SLVUBD4B January   2018  – October 2020 TPS27SA08

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Descriptions
    2. 1.2 Applications
    3. 1.3 Features
  3. 2HSS-MOTHERBOARDEVM Schematic
  4. 3Connections Descriptions
    1. 3.1 Connectors and Test Points
    2. 3.2 Jumpers
  5. 4HSS-MOTHERBOARDEVM EVM Assembly Drawings and Layout
  6. 5Current Limit
  7. 6Current Sense
  8. 7Transient Protection
  9. 8Soldering Down U2
  10. 9Bill of Materials
  11.   Revision History

6 Current Sense

High-accuracy current sensing allows real-time monitoring and more diagnostics without further calibration. A current mirror is used to source a 1/5000 of the load current on SNS pin. The 1-kΩ R1 resistor is connected to the SNS pin to convert the current source into a voltage:

VSNS = 1000 × IOUT / 5000

For multiple channel devices see the data sheet for the SELx configuration to know which channel is being monitored.
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