ncp5381a ON Semiconductor, ncp5381a Datasheet - Page 6

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

VID_SEL
VR_RDY
VR_HOT
VR_FAN
VR_EN
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VTT
RISO1
VCCP
VSSP
680 W PULLUPS
CFB1
CD1
CF
RT2
RFB
RDRP
CH
RFB1
RD1
RF
RISO2
RT2 LOCATED NEAR OUTPUT INDUCTORS
10
37
40
39
16
15
17
19
20
18
2
3
4
5
6
7
8
9
1
RVCC
U21
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VR10/11
EN
VR_RDY
VR_HOT
VR_FAN
VS−
VS+
DIFFOUT
VFB
VDRP
COMP
ILIM
Figure 4. Application Schematic for Two Phases
13
RLIM1
RLIM2
NCP5381A
+12 V
36
VCC
ROSC
CVCC1
12
DRVON
SS
DGND
AGND
VREF
CS1N
CS2N
CS3N
CS4N
NTC
CS1
CS2
CS3
CS4
11
CSS
G1
G2
G3
G4
35
29
14
34
38
30
22
21
31
24
23
32
26
25
33
28
27
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RNTC1
6
RNTC2
RT1
12 V_FILTER
12 V_FILTER
4
3
2
4
3
2
C1
VCC
OD
IN
VCC
OD
IN
NCP3418B
DRVH
PGND
DRVH
PGND
DRVL
DRVL
BAT54HT1
BST
BST
SW
SW
D1
NTD85N02RT4
1
8
7
5
1
8
7
5
6
6
C3
R2
12 V_FILTER
12 V_FILTER
C2
NTD60N02RT4
RS1
C4
+
CS1
L1
CPU GND