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IR2172 Datasheet

  • IR2172

  • LINEAR CURRENT SENSING IC

  • 125.74KB

  • 7頁

  • IRF

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ADVANCE INFORMATION
Data Sheet No. PD60176-C
IR2172
LINEAR CURRENT SENSING IC
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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
Product Summary
V
OFFSET
I
QBS
Vin
Gain temp.drift
fo
Overcurrent trip
signal delay
Overcurrent trip level
600Vmax
1mA
+/-260mVmax
20ppm/
o
C (typ.)
40kHz (typ.)
1.5usec (typ)
+/-260mV (typ.)
鈥?/div>
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. IR鈥檚 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.
Packages
8 Lead SOIC
8 Lead PDIP
16 Lead SOIC
(wide body)
Block Diagram
15V
PWM Output
GND
Overcurrent
VCC
PO
V+
V-
Up to 600V
IR2172
COM
OC
VB
VS
To Motor Phase

IR2172 產(chǎn)品屬性

  • 25

  • 集成電路 (IC)

  • PMIC - 穩(wěn)流/電流管理

  • -

  • 電流感應(yīng)

  • -

  • -

  • 9.5 V ~ 20 V

  • 20mA

  • -40°C ~ 125°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-DIP

  • 管件

  • *IR2172

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