Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the high-current paths short and wide, using a solid ground plane, and placing the device close to the battery. Additionally, ensure that the PCB layout is symmetrical to minimize electromagnetic interference (EMI).
The sense resistor value depends on the desired current sense accuracy and the maximum expected current. A smaller sense resistor value provides better accuracy but increases the power loss. A larger sense resistor value reduces power loss but decreases accuracy. TI recommends using a sense resistor value between 1 mΩ and 10 mΩ. Consult the datasheet for a detailed calculation formula.
The EN (Enable) pin is used to enable or disable the device. When EN is high, the device is enabled, and when EN is low, the device is disabled. This pin can be used to implement a low-power shutdown mode or to control the device's operation based on system requirements. Ensure that the EN pin is properly biased and decoupled to prevent unwanted device operation.
The BQ29717DSET has built-in OCP and SCP features. To handle OCP, set the OCP threshold using the OCP pin and ensure that the sense resistor value is correctly selected. For SCP, the device will automatically detect and respond to short-circuit conditions. Implement a suitable fault response mechanism in your system to handle OCP and SCP events, such as resetting the device or alerting the system.
The BQ29717DSET has a maximum junction temperature (TJ) of 150°C. Ensure that the device is properly heatsinked, and the PCB design allows for good thermal dissipation. Monitor the device's temperature using the TSD (Thermal Shutdown) pin, which will indicate an overtemperature condition. Implement thermal management techniques, such as reducing the device's power dissipation or using a heat sink, to ensure reliable operation.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
BQ29717DSET Overview
Use the download button to access the BQ29717DSET schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like BQ297,
or try a keyword search, such as Power Management Circuits
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.
