BQ24023DRCR

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The BQ24023DRCR is a highly advanced programmable and integrated power management integrated circuit (PMIC) that has been specifically engineered to provide high efficiency charging control for lithium-ion cells and multichemistry batteries. As a single-chip solution, it offers a significant reduction in development time and cost while providing the flexibility to customize the system to meet the specific power management needs of the application. It is part of Texas Instruments’ broad portfolio of complete and comprehensive power management solutions, and is an ideal choice for designers looking to accelerate the development of wearable and personal electronics.

The BQ24023DRCR PMIC is a power management IC (PMIC) specifically designed to charge single or multiple cell Li-Ion, LiFePO4, and multichemistry batteries for a wide range of applications. It provides high efficiency with low noise output, and is designed to maintain battery health and performance by utilizing advanced features such as preconditioning, cell balancing, and constant current/constant voltage (CC/CV) charging. In addition, the BQ24023DRCR features an intelligent, adjustable charge current and voltages, fault protection, and a range of options to customize the charging system for specific applications.

The BQ24023DRCR application field and working principle focuses on how to use the PMIC as a battery chargers. This PMIC is specially designed to charge single or multiple cell Li-Ion, LiFePO4, and multichemistry batteries. It is able to provide a high-efficiency charging control with low noise output and maintain the battery health and performance. To achieve this, the BQ24023DRCR implements a few key techniques and features such as preconditioning, cell balancing, constant current/constant voltage (CC/CV) charging, fault protection, and adjustable charge current and voltages.

The BQ24023DRCR starts with preconditioning- when a battery is as low as 1V, the PMIC begins to precondition the battery, supply short Pulse Width Modulation (PWM) pulses and restore the battery to 1.8V. This allows devices to be used quickly and simply. After preconditioning, the PMIC applies cell balancing. During this phase, the PMIC transmits a current limited PWM signal to each of its internal batteries, allowing it to accurately and quickly balance the voltage among them. This creates optimal efficiency and performance from the battery.

Once the PMIC has preconditioned and balanced the battery, the third phase begins. In this phase, the BQ24023DRCR applies constant current/constant voltage (CC/CV) charging. This method of charging slowly charges the battery to its optimal voltage level, then maintains the voltage constant while increasing the current to finish charging fully. To increase safety and performance, the BQ24023DRCR includes fault protection. This includes a fault detection circuit, which will alert the user when the battery is approaching an overcharge or overdischarge level.

Finally, the PMIC also features adjustable charge current and voltages, allowing the designer to customize the charging system for specific applications. This can be tailored by selecting from the three predefined charging profiles, or by creating a custom configuration. This can be achieved with a few simple commands via an SPI or I2C interface.

In conclusion, the BQ24023DRCR PMIC is an excellent choice for designers looking to create a fast and efficient charging system powered by a lithium-ion battery or any other chemistry. With its advanced features such as preconditioning, cell balancing, and CC/CV charging, it is able to provide a highly reliable and safe charging system with minimal noise output. Furthermore, with adjustable charge current and voltages, fault protection and customizable charging profiles, it is easy to customize the system to meet the specific needs of the application.

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