ncp5389 ON Semiconductor, ncp5389 Datasheet - Page 4

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

VR_RDY
VR_EN
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VTT
RISO1
VCCP
VSSP
CFB1
CD1
CF
680 W PULLUPS
RFB
RDRP
RT2
CH
RFB1
RD1
RF
RISO2
RVCC
U1
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
EN
VR_RDY
VS-
VS+
DIFFOUT
VFB
VDRP
COMP
ILIM
RLIM1
RLIM2
NCP5389
+12 V
Figure 2. 3-Phase Application Schematic
VCC
ROSC
CVCC1
DRVON
ROSC2
SS
DGND
AGND
CS1N
CS2N
CS3N
COSC2
CS1
CS2
CS3
ROSC2
CSS
G1
G2
G3
http://onsemi.com
NCP5389
4
12 V_FILTER
12 V_FILTER
12 V_FILTER
RT2 LOCATED NEAR OUTPUT INDUCTORS
NCP3418B
VCC
OD
IN
VCC
OD
IN
VCC
OD
IN
DRVH
PGND
DRVH
PGND
DRVL
DRVL
DRVH
PGND
DRVL
BST
BST
BST
SW
SW
SW
12 V_FILTER
12 V_FILTER
12 V_FILTER
+
CPU GND