MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 150kHz Bandwidth and 2.4 kVRMS Isolation
1 Product Description
2 Features
The MagnTek® MT9223 product series is a fully
integrated Hall Effect-based isolated linear current
sensor device family designed for AC or DC current
sensing in industrial, commercial, and communications
systems. Each of the MT9223 consists of a precise, lowoffset, linear Hall circuit with a low-resistance current
conductor path located near the surface of the die.
Applied current flowing through this low-resistance
current conductor path generates a magnetic field that
the Hall IC converts into a proportional voltage. The
current is sensed differentially in order to reject
common-mode
fields,
improving
accuracy
in
magnetically noisy environments. Device accuracy is
optimized through the close proximity of the magnetic
field to the Hall transducer.
￭
±1.9% Typical Total Output Error
￭
±0.5% Typical Linearity Over Temperature
￭
Fast Output Response Time: 4 μs (typ.)
￭
150kHz Signal Bandwidth
￭
5.0V Single Supply Operation
￭
-40℃~125℃ Operating Temperature
A precise, proportional voltage is provided by the lowoffset, chopper-stabilized BCD Hall IC, which has been
accurately calibrated when it is manufactured. The
output of the device has a positive slope (>VOQ) when
an increasing current flows through the primary
current conduction path (from pins 1 and 2, to pins 3
and 4). The internal resistance of this conductive path
is 1.2 mΩ typical, providing low-power loss. The
terminals of the conductive path are electrically
isolated from the signal leads (pins 5 through 8). This
allows the MT9223 current sensor IC to be used in
high-side current sense applications without use other
costly isolation techniques.
￭
Output Voltage Proportional to AC or DC Current
￭
Ratiometric Output from Supply Voltage
￭
Extremely Stable Quiescent Output Voltage
￭
Low-Noise Analog Signal Path
￭
Device Bandwidth is Set via FILTER Pin
￭
Near Zero Magnetic Hysteresis
￭
Isolation Voltage:
---2.4kVrms Dielectric Surge Isolation
￭
Package Option:
The MT9223 family provides SOP-8 package to
customers, The package is RoHS compliant.
￭
￭
Primary Conductor Resistance
---1.2mΩ
￭
Sensing Current Range: (AC or DC)
---±20A, ±25A, ±30A, ±40A, ±50A
---+20A, +30A, +35A
---SOP-8
RoHS Compliant: (EU)2015/863
3 Applications
￭
Low-power inverter current sensing
￭
Motor phase and rail current sensing
￭
PV String Inverters
￭
Chargers and Converters
￭
Switching Power Supplies
￭
Overcurrent Protection
4 Product Overview of MT9223
Not to scale
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1
Part No.
Description
MT9223CT
SOP-8, tape & reel (3000pcs/bag)
Rev
0.3
MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
Table of Contents
1
Product Description………...…….……………….……...…………………………………….…….………1
2
Features……………………………….……..……………………………………………………………….…….1
3
Applications……………………………………………………………………………………………………….1
4
Product Overview of MT9223…………………………………………………………………………….1
5
Functional Block Diagram …………………………………………………….………………….3
6
Pin Configuration and Function…..……………………………………………………………………..3
7
Naming Specification.………………………….…………………………………………………………….4
8
Selection Guide………………………………………………………………………………………………….4
9
Output Voltage vs. Input Current.………………………………………………………………………5
10
Typical Application Circuit………...…………………………………………………………………….....6
11
Electrical and Magnetic Characteristics………………………………………………………………7
11.1 Absolute Maximum Ratings………………….…………………………………………………………….7
11.2 Isolation and Package Characteristics…..……………………………………………………………..7
11.3 ESD Rating……………………….…………………………………………………………………………………8
11.4 Electrical Characteristics…...………………………………………………………………………8
11.5 Accuracy Specifications…………….………..…………………………………………………………….9
12
Characteristic Definitions……….…………………………………………………………………………14
13
Package Material Information…………………………………………………………………………17
13.1 SOP-8 Package Information…………………………………………………………………..17
14 Copy Rights and Disclaimer………………………………………………………………………..……..18
1
2
3
Originally Version
0.2 Version
0.3 Version
Reversion History
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Update Application Figure
Update Absolute Maximum Ratings
2
Rev
0.3
MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
5 Functional Block Diagram
Figure.1
Functional Block Diagram
6 Pin Configuration and Functions
IP+
VCC
IP+
VOUT
IP-
FILTER
IP-
GND
Top View
Figure.2
Pin Configuration & Functions (SOP-8)
No.
