ncp5389 ON Semiconductor, ncp5389 Datasheet - Page 3

• Manufacturer Part Number: ncp5389
• Description: 2/3 Phase Buck Controller For Vr11 Pentium Iv Processor Applications
• Manufacturer: ON Semiconductor

DIFFOUT
ROSC2
AGND
CS1N
CS2N
CS3N
VDRP
COMP
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
ROSC
VFB
CS1
CS2
CS3
VCC
ILIM
VS-
VS+
SS
EN
1.3 V
Oscillator
DAC
Amplifier
Gain = 6
Gain = 6
Gain = 6
VR11
DAC
Droop
+
+
+
-
-
-
Error Amp
1.3 V
Diff Amp
+
+
-
+ -
-
9.0 V
Figure 1. Simplified Block Diagram
+
-
http://onsemi.com
UVLO
NCP5389
3
DIFFOUT
Current Limit
1.3 V
+
-
Fault
+
-
+
-
+
-
OVER
NCP5389
3OFF
Fault Logic
3 Phase
Circuits
Monitor
Detect
and
Fault
ENB
ENB
ENB
DGND
DRVON
VR_RDY
G1
G2
G3