BQ24315DSGR datasheet by Texas Instruments

BQ24315DSGR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the high-current paths short and wide, and use thermal vias to dissipate heat.
• How do I ensure the device doesn't overheat during high-current charging?
  Implement thermal monitoring and protection using the device's built-in thermal sensing and shutdown features. Ensure good airflow and consider adding a heat sink if necessary.
• What is the maximum cable resistance supported by the BQ24315DSGR?
  The device can support up to 500mΩ of cable resistance. However, it's recommended to keep the cable resistance as low as possible to minimize power loss and ensure reliable charging.
• Can I use the BQ24315DSGR for both USB-C and legacy USB charging?
  Yes, the device supports both USB-C and legacy USB charging. It can automatically detect the type of charger and negotiate the correct charging protocol.
• How do I configure the device for different charging profiles (e.g., fast charging, trickle charging)?
  Use the device's I2C interface to configure the charging profile. The BQ24315DSGR has built-in support for various charging profiles, including USB-IF, Qualcomm QuickCharge, and others.