SLUUCF8 March   2021 TPS53676

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Features
  4. 3 Applications
  5. 4 System Description
    1. 4.1 Phase configuration selection
    2. 4.2 Jumper details
    3. 4.3 On-board load transient
  6. 5 Test Equipment
  7. 6 Test Procedure
    1. 6.1 Start-up Test
    2. 6.2 Shut down Test
    3. 6.3 Steady-state Test
    4. 6.4 Load Transient Test
    5. 6.5 Efficiency Plot
    6. 6.6 Bode plot
  8. 7 Fusion GUI
  9. 8 Evaluation Module (EVM) Hardware
  10. 9 Schematic and Bill of Materials
  11. 10Read This First
    1. 10.1 About This Manual
    2. 10.2 Glossary
    3. 10.3 Related Documentation
    4. 10.4 Support Resources

6.1 Start-up Test

Use the following procedure for the start-up test.

RAILA:

  1. Set the load current to 50 A.
  2. Make sure all default jumpers (J1 to J9) settings as shown in Table 4-3.
  3. Connect probes Enable (TP11), VOUTA (J15, BNC cable), PWM1 (TP31), and VOUT_A_RDY (TP22).
  4. Set the oscilloscope to: 500 μs/div.
  5. Set the trigger to channel 1 ‘Enable_A’ on the rising edge at about 1 V.
  6. Turn on the power supply (with the voltage set to 12 V and the current limit set to 10 A).
  7. Slide the enable switch ‘S1’ to the ON position.
GUID-20210305-CA0I-PFKM-TG75-Q3C5RB31DB92-low.jpgFigure 6-1 VOUTA Enable startup with TON delay=0ms

RAILB:

  1. Set the load current to 10 A.

  2. Make sure all default jumpers (J1 to J9) settings as shown in Table 4-3.

  3. Connect probes Enable_B (TP12), VOUTB (J16, BNC cable), BPWM1 (TP55) and VOUT_B_RDY (TP23).

  4. Set up the time / div on the oscilloscope to: 500 μs/div.

  5. Set the trigger to channel 1 ‘Enable_B’ on the rising edge at about 1 V.

  6. Turn on the power supply (with the voltage set to 12 V and the current limit set to 5 A).

  7. Slide the enable switch ‘S2’ to the ON position.

GUID-58AFE052-9828-4FD8-A473-768C9D02D79A-low.jpgFigure 6-2 VOUTB Enable startup with TON delay=0ms