TL7726QDR datasheet by Texas Instruments

TL7726QDR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TL7726QDR to minimize EMI?
  A good PCB layout for the TL7726QDR involves keeping the input and output traces separate, using a solid ground plane, and placing the input and output capacitors close to the device. Additionally, it's recommended to use a shielded inductor and to keep the switching node (pin 5) away from sensitive analog circuits.
• How do I choose the right inductor value for my application?
  The inductor value depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor value calculation formula provided in the datasheet. Additionally, consider the inductor's saturation current, DC resistance, and core material when selecting an inductor.
• What is the maximum ambient temperature range for the TL7726QDR?
  The TL7726QDR is rated for operation from -40°C to 125°C. However, the device's performance and reliability may degrade at extreme temperatures. It's essential to consider the thermal design and heat dissipation in your application.
• Can I use the TL7726QDR in a high-reliability or automotive application?
  Yes, the TL7726QDR is qualified for automotive and high-reliability applications. It meets the AEC-Q100 standard and is manufactured using a robust process. However, it's essential to follow the recommended design and layout guidelines to ensure the device operates within its specifications.
• How do I troubleshoot issues with the TL7726QDR, such as oscillations or instability?
  To troubleshoot issues with the TL7726QDR, start by verifying the PCB layout and component selection. Check for proper decoupling, correct inductor selection, and ensure that the input and output capacitors meet the recommended specifications. Use an oscilloscope to measure the output voltage and current, and check for signs of oscillation or instability.