isl6308a Intersil Corporation, isl6308a Datasheet - Page 3

• Manufacturer Part Number: isl6308a
• Description: Three-phase Buck Pwm Controller With High Current Integrated Mosfet Drivers
• Manufacturer: Intersil Corporation

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