ACS733KMATR-65AB-T [ALLEGRO]
1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package;
| 型号： | ACS733KMATR-65AB-T |
| 厂家： | 
ALLEGRO MICROSYSTEMS |
| 描述： | 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package |
| 文件： | 总22页 (文件大小：2425K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ACS732KMA and ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
FEATURES AND BENEFITS
DESCRIPTION
• AEC-Q100 automotive qualified
The ACS732KMA and ACS733KMA are a new generation
of high bandwidth current sensor ICs from Allegro™. These
• High bandwidth, 1 MHz analog output
• Differential Hall sensing rejects common-mode fields
• High-isolation SOIC16 wide body package provides
galvanic isolation for high-voltage applications
• Industry-leading noise performance with greatly
improved bandwidth through proprietary amplifier and
filter design
• UL 60950-1 (ed. 2) and UL 62368 (ed. 1) certified
□ Dielectric Strength Voltage = 4.8 kVRMS
□ Basic Isolation Working Voltage = 1097 VRMS
□ Reinforced Isolation Working Voltage = 550 VRMS
• Fast and externally configurable overcurrent fault
detection
• 0.85 mΩ primary conductor resistance for low power loss
and high inrush current withstand capability
• Options for 3.3 V and 5 V single supply operation
• Output voltage proportional to AC and DC current
• Factory-trimmed sensitivity and quiescent output voltage
for improved accuracy
devices provide a compact, fast, and accurate solution for
measuring high-frequency currents in DC/DC converters and
otherswitchingpowerapplications.TheACS732andACS733
offer high isolation, high bandwidth Hall-effect-based current
sensing with user-configurable overcurrent fault detection.
These features make them ideally suited for high-frequency
transformerandcurrenttransformerreplacementinapplications
running at high voltages.
TheACS732andACS733aresuitableforallmarkets,including
automotive, industrial, commercial, and communications
systems. They may be used in motor control, load detection
andmanagement,switch-modepowersupplies,andovercurrent
fault protection applications.
The wide body SOIC-16 package allows for easy
implementation. Applied current flowing through the copper
conductionpathgeneratesamagneticfieldthatissensedbythe
IC and converted to a proportional voltage. Current is sensed
differentially in order to reject external common-mode fields.
Deviceaccuracyisoptimizedthroughthecloseproximityofthe
magnetic field to the Hall transducers. A precise, proportional
voltageisprovidedbytheHallIC,whichisfactory-programmed
afterpackagingforhighaccuracy.Thefullyintegratedpackage
hasaninternalcopperconductivepathwithatypicalresistance
of 0.85 mΩ, providing low power loss.
• Ratiometric output from supply voltage
PACKAGE: 16-Pin SOICW (suffix MA)
The current-carrying pins (pins 1 through 8) are electrically
isolated from the sensor leads (pins 9 through 16). This allows
the devices to be used in high-side current sensing applications
without the use of high-side differential amplifiers or other
costly isolation techniques.
CB Certificate Number:
US-32210-M3-UL
US-36315-UL
Not to scale
Continued on next page...
RPU
CBYPASS
1
16
15
14
13
12
11
10
9
IP+
IP+
IP+
IP+
IP–
IP–
IP–
IP–
VOC
VCC
2
3
4
5
6
7
8
ACS733
ACS732/ACS733 outputs
an analog signal, VIOUT, that
changes proportionally with
the bidirectional AC or DC
primary sensed current, IP,
within the specified mea-
surement range.
VCC
FAULT
VIOUT
GND
IP
CL
GND
The overcurrent threshold
may be set with a resistor
divider tied to the VOC pin.
PROGRAM
Figure 1: Typical Application Circuit
October 7, 2020
ACS732-33KMA-DS, Rev. 6
MCO-0000589
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
DESCRIPTION (continued)
The ACS732 and ACS733 are provided in a small, low profile, free printed circuit board assembly processes. Internally, the device
surface-mountSOIC-16wide-bodypackage.Theleadframeisplated is lead-free. These devices are fully calibrated prior to shipment
with 100% matte tin, which is compatible with standard lead (Pb) from the Allegro factory.
