ncp5381a ON Semiconductor, ncp5381a Datasheet - Page 3

• Manufacturer Part Number: ncp5381a
• Description: 2/3/4 Phase Buck Controller For Vr10 And Vr11 Pentium Iv Processor Applications
• Manufacturer: ON Semiconductor

DIFFOUT
VR10/11
AGND
CS1N
CS2N
CS3N
CS4N
VDRP
COMP
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
ROSC
VFB
CS1
CS2
CS3
CS4
VCC
ILIM
VS−
VS+
SS
EN
1.3 V
Oscillator
DAC
VR10/11
Amplifier
Gain = 6
Gain = 6
Gain = 6
Gain = 6
DAC
Droop
+
+
+
+
−
−
−
−
Error Amp
1.3 V
Diff Amp
+
+
+
−
−
−
9.0 V
Figure 1. Simplified Block Diagram
+
−
http://onsemi.com
UVLO
NCP5381A
3
DIFFOUT
Current Limit
1.3 V
+
−
Fault
+
−
+
−
+
−
+
−
OVER
4OFF
Fault Logic
3 Phase
+
−
+
−
Circuits
Monitor
Detect
and
Fault
ENB
ENB
ENB
ENB
VR_FAN
VR_HOT
VREF
NTC
DGND
DRVON
VR_RDY
G1
G2
G3
G4
NTC