SLUU180B January   2022  – February 2022 TPS40070 , TPS40071

 

  1.   Trademarks
  2. 1Introduction
  3. 2Description
  4. 3Schematic
    1. 3.1 Output Filter Components
    2. 3.2 MOSFET Selection
    3. 3.3 Frequency Feedforward Resistor Selection
    4. 3.4 Output Voltage Setpoint
    5. 3.5 Short Circuit Protection Resistor Selection
    6. 3.6 Miscellaneous Parts
    7. 3.7 Control Loop Compensation
  5. 4Test Setup
  6. 5Results
    1. 5.1 Control Loop Characteristics
  7. 6Assembly Drawing and PCB Layout
  8. 7List of Materials
  9. 8Reference
  10. 9Revision History

3.6 Miscellaneous Parts

Locations for R4 and R11 are present but shorted out in this EVM. The locations were kept to allow evaluation of other MOSFETs and snubbers. C13 is populated with a 2.2 nF to shunt some of the high frequency ringing on the switch node to ground. Since this EVM has a start-up voltage below 6.2 V, R10 is populated with 330 kΩ as required in the data sheet.