Name
Description
1, 2
IP+
Input Current Positive Pin
3, 4
IP-
Input Current Negative Pin
5
GND
Signal Ground
6
FILTER
Filter Pin to Set Bandwidth
7
VOUT
Analog Output Signal
8
VCC
Power Supply
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Rev
0.3
MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
7 Naming Specification
Part Number
MT9223
CT
30
B
R
5
❶
❷
❸
❹
❺
❻
❹ Current Polarity
❶ Series Name
❷ Package Type
Type
Package Type
CT
SOP-8
Type
Current Polarity
B
Bidirectional---AC Current
U
Unidirectional---DC Current
❺ Output Mode
❸ Input Current Range
Type
Input Current Range
Type
Output Mode
20
Full scale sensing range: 20A
R
Ratiometry output
25
Full scale sensing range: 25A
30
Full scale sensing range: 30A
35
Full scale sensing range: 35A
40
Full scale sensing range: 40A
50
Full scale sensing range: 50A
❻ Power Supply
Type
Power Supply
5
VCC=5V
8 Selection Guide
Current Range
(A)
VCC
(V)
Sensitivity
(mV/A)
Package
Qty per Reel
(pcs)
MT9223CT-20UR5
+20
5
200
SOP-8
3000
MT9223CT-30UR5
+30
5
133.3
SOP-8
3000
MT9223CT-35UR5
+35
5
114.3
SOP-8
3000
MT9223CT-20BR5
±20
5
100
SOP-8
3000
MT9223CT-25BR5
±25
5
80
SOP-8
3000
MT9223CT-30BR5
±30
5
66.6
SOP-8
3000
MT9223CT-40BR5
±40
5
50
SOP-8
3000
MT9223CT-50BR5
±50
5
40
SOP-8
3000
Ordering Part Number
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Rev
0.3
MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
9 Output Voltage vs. Input Current
MT9223CT – xxUR5
MT9223CT – xxBR5
IP+
VOUT
IP+
IP-
FILTER
IP-
FILTER
IP-
GND
IP-
GND
IP+
Top View
IP = 0A
Vout=0.5V
VOUT
Top View
IP = 0A
Vout=2.5V
VCC
VCC
IP+
VOUT
IP+
IP-
FILTER
IP-
FILTER
IP-
GND
IP-
GND
IP+
IP+
Top View
VOUT
Top View
IP > 0A
Vout=2.5~4.5V
IP > 0A
Vout=0.5~4.5V
VCC
IP+
VOUT
IP+
IP-
FILTER
IP-
FILTER
IP-
GND
IP-
GND
IP+
IP+
Top View
VCC
VOUT
Top View
IP < 0A
Vout=2.5~0.5V
0.5
0.5
1.5
1.5
2.5
2.5
Output Voltage (V)
3.5
3.5
4.5
4.5
IP < 0A
Vout=0.5V~0V
Output Voltage (V)
VCC
VCC
IP+
0
10
20
30
40 -50 -40 -30 -20 -10
Input Current (A)
Figure.3
0
10
20
30
Rev
0.3
Input Current (A)
Output Voltage vs. Input Current
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5
40
50
MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
10 Typical Application Circuit
The typical application circuits of MT9223 series products include a bypass capacitor (CBYPASS capacitor
between VCC and GND is necessary) and a filter capacitor as an additional external components. On the
input side, pins 1 and 2 are shorted together, pins 3 and 4 are shorted together. The analog signal output
is measured directly from the VOUT pin. The signal is proportional to the IP of the primary sensing current
of AC or DC within the specified measurement range. The FILTER pin can be used to reduce bandwidth
to optimize noise performance, but at the same time proportionally increase response time.
VCC
IP+
IP-
IP+
VCC
IP+
VOUT
IP-
Filter
IP-
GND
VCC
CBYPASS
0.1uF
CFILTER
CLOAD
ADC
VREF
VIN
1nF
GND
fc=1/2*π*RF*CFILTER
Figure.4
Typical Application Circuit
Figure.5
Simplified Three-Phase Inverter Schematic
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Rev
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MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
11 Electrical Magnetic Characteristics
11.1 Absolute Maximum Ratings
Absolute maximum ratings are limited values to be applied individually, and beyond which the serviceability of the
circuit may be impaired. Functional operability is not necessarily implied. Exposure to absolute maximum rating
conditions for an extended period of time may affect device reliability.
Symbol
Parameters
Min
Max
Units
VCC
Supply Voltage
-
6
V
VRCC
Reverse Battery Voltage
-0.1
-
V
VOUT
Output Voltage
-
VCC+0.5
V
VROUT
Reverse Output Voltage
-0.1
-
V
IOUT(source)
Continuous Output Current
-
80
mA
IOUT(sink)
Continuous Output Current
-
40
mA
TA
Operating Ambient Temperature
-40
125
℃
TS
Storage Temperature
-50
150
℃
TJ
Junction Temperature
-
165
℃
Value
Units
11.2 Isolation and Package Characteristics
Symbol
Parameters
Test Conditions
VSURGE
Dielectric Surge
Strength Test Voltage
Tested ±5 pulses at 30 seconds in
compliance to IEC 61000-4-5 1.2 / 50 μs
(width).
