SLVUCS1A july   2023  – august 2023 TPS7H2140-SEP

 

  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 Connection Descriptions
      1. 2.1.1 Connectors
    2. 2.2 Variable Resistors for CS and CL
      1. 2.2.1 Current Sense Resistor
      2. 2.2.2 Current Limit Resistors
    3. 2.3 Open-Load Detection Pull-Up Resistors
    4. 2.4 Connecting Channels In Parallel
  7. 3Implementation Results
    1. 3.1 Separated Output Results
      1. 3.1.1 Power Up and Power Down
      2. 3.1.2 Enable and Disable
      3. 3.1.3 Current Sensing
      4. 3.1.4 Load Step Effects Across Output Channels
      5. 3.1.5 Overcurrent Protection
    2. 3.2 Modified Configuration Results
      1. 3.2.1 Short-to-GND (Fast-Trip) Overcurrent
  8. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials
  9. 5Additional Information
    1.     Trademarks
  10. 6Related Documentation
  11. 7Revision History

2.4 Connecting Channels In Parallel

The TPS7H2140EVM provides the ability to connect output channels in parallel for higher current applications than one channel can allow. Channels can be connected in parallel by soldering 0 Ω resistors to pads on the PCB. Output channels are connected together by soldering 4, 0 Ω resistors on the bottom layer of the PCB. For each channel being connected, TI recommends to solder an additional 0 Ω resistor on the top layer to synchronize the enable signals for each of the bonded channels.

Table 2-2 lists which pads have 0 Ω resistors attached to enable parallel channel operation for each 2-channel combination.

Table 2-2 Output Channel Bonding Connections
Channels To Bond Reference Designators
CH1 - CH2 R12 (EN), R16, R19, R22, R25
CH2 - CH3 R13 (EN), R18, R21, R24, R27
CH3 - CH4 R14 (EN), R17, R20, R23, R26

Any number of adjacent channels can be connected together and channels combinations are not limited to the pairs shown in Table 2-2.

When a 0 Ω resistor is connected between the enable signals of two or more channels, TI recommends to use only one enable jumper to control the enable status for each bonded channel. Remove the other enable jumpers for the bonded channel set.