the junction temperature of the laser diode and to adjust the maximum output power at up to 160°C. The device also offers three levels of current limit settings, as well as open and short circuit protections.

The working principle of the X9520V20I-BT1 is relatively simple. The driver regulates the voltage supplied to the laser diode according to the settings of an external resistor network. The device monitors the current consumption of the laser diode with an internal peak detector and adjusts the output voltage in order to maintain the current within the programmed range. The internal temperature sensor monitors the laser\'s junction temperature and adjusts the output current to ensure safe operation. In addition, the device provides a soft-start feature to prevent inrush currents.

The X9520V20I-BT1 also offers adjustable over-current protection and under-voltage lockout functions. It has a high efficiency of up to 90%, making it suited for low power applications. The device provides a diagnostic output and an enable input, which can be used to control the output current and disable the driver without floating the supply pins.

The X9520V20I-BT1 is a compact, high-efficiency device appropriate for a range of applications. It offers easy-to-use controls, quick response time and reliable performance. With its robust protection features, it provides a reliable and safe laser driver solution for a variety of laser applications.

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