TIDT387 March 2024 LM25148-Q1 , LM74910-Q1 , TPS389006-Q1 , TPS62874-Q1 , TPS62875-Q1 , TPS62876-Q1 , TPS62877-Q1 , TPS746-Q1 , TPS7B69-Q1
3.4 Start-Up Sequence
Figure 3-78 to Figure 3-57 show the start-up waveforms of the converters at the corresponding input voltages and at various load conditions.
Figure 3-40 5V Pre-Regulator Start-Up, 13.5V Input, No Load
Figure 3-42 VCCINT - Core Rail Start-Up, 5V Input, 40A Constant-Resistance eLoad
Figure 3-44 VCCAUX Rail Start-Up (PMIC_Buck2), 5V Input, 1.1A Constant-Resistance eLoad
Figure 3-46 GTAVTT Rail Start-Up (PMIC_Buck4), 5V Input, 1.3A Constant-Resistance eLoad
Figure 3-48 GTAVCCAUX Rail Start-Up (LDO), 5V Input, 0.05A Resistor Load
Figure 3-50 Sequence Power-Up, Sequence Rails 1, 2, 3, and 4, PMIC nRSTOUT, No Load
Figure 3-52 Sequence Power-Down, Sequence Rails 6, 5, and 4, PMIC nRSTOUT, No Load
Figure 3-54 Sequence Power-Up, Sequence Rails 1, 2, 3, and 4, Discrete Vsupervisor nIRQ, No Load
Figure 3-56 Sequence Power-Down, Sequence Rails 6, 5, and 4, Discrete Vsupervisor nIRQ, No Load
Figure 3-41 5V Pre-Regulator Start-Up, 13.5V Input, 12A Constant-Current eLoad
Figure 3-43 VCCO Rail Start-Up (PMIC_Buck1), 5V Input, 3A Constant-Resistance eLoad
Figure 3-45 GTAVCC Rail Start-Up (PMIC_Buck3), 5V Input, 0.7A Constant-Resistance eLoad
Figure 3-47 GTAVCCAUX Rail Start-Up (LDO), 5V Input, No Load
Figure 3-49 System Start-Up Into No Load, 13.5V Input, +12Vin_Main, 12Vs, 5V Pre-Regulator, VCCO (PMIC Buck 1)
Figure 3-51 Sequence Power-Up, Sequence Rails 4, 5, and 6, PMIC nRSTOUT, No Load
Figure 3-53 Sequence Power-Down, Sequence Rails 4, 3, 2, and 1, PMIC nRSTOUT, No Load
Figure 3-55 Sequence Power-Up, Sequence Rails 4, 5, and 6, Discrete Vsupervisor nIRQ, No Load
Figure 3-57 Sequence Power-Down, Sequence Rails 4, 3, 2, and 1, Discrete Vsupervisor nIRQ, No Load