3

IR2171/IR2172

www.irf.com

Nominal input voltage range before saturation

-260

—

260

Overcurrent trip positive input voltage

—

260

—

Overcurrent trip negative input voltage

—

-260

—

Input offset voltage

-10

0

10

Input offset voltage temperature drift

—

25

—

G

157

162

167

%/V

max gain error=5%

(Note 2)

Gain temperature drift

—

20

—

ppm/

Offset supply leakage current

—

—

50

µA

—

1

2

—

—

0.5

LIN

Linearity (duty cycle deviation from ideal linearity

—

0.5

1

%

curve)

Linearity temperature drift

—

.005

—

%/

Digital PWM output sink current

20

—

—

2—

—

OC output sink current (IR2172)

10

—

—

1—

—

DC Electrical Characteristics

Symbol

Definition

Min.

Typ. Max. Units Test Conditions

Note 1:

±10mV offset represents ±1.5% duty cycle fluctuation

Note 2: Gain = (full range of duty cycle in %) / (full input voltage range).

mA

mV

mA

Symbol

Definition

Min. Typ. Max. Units Test Conditions

Propagation delay characteristics

fo

Carrier frequency output

35

41

47

kHz

Temperature drift of carrier frequency

—

500

—

ppm/

Dmin

Minimum duty

—

7

—

%

Dmax

Maximum duty

—

93

—

%

VIN+=+260mV,VIN-=0V

BW

fo bandwidth

15

kHz

PHS

Phase shift at 1kHz

-10

o

tdoc

Propagation delay time of OC (IR2172)

1

1.5

—

twoc

Low true pulse width of OC (IR2172)

—

1

—

AC Electrical Characteristics

figure 1

VIN+=-260mV,VIN-=0V

sine wave, gain=-3dB

sine wave

µsec