Data Sheet No. PD60208 Rev. E
IR2175(S) & (PbF)
Block Diagram
Packages
Product Summary
V
OFFSET
600Vmax
I
QBS
2mA
V
in
+/-260mVmax
Gain temp.drift 20ppm/
o
C (typ.)
f
o
130kHz (typ.)
Overcurrent trip
2祍ec (typ)
signal delay
Overcurrent trip level +/-260mV (typ.)
LINEAR CURRENT SENSING IC
8 Lead PDIP
IR2175
8 Lead SOIC
IR2175S
Features
" Floating channel up to +600V
" Monolithic integration
" Linear current feedback through shunt resistor
" Direct digital PWM output for easy interface
"
Low IQBS allows the boot strap power supply
"
Independent fast overcurrent trip signal
"
High common mode noise immunity
"
Input overvoltage protection for IGBT short circuit
condition
"
Open Drain outputs
"
Also available LEAD-FREE
Description
The IR2175 is a monolithic current sensing IC designed
for motor drive applications. It senses the motor phase
current through an external shunt resistor, converts from
analog to digital signal, and transfers the signal to the
low side. IRs proprietary high voltage isolation tech-
nology is implemented to enable the high bandwidth
signal processing. The output format is discrete PWM
to eliminate need for the A/D input interface for the
IR2175. The dedicated overcurrent trip (OC) signal fa-
cilitates IGBT short circuit protection. The open-drain
outputs make easy for any interface from 3.3V to 15V. S
(Refer to Lead Assignments for cor-
rect pin configuration). This/These
diagram(s) show electrical connec-
tions only. Please refer to our Appli-
cation Notes and DesignTips for
proper circuit board layout.
VB
V+
VS
VCC
PO
COM
IR2175
GND
15V
To Motor Phase
PWM Output
Up to 600V
OC
Overcurrent
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