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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 technology 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 facilitates IGBT short circuit protection. The open-drain outputs make easy for any interface from 3.3V to 15V. S
IR2175S Maximum Ratings
Symbol
Definition
Min.
Max.
Units
VS
High side offset voltage
-0.3
600
V
VBS
High side floating supply voltage
-0.3
25
VCC
Low side and logic fixed supply voltage
-0.3
25
VIN
Maximum input voltage between VIN+ and VIN-
-5
5
VPO
Digital PWM output voltage
COM -0.3
VCC +0.3
VOC
Overcurrent output voltage
COM -0.3
VCC +0.3
VIN-
VIN- input voltage (note 1)
VS -5
VB+ 0.3
dV/dt
Allowable offset voltage slew rate
-
50
V/ns
PD
Package power dissipation @ TA +25
8 lead SOIC
-
625
W
8 lead PDIP
-
1.0
RthJA
Thermal resistance, junction to ambient
8 lead SOIC
-
200
/W
8 lead PDIP
-
125
TJ
Junction temperature
-
150
TS
Storage temperature
-55
150
TL
Lead temperature (soldering, 10 seconds)
-
300
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