ncp5392p ON Semiconductor, ncp5392p Datasheet - Page 28

• Manufacturer Part Number: ncp5392p
• Description: 2/3/4-phase Controller For Cpu Applications
• Manufacturer: ON Semiconductor

PH_PSI) are active in the emulation mode while other
phases are shed. Figure 19 indicates a PSI-on transition
from a 3-phase mode to a single phase mode. While staying
stable in PSI mode, the PWM signal of phase 1 will vary
from a mid-state level (1.5 V typical) to high level while
other phases all go to mid-state level. Vice verse, when PSI
signal goes high, the system will go back to the original
phase mode such as shown in Figure 20.
Figure 20. PSI turns off, CH1: PWM1, CH2: PWM2,
Figure 19. PSI turns on, CH1: PWM1, CH2: PWM2,
CH3: PWM3, CH4: PSI
CH3: PWM3, CH4: PSI
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NCP5392P
28
Auto-PSI Function:
monitor VID lines for transition into/out-of Low Power
States. Figure 21 to 24 describe the Auto-PSI function
during VID transitions, in one-phase and two-phase
operation respectively.
Figure 21. 10 A Load, VID Down, into PSI (One Phase)
Figure 22. 10 A Load, VID Up, Out of PSI (One Phase)
In Auto-PSI mode (APSI_EN=1, PSI=1), the device will