6000
V
VISO
Dielectric Strength
Test Voltage
Test method per UL standard 60950-1
(edition 2).
VTEST = VISO, t = 60 s (qualification);
VTEST = 1.2 × VISO, t = 1 s (100%
production)
2400
Vrms
DCL
External Clearance
Measured from input terminals to output
terminals, shortest distance through air.
4
mm
DCR
External Creepage
Measured from input terminals to output
terminals, shortest distance path along
body.
4
mm
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Rev
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MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
11.3 ESD Ratings
Symbol
VESD
Parameters
Reference
Values
Unit
Human-body model (HBM)
AEC-Q100-002
Class IIIA
Grade
Charged-device model (CDM)
AEC-Q100-011
Class C3
Grade
Latch up
AEC-Q100-004
Class IIA
Grade
11.4 Electrical Specifications
At TA =-40~125 ℃, VCC=5V (unless otherwise specified)
Symbol
Parameters
Test Condition
Min
Typ
Max
Unit
VCC
Supply Voltage
-
4.5
5
5.5
V
ICC
Supply Current
TA = 25°C
-
14
20
mA
RIP
Primary Conductor Resistance
TA = 25°C
-
1.2
-
mΩ
BW
Internal Bandwidth
Small signal –3 dB; CL =
1 nF
-
150
-
KHz
TPO
Power on time
TA = 25°C, CL = 1nF,
IP=IPR(max) applied
-
190
-
us
TR
Rise time
IP = IPR(max),
A = 25°C, CL = 1nF
-
3
-
us
TPD
Propagation Delay
IP = IPR(max),
TA = 25°C, CL = 1nF
-
2
-
us
TRESP
Response Time
IP = IPR(max),
TA = 25°C, CL = 1nF
-
4
5
us
VOL
Analog Output Low Saturation
Level
RL>=4.7KΩ
-
-
0.3
V
VOH
Analog Output High Saturation
Level
RL>=4.7KΩ
VCC-0.3
-
-
V
CL
Output CAP Load
OUT to GND
-
1
10
nF
ROUT
DC Output resistance
-
5
-
Ω
RL
Output RES Load
Pull-down to Ground
4.7
-
-
KΩ
Pull-up to VCC
4.7
-
-
KΩ
RF(int)
Internal filter resistance
-
1.8
-
KΩ
IND
Noise Density
Input-referenced noise
density; TA = 25°C, CL =
1 nF
-
120
-
uA/√Hz
ELIN
Nonlinearity error
Through full range of IP
-1.5
-
1.5
%
ERAT_SNST
Ratiometry Sensitivity Error
VCC = 4.5 to 5.5 V, TA =
25°C
-
±1.5
-
%
ERAT_VOQ
Ratiometry Quiescent Voltage
Output Error
VCC = 4.5 to 5.5 V, TA =
25°C
-
±1
-
%
* Device may be operated at higher primary current levels, ambient temperatures, and internal leadframe temperatures, provided the
Maximum Junction Temperature, is not exceeded.
Continued on the next page…
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MT9223
Fully Integrated, Hall Effect-Based Linear Current Sensor IC with
150kHz Bandwidth and 2.4 kVRMS Isolation
Electrical Specifications (continued)
At TA =-40~125 ℃, VCC=5V (unless otherwise specified)
Symbol
Parameters
Test Condition
Min
Typ
Max
Unit
CMFRR
Common Mode Field Rejection
Ratio
Uniform external
magnetic field
-
40
-
dB
SNST(match)
Hall Plate Sensitivity Matching
TA = 25°C
±1
-
%
VPORH
Power-On Reset High Voltage
TA = 25°C,
VCC rising
3.75
4
4.25
V
VPORL
Power-On Reset Low Voltage
TA = 25°C,
VCC falling
-
3.5
-
V
VPORHYS
Power-On Reset Hysteresis
TA = 25°C
-
0.5
-
V
TPORR
Power-On Reset Release Time
TA = 25°C,
VCC rising
-
30
-
us
TPORA
Power-On Reset Analog Delay
TA = 25°C,
VCC rising
-
5
-
us
ISCLP
Source Current of Over-CurrentLimit
-
-
80
-
mA
ISCLN
Sink Current of Over-CurrentLimit
-
-
40
-
mA
TSCLD
Detect Time for Over-CurrentLimit
TA = 25°C, IOUT>ISCLP
or IOUT
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