Data Sheet No. PD60233 revB
IR2277S/IR2177S(PbF)
Phase Current Sensor IC for AC motor control
Features
•
Floating channel up to 600 V for IR2177 & 1200 V for
IR2277
Product Summary
V
OFFSET
(max)
V
in
range
Bootstrap supply range
Floating channel quiescent
current (max)
Sensing latency (max)
Throughput
Over Current threshold
(max)
IR2277
IR2177
1200 V
600 V
±250mV
8-20 V
2.2 mA
7.5 µsec
(@20kHz)
40ksample/sec
(@20kHz)
±470 mV
•
•
•
•
•
•
•
Synchronous sampling measurement system
High PWM noise (ripple) rejection capability
Digital PWM output
Fast Over Current detection
Suitable for bootstrap power supplies
Low sensing latency (<7.5
µsec
@20kHz)
Ratiometric analog output suitable for DSP A/D interface
Description
IR2177/IR2277 is a high voltage, high speed, single phase current
sensor interface for AC motor drive applications. The current is
sensed by an external shunt resistor. The IC converts the analog
voltage into a time interval through a precise circuit that also
performs a very good ripple rejection showing small group delay.
The time interval is level shifted and given to the output both as a
PWM signal (PO) and analog voltage (OUT). The analog voltage is
proportional to the measured current and is ratio metric with respect
to an externally provided voltage reference. The max throughput is
40 ksample/sec suitable for up to 20 kHz asymmetrical PWM
modulation and max delay is <7.5
µsec
(@20kHz). Also a fast over
current signal is provided for IGBT protection.
Package
Typical Connection
(Please refer to
Lead Assignments
for correct pin
configuration. This
diagram shows
electrical
connections only)
1
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IR2277S/IR2177S(PbF)
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 V
SS
, all currents are defined positive into any lead. The Thermal Resistance and Power
Dissipation ratings are measured under board mounted and still air conditions.
Symbol
V
B
V
S
V
in+
/ V
in-
G0 / G1
V
CC
Sync
V
RH
/V
RL
Out
PO
OC
dV
S
/dt
P
D
R
thJA
T
J
T
S
T
L
Definition
High Side Floating Supply Voltage
High Side Floating Ground Voltage
High-Side Inputs Voltages
High-Side Range Selectors
Low-Side Fixed Supply Voltage
Low-Side Input Synchronization Signal
DSP Reference High and Low Voltages
Analog Output Voltage
PWM Output
Over Current Output Voltage
Allowable Offset Voltage Slew Rate
Maximum Power Dissipation
Thermal Resistance, Junction to Ambient
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
IR2277
IR2177
Min.
- 0.3
- 0.3
V
B
- 25
V
S
- 5
V
S
- 0.3
- 0.3
- 0.3
- 0.3
- 0.3
- 0.3
- 0.3
Max.
1225
625
V
B
+ 0.3
V
B
+ 0.3
V
B
+ 0.3
25
V
CC
+ 0.3
V
CC
+ 0.3
V
CC
+ 0.3
V
CC
+ 0.3
V
CC
+ 0.3
50
250
90
125
150
300
Units
V
V
V
V
V
V
V
V
V
V
V/ns
mW
ºC/W
ºC
ºC
ºC
-40
-55
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions. All voltage parameters are absolute
voltages referenced to V
ss
. The
V
s
offset rating is tested with all supplies biased at 15V differential.
Symbol
V
BS
V
S
V
in+
/ V
in-
G0 / G1
V
CC
Sync
f
sync
PO
OC
V
RH
V
RL
T
A
Definition
High Side Floating Supply Voltage (V
B
- V
S
)
High Side Floating Ground Voltage
High-Side Inputs Voltages
High-Side Range Selectors
Low Side Logic Fixed Supply Voltage
Low-Side Input Synchronization Signal
Sync Input Frequency
IR2277
IR2177
Min.
V
S
+ 8.0
-5
V
S
- 5.0
Note 1
8
V
SS
4
8
-0.3
-0.3
3
V
SS
-40
Max.
V
S
+ 20
1200
600
V
S
+ 5.0
Note1
20
V
CC
20
20
Note 2
Note 2
V
CC
-2.5
V
RH
-3
125
Units
V
V
V
V
V
kHz
V
V
V
V
ºC
Using PO
Using OUT
PWM Output
Over Current Output Voltage
OUT Reference High Voltage
OUT Reference Low Voltage
Ambient Temperature
Note 1:
Shorted to
V
S
or
V
B
Note 2:
Pull-Up Resistor to
V
CC
2
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IR2277S/IR2177S(PbF)
Static Electrical Characteristics
V
CC
, V
BS
= 15V unless otherwise specified. Temp=27°C; V
in
=V
in+
- V
in
.
