SLVUCS8 April   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 EVM Connectors
      1. 2.1.1 EVM Test Points
      2. 2.1.2 EVM Jumpers
    2. 2.2 EVM Setup and Operation
      1. 2.2.1 Capacitor Sense Time Delay
      2. 2.2.2 Capacitor Reset Time Delay
      3. 2.2.3 Input Power (VDD)
  7. 3Hardware Design Files
    1. 3.1 TPS3842EVM Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials
  8. 4Additional Information
    1. 4.1 Trademarks
  9. 5Related Documentation

2.1.2 EVM Jumpers

Table 3-2 lists the jumpers on the TPS3842EVM. As ordered, the EVM has twelve jumpers installed.

Table 2-2 Jumpers
JumperDefault ConnectionDescription
J1Pin7 and 8Selectable jumper to pick hysteresis level. The resistors are configured to work with the 12V jumper selection on J5. Put the jumper on USER to use an external resistor to modulate hysteresis.
J2Pin1 and 2 C2 (100pF)Selectable jumper to pick capacitor time reset delay. These capacitors range from 100pF to 1uF. Put the jumper on USER to use an external capacitor to modulate the capacitor time reset delay.
J3Pin1 and 2Selectable jumper to pick between having RP pulled up to VDD or an external supply (EXT2). Connecting the jumper between the middle pin and VDD pulls RP up to VDD. Connecting the jumper between the middle pin and EXT2 pulls RP up to EXT2.
J4Pin1 and 2 C6 (100pF)Selectable jumper to pick capacitor time sense delay. These capacitors range from 100pF to 1uF. Put the jumper on USER to use an external capacitor to modulate the capacitor time sense delay.
J5Closed on R9 (3.3V)Selectable jumper to pick sense voltage. These resistors, in conjunction with the R5 resistors, allow sense to detect invalid voltage conditions at 3.3V, 5V, 12V, and 24V.
J6Pin1 and 2Selectable jumper to pick between using the included resistors of R5 to R9 to set sense voltage to using a user defined resistor divider (Ra and Rb) to set sense voltage. Connecting the jumper between the left and middle pin also allows sense to be decoupled from VDD, provided that the jumper on J7 is also between the left and middle pin.
J7OpenSelectable jumper to pick between using the IC to sense an invalid condition on VDD or an external power supply. Connecting the jumper between the middle pin and VDD allows the user defined resistor divider (Ra and Rb) to set the invalid sense condition based on VDD. Connecting the jumper between the middle pin and EXT allows the user defined resistor divider to set the invalid sense condition based on EXT. When connecting the jumper between the middle pin and VDD, J6 must be left unconnected. J7 can be left disconnected if only the predefined resistors on J6 are to be used to detect invalid voltage on sense.