Instructions for UCC28070A

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the power supply.
   • Ensure the input voltage is within the specified range (9V to 100V).

2. Output Configuration:

   • Set the output voltage (VOUT) to the desired level using the feedback resistor network.
   • The typical output voltage is 5V, but it can be adjusted by changing the feedback resistors.

3. Frequency Setting:

   • The switching frequency (fSW) can be set by selecting the appropriate external components.
   • The typical switching frequency is 100kHz.

4. Current Limiting:

   • Use the current-sense resistor to set the maximum output current (IOUT).
   • The typical value for IOUT is 1A.

5. Protection Features:

   • The device includes under-voltage lockout (UVLO) and over-voltage protection (OVP).
   • UVLO threshold is typically 8V to 10V.
   • OVP threshold is typically 6.5V to 7.0V.

6. Thermal Management:

   • Monitor the operating temperature (TOPR) to ensure it stays within the -40°C to 125°C range.
   • The thermal shutdown threshold (TSD) is typically 160°C to 170°C.

7. Start-Up Sequence:

   • The start-up time (tSTART) is typically 10ms when the input voltage is 12V and the output voltage is 5V.

8. Layout Considerations:

   • Place the power components and ground plane close to the UCC28070A to minimize noise and improve performance.
   • Use short and wide traces for high-current paths to reduce resistance and inductance.

9. Testing and Debugging:

   • Verify the output voltage and current during initial testing.
   • Check the switching frequency and duty cycle using an oscilloscope.
   • Ensure all protection features are functioning correctly.

10. Storage and Handling:

    • Store the device in a dry, cool place to prevent damage from moisture.
    • Handle with care to avoid static discharge, which can damage the device.

For more detailed information, refer to the datasheet and application notes provided by Texas Instruments.