ncp5389 ON Semiconductor, ncp5389 Datasheet - Page 5

• 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 3. 2-Phase Application Schematic
VCC
ROSC
CVCC1
DRVON
ROSC2
SS
DGND
AGND
CS1N
CS2N
CS3N
CS1
CS2
CS3
ROSC2
COSC2
CSS
G1
G2
G3
http://onsemi.com
NCP5389
5
12 V_FILTER
12 V_FILTER
RT2 LOCATED NEAR OUTPUT INDUCTORS
4
3
2
VCC
OD
IN
NCP3418B
VCC
OD
IN
DRVH
PGND
DRVL
DRVH
PGND
DRVL
BST
BST
SW
SW
1
8
7
5
6
12 V_FILTER
12 V_FILTER
+
CPU GND