IR2172 International Rectifier, IR2172 Datasheet

IC CURRENT SENSING LINEAR 8-DIP

IR2172

Manufacturer Part Number
IR2172
Description
IC CURRENT SENSING LINEAR 8-DIP
Manufacturer
International Rectifier
Datasheet

Specifications of IR2172

Function
Current Sense
Voltage - Input
9.5 ~ 20 V
Current - Output
20mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Accuracy
-
Sensing Method
-
Other names
*IR2172

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Features
Description
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 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.
IR2172 is the monolithic current sensing IC designed
Block Diagram
Floating channel up to +600V
Monolithic integration
Linear current feedback through shunt resistor
Direct digital PWM output for easy interface
Low I
Independent fast overcurrent trip signal
High common mode noise immunity
Input overvoltage protection for IGBT short circuit
Open Drain outputs
condition
QBS
allows the boot strap power supply
PWM Output
Overcurrent
G N D
15V
C O M
V C C
P O
O C
IR2172
LINEAR CURRENT SENSING IC
V+
V B
V S
V-
ADVANCE INFORMATION
Packages
Product Summary
Overcurrent trip level
Overcurrent trip
8 Lead SOIC
Gain temp.drift
signal delay
V
OFFSET
I
QBS
V in
f o
Up to 600V
Data Sheet No. PD60176-C
IR2172
+/-260mVmax
20ppm/
1.5usec (typ)
To Motor Phase
40kHz (typ.)
+/-260mV (typ.)
600Vmax
16 Lead SOIC
(wide body)
1mA
8 Lead PDIP
o
C (typ.)

Related parts for IR2172

IR2172 Summary of contents

Page 1

... 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. IR’ ...

Page 2

... IR2172 Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. ...

Page 3

... Min. Typ. Max. Units Test Conditions — 40 — 500 — 7 — -10 IR2172 260 mV — — (Note — 167 %/V max gain error=5% (Note 2) o — ppm µ 600V ...

Page 4

... IR2172 AC Electrical Characteristics cont 15V, unless otherwise specified Symbol Definition Proagation delay characteristics tdoc Propagation delay time of OC twoc Low true pulse width of OC Timing Waveforms PO PO Carrier Frequency = Figure 1 Output waveform Application Hint: Temperature drift of the output carrier frequency can be cancelled by measuring both a PWM period and the on-time of PWM (Duty) at the same time ...

Page 5

... Negative sense input IN- V High side supply B V High side return S PO Digital PWM output Overcurrent output (negative logic) OC N.C. No connection Lead Assignment VCC VIN VIN lead SOIC www.irf.com ADVANCE INFORMATION VCC VIN VIN lead PDIP IR2172 VCC VIN VIN lead SOIC ...

Page 6

... IR2172 Case Outline - 8 Lead SOIC 6 ADVANCE INFORMATION 8 Lead PDIP (MS-012AA) 01-0021 09 01-3003 01 www.irf.com ...

Page 7

... IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 IR EUROPEAN REGIONAL CENTRE: 439/445 Godstone Rd., Whyteleafe, Surrey CR3 0BL, United Kingdom www.irf.com ADVANCE INFORMATION 16 Lead SOIC (wide body) Data and specifications subject to change without notice. 6/20/2000 IR2172 01-3014 03 Tel (0) 20 8645 8000 7 ...

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