SELECTION GUIDE
Sensitivity [1]
Sens(Typ)
,
Optimized
Range, IP
(A)
Nominal Supply
Voltage, VCC, (V)
TA
(°C)
Part Number
Packing [2]
(mV/A)
30.77
26.67
20.3
ACS732KMATR-65AB-T
ACS732KMATR-75AB-T
ACS733KMATR-65AB-T
±65
±75
±65
5
5
–40 to 125
Tape and reel, 1000 pieces per reel
3.3
[1] Measured at Nominal Supply Voltage, VCC
.
[2] Contact Allegro for additional packing options.
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
VCC
Notes
Rating
Units
V
Supply Voltage
6
–0.1
6
Reverse Supply Voltage
Output Voltage
VRCC
V
VIOUT
V
Reverse Output Voltage
Fault Output Voltage
VRIOUT
VFAULT
VRFAULT
VVOC
–0.1
6
V
V
Reverse Fault Output Voltage
Forward VOC Voltage
–0.1
6
V
V
Reverse VOC Voltage
VRVOC
–0.1
15
V
Output Current
IOUT
ICMAX
TA
Maximum survivable sink or source current on the output
mA
A
Maximum Continuous Current
Nominal Operating Ambient Temperature
Maximum Junction Temperature
TA = 25°C
Range K
60
–40 to 125
165
°C
°C
TJ(max)
Storage Temperature
Tstg
–65 to 170
°C
2
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
ESD RATINGS
Characteristic
Symbol
VHBM
Test Conditions
Value
±12
±1
Unit
kV
Human Body Model
Charged Device Model
Per AEC-Q100
Per AEC-Q100
VCDM
kV
ISOLATION CHARACTERISTICS
Characteristic
Symbol
Notes
Rating
Unit
Agency type-tested for 60 seconds per UL 60950-1
(edition 2) and UL 62368 (edition 1). Production tested at 3000
VRMS for 1 second, in accordance with UL 60950-1 (edition 2)
and UL 62368 (edition 1).
Dielectric Strength Test Voltage
VISO
4800
VRMS
1480
1047
730
VPK
VRMS or VDC
VPK
Maximum approved working voltage for basic (single) isolation
according to UL 60950-1 (edition 2) and UL 62368 (edition 1).
Working Voltage for Basic Isolation
VWVBI
Maximum approved working voltage for reinforced isolation
according to UL 60950-1 (edition 2) and UL 62368 (edition 1).
Working Voltage for Reinforced Isolation
VWVRI
517
7.5
VRMS or VDC
mm
Clearance
Creepage
Dcl
Dcr
Minimum distance through air from IP leads to signal leads.
Minimum distance along package body from IP leads to signal
leads
7.9
mm
Distance Through Insulation
Comparative Tracking Index
DTI
CTI
Minimum internal distance through insulation
Material Group II
90
μm
400 to 599
V
PINOUT DIAGRAM AND TERMINAL LIST TABLE
Terminal List Table
ꢈꢉꢊ
1ꢂ
15
1ꢁ
13
1ꢀ
11
10
9
ꢅPꢆ
ꢅPꢆ
ꢅPꢆ
ꢅPꢆ
ꢅPꢇ
ꢅPꢇ
ꢅPꢇ
ꢅPꢇ
1
ꢀ
3
ꢁ
5
ꢂ
ꢃ
ꢄ
Number
1,2,3,4
5,6,7,8
Name
Description
ꢈꢊꢊ
IP+
Positive terminals for current being sensed; fused internally.
Negative terminals for current being sensed; fused internally.
ꢈꢊꢊ
IP–
ꢋAUꢌꢍ
ꢈꢅꢉUꢍ
ꢎNꢏ
Programming input pin for factory calibration. Connect to
ground for best ESD performance.
9
PROGRAM
10, 11
12
GND
VIOUT
FAULT
VCC
Device ground terminal.
ꢎNꢏ
Analog output signal.
PRꢉꢎRAM
13
Overcurrent Fault output. Open drain.
Device power supply terminal.
Package MA, 16-Pin
SOICW Pinout Diagram
14, 15
Set the overcurrent fault threshold via external resistor divider
on this pin.
