ISL6308A Datasheet, PDF (3/28 Pages) Intersil Corporation – Three-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers

Block Diagram
ICOMP DROOP OCSET
ISL6308A
PGOOD OVP
ENLL
ISUM
IREF
ISEN AMP
RGND
VSEN
VDIFF
x1
x1
UVP
OVP
OVP
REF1
REF0
DAC
+150mV
x 0.82
DAC
100µA
OC
+1V
SOFT-START
AND
FAULT LOGIC
0.2V
CLOCK AND
SAWTOOTH
GENERATOR
∑
PWM1
∑
PWM2
∑
PWM3
0.66V
POWER-ON
RESET
GATE
SHOOT-
CONTROL THROUGH
LOGIC PROTECTION
GATE
SHOOT-
CONTROL THROUGH
LOGIC PROTECTION
CHANNEL
DETECT
REF
FB
COMP
OFST
OFFSET
CHANNEL
1
E/A
CURRENT
N
BALANCE
∑
CHANNEL
CURRENT
SENSE
ISEN1 ISEN2 ISEN3
GATE
SHOOT-
CONTROL THROUGH
LOGIC PROTECTION
GND
3
VCC
PVCC1
BOOT1
UGATE1
PHASE1
LGATE1
FS
PVCC2
BOOT2
UGATE2
PHASE2
LGATE2
2PH
3PH
PVCC3
BOOT3
UGATE3
PHASE3
LGATE3
FN6669.0
September 9, 2008