Datasheet

ISOLATION
ISO5500
V
CC1
GND1
ISOLATION
3 V - 5.5 V
ISO5500
V
IN+
V
IN-
PWM
V
IN-
V
CC1
V
IN+
V
CC1
GND1
V
IN+
V
IN-
3 V - 5.5 V
PWM
V
IN-
V
IN+
V
OUT
GND1
V
OUT
V
CC1
GND1
V
C
V
CC2
V
E
V
EE-P
ISOLATION
3 V - 5.5 V
V
C
V
CC2
V
E
ISOLATION
ISO5500 ISO5500
V
CC1
GND1
Power Device
Common
15V 15 V-30 V
0 V-15 V
3 V - 5.5 V
+15 V
0-(-15 V)
+15 V
-15 V
V
EE-L
V
EE-P
V
EE-L
0 V-15 V
Power Device
Common
ISO5500
www.ti.com SLLSE64C –SEPTEMBER 2011–REVISED JUNE 2013
DEVICE INFORMATION
POWER SUPPLIES
V
CC1
and GND1 are the power supply input and output for the input side of the ISO5500. The supply voltage at
V
CC1
can range from 3 V up to 5.5 V with respect to GND1, thus supporting the direct interface to state-of-the-art
3.3 V low-power controllers as well as legacy 5 V controllers.
V
CC2
, V
EE-P
and V
EE-L
are the power supply input and supply returns for the output side of the ISO5500. V
EE-P
is
the supply return for the output driver and V
EE-L
is the return for the logic circuitry. With V
EE-P
as the main
reference potential, V
EE-L
should always be directly connected to V
EE-P
. The supply voltage at V
CC2
can range
from 15 V up to 30 V with respect to V
EE-P
.
A third voltage input, V
E
, serves as reference voltage input for the internal UVLO and DESAT comparators. V
E
also represents the common return path for the gate voltage of the external power device. The ISO5500 is
designed for driving MOSFETs and IGBTs. Because MOSFETs do not require a negative gate-voltage, the
voltage potential at V
E
with respect to V
EE-P
can range from 0 V for MOSFETs and up to 15 V for IGBTs.
Figure 55. Power Supply Configurations
The output supply configuration on the left uses symmetrical ±15 V supplies for V
CC2
and V
EE-P
with respect to
V
E
. This configuration is mostly applied when deriving the output supply from the input supply via an isolated DC-
DC converter with symmetrical voltage outputs. The configuration on the right, having both supplies referenced to
V
EE-P
, is found in applications where the device output supply is derived from the high-voltage IGBT supplies.
CONTROL SIGNAL INPUTS
The two digital, TTL control inputs, V
IN+
and V
IN–
, allow for inverting and non-inverting control of the gate driver
output. In the non-inverting configuration V
IN+
receives the control input signal and V
IN–
is connected to GND1. In
the inverting configuration V
IN–
is the control input while V
IN+
is connected to V
CC1
.
Figure 56. Non-inverting (left) and Inverting (right) Input Configurations
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