BQ2050SN-D119TRG4

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BQ2050SN-D119TRG4: Application Field & Working Principle

The BQ2050SN-D119TRG4 is a battery management integrated circuit (IC) that belongs to the Power Management ICs (PMICs) family, specifically within the Battery Management branch. It is a single-cell Li-Ion battery fuel gauge IC that offers accurate relative capacity and state of health (SoH) feedback to the host system using an industry-standard SMBus host interface. Some of the key features of this IC include an 11-bit A/D Mode (ADC) for measuring voltage, current and temperature of the battery pack, support for multi-battery pack systems, and CAN bus and I2C communications for wiring different battery packs in parallel or in series. Additionally, the BQ2050SN-D119TRG4 offers up to 128 bytes of non-volatile memory for storing battery pack related information, a high signal-to-noise ratio for improved ADC accuracy, and a programmable threshold for output signal.

Application Fields and Use Cases

Despite being marketed as an IC for consumer products, the BQ2050SN-D119TRG4 is suitable for many and diverse applications. Its design and features make it an attractive option for applications such as notebook and portable computing devices, digital audio players, industrial robots, and consumer electronic products that require precise battery power management. It is also well suited for electric vehicles, military and aerospace applications, medical equipment, and point-of-sale terminals.

The BQ2050SN-D119TRG4 is capable of measuring battery pack voltage, current, and temperature which enables it to be used in applications that require fuel gauging as well as providing smart battery control. This IC also offers a powerful mechanism for providing alerts when the battery is nearing its minimum required voltage or temperature thresholds, which allows for improved safety of the system and protected workloads. Additionally, its multi-battery pack support feature can be used for a wide range of applications such as powering remote or mobile devices, or delivering high power-density for computationally intense tasks. Furthermore, its CAN bus and I2C communication capabilities allow for the IC to be easily integrated into existing and future ecosystems, allowing for the design to be improved and refined as needed.

Working Principle

The BQ2050SN-D119TRG4 is built on an embedded microcontroller with a patented Battery Fractional Model (BIFM™) algorithm. This algorithm is used to accurately predict the remaining capacity and SoH of a battery pack, taking into account area and temperature characteristics of the battery. The BQ2050SN-D119TRG4’s ability to accurately measure these parameters is further strengthened through the use of a high signal-to-noise ratio (SNR) which allows the IC to accurately measure small changes in the battery’s characteristics.

In addition to providing accurate measurements, the BQ2050SN-D119TRG4 is also designed to protect against overcharging and overdischarging of the battery, as well as provide safety certification for the battery pack. The IC uses an open-drain voltage monitor to detect if the voltage is above or below the preset threshold. If it finds the voltage outside the threshold, it will immediately shut off the battery connection to prevent further damage.

The BQ2050SN-D119TRG4 also features a programmable output signal, which allows for a reliable communication protocol between the host system and the battery pack. This functionality is used to enable the host system to monitor the status of the battery, as well as provide additional information to the system, such as battery temperature and current.

To further enhance the performance of the BQ2050SN-D119TRG4, the IC also features non-volatile flash memory, which allows for accurate and reliable data storage of the runtime environment. This includes data such as the battery pack’s current, voltage, temperature, and remaining capacity. This data can then be used to adjust the operating parameters of the system for improved power management and efficiency.

Overall, the BQ2050SN-D119TRG4 is a highly versatile PMIC that can be used in a wide variety of applications. Its accurate measurements, comprehensive fuel-gauging capabilities, and reliable output signals make it a reliable solution for any power management system.

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