ISL6218_14 Datasheet, PDF (7/19 Pages) Intersil Corporation – Precision Single-Phase Buck PWM Controller for Intel Mobile Voltage Positioning IMVP-IV and IMVP-IV+

Block Diagram
VSEN PGOOD
ISL6218
EN
1.3V
+-
VDD
POWER-ON
RESET (POR)
+
OVP
-
CONTROL
AND
FAULT LOGIC
112% RISING
102% FALLING
88% RISING
84% FALLING
+-
UV
CLOCK AND
SAWTOOTH
GENERATOR
+
PWM
-
THREE-STATE
1.75V
PWM
VBAT
FSET
DACOUT
SOFT
EA+
32 COUNT
CLOCK
CYCLE
VSOFT _SOFT-
START
VID0
VID1
VID2
VID
VID3
D/A
VID4
VID5
COMP
FB
OCSET
STV
1.75V
DSV
DRSV
MUX
VCORE
REF
PHASE
LOGIC
+
E/A
-
I_DROOP
IOCSET ISEN
Σ
+-
OC
2µA
ISEN
0.435
0.5
SAMPLE
AND
HOLD
32 COUNT
CLOCK
CYCLE
CHANNEL
CURRENT
SENSE
VDDP
BOOT
UG
PHASE
VDDP
LG
VSSP
ISEN
DSEN DRSEN
VSS
7
FN9101.6
August 6, 2007