SLVAF13 November   2020 LM5069 , TPS1663 , TPS2663

 

  1.   Trademarks
  2. 1Introduction
  3. 2Parallel Configuration
  4. 3Design Example
    1. 3.1 Design Requirements
    2. 3.2 Detailed Design Procedure
    3. 3.3 Performance Results
  5. 4Comparison With the Hot-Swap and ORing Controller Solution
  6. 5TPS16630 Parallel Circuit Configuration
  7. 6Conclusion
  8. 7References

1 Introduction

The TPS2663 device incorporates protection features such as inrush current management, adjustable overcurrent limit, short-circuit protection, overvoltage and input reverse polarity protection. Figure 1-1 shows an application schematic of the TPS26631 feeding a downstream DC-DC converter in a PLC system. The capacitor CdVdT on the dVdT pin sets the output voltage slew-rate and hence the inrush current level where as the resistor RILIM sets the current limit (ILIM) which the device needs to limit to under fault conditions. The device offers a B-FET driver to control an external N-channel FET ‘Q1’ for reverse current and reverse polarity protection which simplifies designs requiring class-A performance during system tests like IEC61000-4-5 surge tests as well as input supply brown-out tests.

The maximum current the TPS2663 can support is up to 6 A. However the device can be used in parallel configuration with multiple TPS2663 devices to achieve higher output currents which is often required in many industrial systems. This report presents how the TPS2663 can be used in parallel operation to achieve higher output currents as well as to demonstrate the performance benefits it brings to the system with its integrated protection functions.

Figure 1-1 Application Schematic of TPS26631 for Power Path Protection in a PLC System