16
VOC
3
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
FUNCTIONAL BLOCK DIAGRAM
VCC VCC
DIGITAL SYSTEM
PROGRAM
FAULT
POR
To All
Programming
Control
Subcircuits
Dynamic Trim
Compensation
Logic
EEPROM and
Control Logic
Fault Filtering
Logic
Temperature
Sensor
Hall
Driver
Fault Trim
VOC
IP+
Hall Sensor Array
Offset
Trim
Sensitivity
Trim
Analog
Filters
VIOUT
IP–
GND
GND
Figure 2: Functional Block Diagram
4
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
COMMON ELECTRICAL CHARACTERISTICS: Over full range of TA, over supply voltage range VCC(MIN) through VCC(MAX) of a
sensor variant, CBYPASS = 0.1 µF, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
4.75
3.14
–
Typ. [1]
5.0
3.3
24
20
–
Max.
5.25
3.46
35
Unit
ACS732
ACS733
V
Supply Voltage
VCC
V
ACS732; VCC = 5.0 V
ACS733; VCC = 3.3 V
VCC to GND
mA
mA
µF
pF
kΩ
Supply Current
ICC
–
35
Bypass Capacitor[2]
CBYPASS
CL
0.1
–
–
Output Capacitance Load
Output Resistive Load
VIOUT to GND
–
220
–
RL
VIOUT to GND
50
–
VCC = 5.0 V, TA = 25°C,
RL(PULLDOWN) = 50 kΩ to GND
VCC – 0.3
–
–
–
–
–
V
V
V
V
VSAT(HIGH)
VCC = 3.3 V, TA = 25°C,
RL(PULLDOWN) = 50 kΩ to GND
VCC – 0.3
–
Output Saturation Voltage
VCC = 5.0 V, TA = 25°C,
RL(PULLDOWN) = 50 kΩ to VCC
–
–
0.5
0.3
VSAT(LOW)
VCC = 3.3 V, TA = 25°C,
RL(PULLDOWN) = 50 kΩ to VCC
Primary Conductor Resistance
Primary Hall Coupling Factor
Secondary Hall Coupling Factor
Hall Plate Sensitivity Matching
Common Mode Field Rejection Ratio
RIP
CF(P)
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
–
–
–
–
–
0.85
4
–
–
–
–
–
mΩ
G/A
G/A
%
CF(s)
0.35
2
Sensmatch
CMFRR
7
mA/G
TA = 25°C; when VCC ≥ VCC(MIN) until
VIOUT = 90% of steady state value
Power On Delay Time
tPOD
–
180
–
µs
Internal Bandwidth
Rise Time [3]
BW
Small signal –3 dB; CL = 220 pF
TA = 25°C, CL = 0.22 nF
TA = 25°C, CL = 0.22 nF
TA = 25°C, CL = 0.22 nF
TA = 25°C, CL = 0.22 nF
–
–
–
–
–
1
–
–
–
–
–
MHz
μs
tr
tRESPONSE
tpd
0.5
0.3
0.2
3.2
Response Time [3]
Propagation Delay Time [3]
Output Slew Rate
μs
µs
SR
V/µs
TA = 25°C, VCC = ±5 % variation of nominal
supply voltage
Zero Current Output Ratiometry Error
Sensitivity Ratiometry Error
ERAT(Q)
–16
–2
±10
16
2
mV
%
TA = 25°C, VCC = ±5 % variation of nominal
supply voltage
ERAT(SENS)
±1.72
Ratiometry Bandwidth
Linearity Error [4]
BWRAT
ELIN
±100 mV on VCC
–
–
10
–
–
kHz
%
TA = 25°C, up to full-scale IP
±0.5
VCC = 5.0 V, TA = 25°C, CL = 220 pF;
input referred
–
–
120
160
–
–
µA/√Hz
µA/√Hz
Noise Density
IND
VCC = 3.3 V, TA = 25°C, CL = 220 pF;
input referred
Continued on next page...
