Data Sheet No. PD60208 Rev. E
IR2175(S) & (PbF)
LINEAR CURRENT SENSING IC
Features
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Floating channel up to +600V
Monolithic integration
Linear current feedback through shunt resistor
Direct digital PWM output for easy interface
Low I
QBS
allows the boot strap power supply
Independent fast overcurrent trip signal
High common mode noise immunity
Input overvoltage protection for IGBT short circuit
condition
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Open Drain outputs
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Also available LEAD-FREE
Product Summary
V
OFFSET
I
QBS
Vin
Gain temp.drift
fo
Overcurrent trip
signal delay
Overcurrent trip level
600Vmax
2mA
+/-260mVmax
20ppm/
o
C (typ.)
130kHz (typ.)
2µsec (typ)
+/-260mV (typ.)
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. IR’s 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
Packages
8 Lead PDIP
IR2175
8 Lead SOIC
IR2175S
Block Diagram
Up to 600V
15V
PWM Output
GND
Overcurrent
VCC
PO
V+
VS
IR2175
COM
OC
VB
To Motor Phase
(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.
IRF [ INTERNATIONAL RECTIFIER ]
