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| ISL2111_14 Datasheet, PDF (3/13 Pages) Intersil Corporation – 100V, 3A/4A Peak, High Frequency Half-Bridge Drivers | |||
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Functional Block Diagram
ISL2110, ISL2111
HB
VDD
UNDER
VOLTAGE
LEVEL SHIFT
HO
DRIVER
HS
HI
ISL2111
UNDER
VOLTAGE
ISL2111
LI
VSS
LO
DRIVER
EPAD (DFN Package Only)
*EPAD = Exposed Pad. The EPAD is electrically isolated from all other pins. For
best thermal performance connect the EPAD to the PCB power ground plane.
+12V
PWM
+48V
ISL2110
ISL2111
SECONDARY
CIRCUIT
+12V
ISOLATION
FIGURE 1. TWO-SWITCH FORWARD CONVERTER
+48V
SECONDARY
CIRCUIT
PWM
ISL2110
ISL2111
ISOLATION
FIGURE 2. FORWARD CONVERTER WITH AN ACTIVE-CLAMP
3
FN6295.6
March 8, 2012
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