SLVUC69 May   2021

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2Schematic
  4. 3General Configuration and Description
    1. 3.1 Physical Access
    2. 3.2 Adjusting the Switching Frequency
    3. 3.3 Adjusting the Current Limit Value
    4. 3.4 Adjusting the Cable Compensation Value
    5. 3.5 Test Setup
  5. 4Board Layout
  6. 5Bill of Materials

3.2 Adjusting the Switching Frequency

If other frequencies are desired, within the frequency range of 400 kHz to 2.2 MHz, the Rt resistor (R12) value can be changed. Consult the data sheet for proper selection of the Rt resistor (R12). Change the inductor (L1) and the total output capacitance for proper control loop operation.

The RT/SYNC pin can also be used to synchronize the internal oscillator to an external clock. The TPS2583XAQ1EVM-147 allows users to synchronize the internal oscillator to both Lo-Z clock source and Hi-Z clock source by configuring R10, R12, and C15. Refer to the data sheet for detailed information.