ncp5395t ON Semiconductor, ncp5395t Datasheet - Page 23

• Manufacturer Part Number: ncp5395t
• Description: 2/3/4-phase Controller With On Board Gate Drivers For Cpu Applications
• Manufacturer: ON Semiconductor

critical items, it should be placed as close as to the controller
IC. Another item is using a GND plane. Ground plane can
provide a good return path for gate drives for reducing the
ground noise. Therefore GND pin should be directly
connected to the ground plane and close to the low−side
5 and 12 Good
VOUT/DAC
VR_RDY
ENABLE
DRVON
12 V
5 V
1 ms − 20 ms
Rise Time
1 ms − 20 ms
Rise Time
12 V
1.25 V
1.25 V
VR11 Soft−start
Mode Latched
Calibration Time
Figure 6. VR11.1 Start Up Timing Diagram
3.5 ms
VID Not Valid
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MOSFET source pin. Also, the gate drive trace should be
considered. The gate drives has a high di/dt when switching,
therefore a minimized gate drives trace can reduce the di/dv,
raise and fall time for reduce the switching loss.
Slew Rate
Soft−start
1.10 V
500 ms
VID Captured
Slew Rate
VID Valid
Soft−start
500 ms
DAC Setting