Pin: V
CC
, V
SS
, V
B
, V
S
Symbol
I
QBS
I
QCC
Definition
Quiescent V
BS
supply current
Quiescent V
CC
supply current
IR2277
Min.
Typ.
1
Max.
2.2
6
50
Units
mA
mA
Test
Conditions
f
sync
= 10kHz,
20kHz
f
sync
= 10kHz,
20kHz
V
B
= V
S
=
1200V
V
B
= V
S
= 600V
I
LK
Offset supply leakage current
IR2177
50
µA
Pin: V
in+
, V
in-
, Sync, G0, G1, OC
Symbol
V
inmax
V
inmin
V
IH
V
IL
V
hy
I
vinp
I
pu
|V
octh
|
R
Sync
R
onOC
Definition
Maximum input voltage before saturation
Minimum input voltage before saturation
Sync Input High threshold
Sync Input Low threshold
Sync Input Hysteresis
V
in+
input current
G0, G1 pull-up Current
Over Current Activation Threshold
SYNC to V
SS
internal pull-down
Over Current On Resistance
Min.
Typ.
250
-250
Max.
Units
mV
mV
V
V
V
Test
Conditions
2.2
0.8
0.2
-18
-20
300
6
25
-6
-8
470
12
75
See Figure 1
See Figure 1
See Figure 1
f
sync
= 4kHz to
20kHz
G1, G0 = V
B
-
5V
µA
µA
mV
kΩ
Ω
@ I = 2mA
See Figure 3
Schmitt trigger
SYNC
R
sync
V
IL
V
hy
V
IH
V
SS
Figure 1:
Sync input thresholds
Figure 2:
Sync input circuit
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IR2277S/IR2177S(PbF)
Pin: PO
Symbol
Definition
Min.
Typ.
Max.
Units
Test
Conditions
R
pull-up
=500
Ω
f
sync
= 4, 20kHz
V
threshold
=2.75V
Ext supply=5V
(See Figure 6)
V
POs
Input offset voltage measured by PWM
output
-50
20
mV
∆V
POs
/
∆Tj
∆V
POs
G
p
∆G
p
/
∆Tj
CMRR
PO
V
POlin
Input offset voltage temperature drift
∆offset
between samples on channel1
and channel2 measured at PO (See
Note1)
PWM Output Gain
PWM Output Gain Temperature Drift
PO Output common mode (V
S
) rejection
PO Linearity
-10
-38
TBD
10
-40.5
TBD
0.2
0.07
TBD
0.8
1.6
0.2
25
75
0.2
-42.5
µV/°C
mV
%/V
%/(V
*
ºC)
m%/V
%
%/ºC
V
%/V
Ω
V
s
-V
ss
= 0,
600V
f
sync
= 10kHz
10kHz
10kHz
OC active (See
Figure 4)
V
CC
=V
BS
=
8,20V
@ I = 2mA
See Figure 3
f
sync
= 10kHz
See Figure 6
V
in
=±250mV
∆
V
lin
/
∆Tj
PO Linearity Temperature Drift
V
thPO
PO threshold for OC reset
PSRR PO PSRR for PO Output
R
onPO
PO On Resistance
Note1:
Refer to PO output description for channels definition
PO
or
OC
R
ON
V
SS
Internal signal
Figure 3:
PO and OC open collector circuit
4
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IR2277S/IR2177S(PbF)
Pin: OUT, VRH, VRL
Symbol
R
REF
V
aos
∆
V
aos
/
∆Tj
∆V
aos
G
a
∆G
a
/
∆Tj
CMRR
OUT
V
OUTlin
∆
V
lin
/
∆Tj
PSRR
OUT
V
OUTl
V
OUTh
Definition
V
RH
to V
RL
input resistance
Input offset voltage measured by
analog output
Input offset voltage temperature drift
∆offset
between samples on channel1
and channel2 measured at OUT
(Note1)
Analog Output Gain
Analog Output Gain Temperature Drift
Analog Output common mode (V
S
offset) rejection
Out Linearity
Out Linearity Temperature Drift
PSRR for Analog Output
Vout Low Saturation
Vout High Saturation
Min.
36
-100
Typ.
Max.
84
50
Units
kΩ
mV
µV / ºC
Test
Conditions
TBD
f
sync
= 8kHz, 20
kHz
Measured by
analog output
f
sync
= 8kHz, 20
kHz
-20%
2VR
TBD
100
0.3
TBD
+20%
V/V
ºC
dB
-1
V
R
=V
RH
-V
RL
=3V
0.7
%
%/ºC
30
0
V
RH
+0.2
100
50
V
RH
+0.7
dB
mV
V
Vs-Vss=0V,
600V
f
sync
= 10kHz
f
sync
= 8kHz,
20kHz
f
sync
= 8kHz,
20kHz
V
CC
= V
BS
=8V,
20V
V
in
= -500mV
V
in
= +500mV
Note1:
Refer to PO output description for channels definition
5
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