ADVANCE INFORMATION Data Sheet No. PD60176-C
IR2172
Block Diagram
Packages
Product Summary
V
OFFSET
600Vmax
I
QBS
1mA
V
in
+/-260mVmax
Gain temp.drift 20ppm/
o
C (typ.)
f
o
40kHz (typ.)
Overcurrent trip
1.5usec (typ)
signal delay
Overcurrent trip level +/-260mV (typ.)
LINEAR CURRENT SENSING IC
16 Lead SOIC
(wide body)
8 Lead PDIP
8 Lead SOIC
VB
V+
V-
VS
VCC
PO
COM
IR2172
GND
15V
To Motor Phase
PWM Output
Up to 600V
OC
Overcurrent
Features
" 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
"
Open Drain outputs
Description
IR2172 is the 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 technol-
ogy is implemented to enable the high bandwidth signal
processing. The output format is discrete PWM to elimi-
nate need for the A/D input interface. The dedicated
overcurrent trip (OC) signal facilitates IGBT short cir-
cuit protection. The OC output pulse can be programmed
by the external resistor and capacitor. The open-drain
outputs make easy for any interface from 3.3V to 15V.
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Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件
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