ISL6313B Datasheet, PDF (3/33 Pages) Intersil Corporation – Two-Phase Buck PWM Controller with Integrated MOSFET Drivers for Intel VR11 and AMD Applications

Block Diagram
ISL6313B
PGOOD
EN
RGND
OPEN SENSE
LINE PREVENTION
VSEN
UNDERVOLTAGE
DETECTION
LOGIC
OVERVOLTAGE
DETECTION
LOGIC
SOFT-START
AND
FAULT LOGIC
0.85V
POWER-ON
RESET
VCC
PVCC
APA
SS
MODE / DAC
SELECT
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
RGND
DVC
REF
FB
COMP
OFS
IOUT
DYNAMIC
VID
D/A
+
+_∑
x2
2kΩ
OCP
I_TRIP
E/A
OFFSET
x1
OCP
V_OCP
FS
I_AVG
ADAPTIVE PHASE
ALLIGNMENT
CIRCUITRY
CLOCK AND
MODULATOR
WAVEFORM
GENERATOR
MOSFET
DRIVER
BOOT1
UGATE1
PHASE1
LGATE1
FS
+_∑
-
+_∑
-
PWM1
PWM2
MOSFET
DRIVER
BOOT2
UGATE2
PHASE2
LGATE2
CHANNEL
DETECT
CHANNEL
CURRENT
I_AVG
1
BALANCE
N
CH2
CURRENT
SENSE
+
∑
+
CH1
CURRENT
SENSE
R_ISEN2
R_ISEN1
ISEN2-
ISEN2+
RSET
ISEN1+
ISEN1-
GND
3
FN6809.0
November 6, 2008