ISL6228_14 Datasheet, PDF (2/16 Pages) Intersil Corporation – High-Performance Dual-Output Buck Controller for Notebook Applications

Block Diagram
VIN2 FB2 VCC2 VCC1 FB1 VIN1
VO2
FSET2
EN2
BOOT2
UGATE2
PHASE2
PWM FREQUENCY
CONTROL
+
+
V_W
−
R
Q
PWM
S
V_R
+ ^VCOMP
10µA
+
g_m
+
g_m
+
C_R
−
100pF
DRIVER
POR
DIGITAL
SOFT-
START
EA
+
+
OVP
SHOOT THROUGH
PROTECTION
+
UVP
V_REF
V_REF
PWM FREQUENCY
CONTROL
10µA
+
g_m
+
g_m
+
C_R
−
+
V_W
+
−
PWM
R
Q
S
V_R
V_{COMP +}
100pF
EA
+
+
OVP
POR
DIGITAL
SOFT-
START
DRIVER
+
UVP
SHOOT THROUGH
PROTECTION
VO1
FSET1
EN1
BOOT1
UGATE1
PHASE1
LGATE2
DRIVER
+
OCP
10µA
10µA
+
OCP
DRIVER
LGATE1
+150°
OT
60Ω
90Ω
30Ω
30Ω
90Ω
60Ω
+150°
OT
PVCC2
PGND2
PGOOD2
PACKAGE
BOTTOM
OCSET2 GND OCSET1
FIGURE 1. SCHEMATIC BLOCK DIAGRAM
PGOOD1
PGND1
PVCC1