UC3845BD1013TR datasheet by STMicroelectronics

UC3845BD1013TR Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the UC3845BD1013TR?
  The maximum operating frequency of the UC3845BD1013TR is 500 kHz.
• How do I ensure stable operation of the UC3845BD1013TR in my design?
  To ensure stable operation, ensure that the input voltage is within the recommended range, decouple the power supply with a capacitor, and use a stable oscillator circuit.
• What is the purpose of the soft-start pin (SS) on the UC3845BD1013TR?
  The soft-start pin (SS) is used to gradually increase the output voltage of the converter during startup, reducing inrush currents and electromagnetic interference (EMI).
• Can I use the UC3845BD1013TR in a synchronous rectification topology?
  Yes, the UC3845BD1013TR can be used in a synchronous rectification topology, but it requires additional external components and careful design to ensure proper operation.
• How do I calculate the minimum and maximum duty cycle of the UC3845BD1013TR?
  The minimum duty cycle is typically 0.02, and the maximum duty cycle is typically 0.98. These values can be calculated using the formulas provided in the datasheet or application notes.