SLVAFO4 august   2023 TPS61299

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Overview
  5. 2Load Connected to Input Voltage
    1. 2.1 Body Diode Pass (TPS61288)
    2. 2.2 Force Pass Through (TPS61253)
    3. 2.3 Bypass (TPS61291)
    4. 2.4 Summary
  6. 3Load Disconnected to Input Voltage
    1. 3.1 Synchronous HSD FET With Switchable Body Diode (TPS61299)
    2. 3.2 Extra ISO FET to Cut-Off Leakage Path
  7. 4Summary
  8. 5References

3 Load Disconnected to Input Voltage

Load disconnection function is important when the load is not powered by the input voltage through the boost converter during shut down and the system is sensitive to shutdown power loss. The load disconnection function also allows for output short protection and minimizes the inrush current at start-up.

The device realizes true disconnection or true shutdown when a MOSFET in the path from the input to the load is fully turned off (including body diode).