SLVAFM9 july   2023 LM139AQML-SP , LM4050QML-SP , TMP461-SP , TPS50601A-SP , TPS7A4501-SP , TPS7H1101A-SP , TPS7H2201-SP , TPS7H4001-SP

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1SpaceFibre and STAR-Tiger
  5. 2STAR-Tiger Power-Supply Design
    1. 2.1 Power Inputs
    2. 2.2 KU060 Power Rails
    3. 2.3 Power Sequence
    4. 2.4 Fault Protection
  6. 3Conclusion
  7. 4Acknowledgment

2.3 Power Sequence

A power sequencing circuit is used to determine the order of powering each group. For the KU060 FPGA, the following sequence is followed:

  • Group A, POLA, POLB, and POLC (VCORE0.95 V and MGT1.0 V), enabled when Vmain > a threshold voltage
  • Group B, POLD and POLE (MGT1.2 V and IO1.8 V), enabled when PGA is asserted, that is, POLA, POLB, and POLC have all reached close to their nominal voltage
  • Group C, POLF(IO3.3 V), enabled when PGB is asserted, that is, POLD and POLE have both reached close to their nominal voltage
  • A PGPOLx(H) signal is asserted by the power sequencing circuit when PGC is asserted, that is, when all the POL converters have reached and remain at close to their nominal voltages, the PGPOLx(H) signal is asserted.