SLVUC18 November   2020 TPS25865-Q1

 

  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 Current Limit Value
    4. 3.4 Cable Compensation Value
    5. 3.5 Thermal Management
    6. 3.6 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 200 kHz to 800 kHz, the RFREQ (R6) resistor value can be changed. Consult the data sheet for proper selection of the RFREQ resistor. Change the inductor (L1) and the total output capacitance for proper control loop operation.

The FREQ/SYNC pin can also be used to synchronize the internal oscillator to an external clock. The TPS25865EVMQ1-141 allows users to synchronize the internal oscillator to both Lo-Z clock source and Hi-Z clock source. Refer to the data sheet for detailed information.