ISL6306 Datasheet, PDF (3/33 Pages) Intersil Corporation – 4-Phase PWM Controller with 8-Bit DAC Code Capable of Precision rDS ON or DCR Differential Current Sensing

ISL6306CR Block Diagram
VDIFF VR_RDY
RGND
x1
VSEN
OVP
+175mV
SS
SOFT-START
AND
FAULT LOGIC
ISL6306
VCC
CLOCK AND
SAWTOOTH
GENERATOR
POWER-ON
RESET (POR)
0.875V
EN_VTT
0.875V
EN_PWR
THREE-STATE
FS
∑
PWM
PWM1
OFS
REF
DAC
VRSEL
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
COMP
FB
IDROOP
OFFSET
DYNAMIC
VID
D/A
VR_HOT
VR_FAN
THERMAL
MONITORING
TM
∑
PWM
PWM2
∑
PWM
PWM3
∑
PWM
E/A
CHANNEL
CURRENT
BALANCE
CHANNEL
DETECT
I_TRIP
OC
1
N
∑
I_AVG
THERMAL
COMPENSATION
GAIN
TEMPERATURE
COMPENSATION
CHANNEL
CURRENT
SENSE
PWM4
ISEN1+
ISEN1-
ISEN2+
ISEN2-
ISEN3+
ISEN3-
ISEN4+
ISEN4-
TCOMP
GND
3
FN9226.1
May 5, 2008