A good PCB layout for the BQ24022DRCR involves placing the device close to the battery, using a solid ground plane, and keeping the input and output capacitors close to the device. Additionally, it's recommended to use a separate power plane for the input and output to minimize noise coupling.
The selection of external components such as the input and output capacitors, inductor, and diode depends on the specific application requirements. TI provides a component selection guide in the datasheet, and engineers can also use TI's WEBENCH online design tool to simplify the component selection process.
The BQ24022DRCR has a maximum junction temperature of 125°C. To ensure reliable operation, engineers should ensure good thermal design, including a heat sink or thermal pad, and follow the recommended PCB layout guidelines. Additionally, the device has built-in thermal protection, which will shut down the device if the junction temperature exceeds 150°C.
The BQ24022DRCR has built-in OVP and UVP features. For OVP, the device will shut down if the input voltage exceeds 6.5V. For UVP, the device will shut down if the input voltage falls below 2.5V. Engineers can also implement external OVP and UVP circuits using external components such as zener diodes and resistors.
The BQ24022DRCR is designed to meet CISPR 22 Class B EMI standards. To ensure EMI compliance, engineers should follow good PCB layout practices, use shielding, and add EMI filters as needed. Additionally, the device has built-in EMI reduction features such as spread-spectrum clocking and frequency dithering.
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BQ24022DRCR Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
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