ISL6561 Datasheet, PDF (3/26 Pages) Intersil Corporation – Multi-Phase PWM Controller with Precision Rds(on) or DCR Differential Current Sensing for VR10.X Application

ISL6561CR Block Diagram
ISL6561
RGND
VSEN
VDIFF PGOOD
OVP
S ^{OVP R}
x1
LATCH
Q
VCC
POWER-ON
RESET (POR)
ENLL
1.24V
EN
OVP
+200mV
SOFT START
AND
FAULT LOGIC
CLOCK AND
SAWTOOTH
GENERATOR
∑
PWM
THREE-STATE
FS
PWM1
OFS
OFFSET
∑
PWM
PWM2
REF
DAC
VID4
VID3
VID2
VID1
VID0
VID12.5
COMP
FB
IDROOP
TCOMP
DYNAMIC
VID
D/A
T
∑
PWM
PWM3
∑
PWM
E/A
I_TRIP
OC
∑
I_TOT
CHANNEL
CURRENT
BALANCE
CHANNEL
DETECT
SAMPLE
&
HOLD
CHANNEL
CURRENT
SENSE
PWM4
ISEN1+
ISEN1-
ISEN2+
ISEN2-
ISEN3+
ISEN3-
ISEN4+
ISEN4-
GND
3
FN9098.5
May 12, 2005