5
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
COMMON ELECTRICAL CHARACTERISTICS (continued): Over full range of TA, over supply voltage range VCC(MIN) through
VCC(MAX) of a sensor variant, CBYPASS = 0.1 µF, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
OVERCURRENT FAULT CHARACTERISTICS
Time from IP > IFAULT to when FAULT pin is
pulled below VFAULT; input current step from 0
to 1.2 × IFAULT
FAULT Response Time [5]
tRESPONSE(F)
0.2
0.5
0.75
μs
Time from IP falling below IFAULT – IHYS to
FAULT Release Time [5]
FAULT Range
tC(F)
when VFAULT is pulled above VFAULTL
100 pF from FAULT to ground
;
0.1
–
–
0.45
µs
A
Relative to the full scale of IPR; set via the
VOC pin
IFAULT
0.5 × IPR
2 × IPR
FAULT Output Low Voltage
FAULT Pull-Up Resistance
FAULT Leakage Current
FAULT Hysteresis[6]
VFAULT
RF(PULLUP)
IFAULT(LEAKAGE)
IHYST
In fault condition; RF(PULLUP) = 10 kΩ
–
10
–
–
0.4
500
–
V
kΩ
µA
A
–
±5
–
0.05 × IPR
–
Tested at VVOC = 0.2 × VCC (IFAULT threshold
FAULT Error [7]
EFAULT
–
Etot ±3
–
%
= 100% × IPR
)
VOC Input Range
VOC Input Current
VVOC
IVOC
0.1 × VCC
–
–
0.4 × VCC
100
V
10
nA
[1] Typical values with ± are ±3 sigma values.
[2] Use of a bypass capacitor is required to increase output stability.
[3] See definitions of Dynamic Response Characteristics section of this datasheet.
[4] The sensor will continue to respond to current beyond the range of IPR until the high or low output saturation voltage. However, the nonlinearity in this region may be
worse than the nominal operating range.
[5] Guaranteed by design.
[6] After IP goes above IFAULT, tripping the internal comparator, IP must fall below IFAULT – IHYST, before the internal comparator will reset.
[7] Fault error is defined as the value at which a fault is reported relative to the desired threshold for IFAULT
.
6
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
ACS732KMATR-65AB-T PERFORMANCE CHARACTERISTICS: Valid at TA = –40°C to 125°C and VCC= 5 V, unless otherwise specified
Characteristic
NOMINAL PERFORMANCE
Current Sensing Range
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
IPR
–65
–
–
65
–
A
mV/A
V
Sensitivity
Sens
30.77
Zero Current Output Voltage
TOTAL OUTPUT ERROR COMPONENTS
VIOUT(Q)
IP = 0 A, TA = 25°C
–
0.5 × VCC
–
IP = IPR(max), TA = 25°C
IP = IPR(max), TA = 125°C
IP = IPR(max), TA = 25°C to 125°C
IP = IPR(max), TA = –40°C
IP = IPR(max), TA = 25°C
IP = IPR(max), TA = 125°C
IP = IPR(max), TA = –40°C
IP = 0 A, TA = 25°C
–4
–3
±2.5
±1
4
3
%
%
Total Output Error [2]
Sensitivity Error
ETOT
ESENS
VOE
–
±5.5
±5
–
%
–8
8
%
–1.5
–1.5
–3
±0.75
±0.75
±2
1.5
1.5
3
%
%
%
–90
–60
–
±57
±15
±100
±90
90
60
–
mV
mV
mV
mV
IP = 0 A, TA = 125°C
Offset Voltage Error
IP = 0 A, TA = 25°C to 125°C
IP = 0 A, TA = –40°C
–170
170
LIFETIME DRIFT CHARACTERISTICS [3]
Total Output Error Including Lifetime Drift [4] ETOT(DRIFT) IP = IPR(max), TA = 25°C, 125°C
–12
–2
±3.2
±1
12
2
%
%
Sensitivity Error Including Lifetime Drift [5]
Offset Voltage Error Including Lifetime Drift [6]
ESENS(DRIFT) IP = IPR(max), TA = 25°C, 125°C
VOE(DRIFT) IP = 0 A, TA = 25°C, 125°C
–225
±63
225
mV
[1] Typical values with ± are ±3 sigma values, except for lifetime drift, which are the average value including drift (from the worst case stress) after AEC-Q100 qualification.
[2] Percentage of IP, with IP = IPR(MAX), output filtered.
[3] Lifetime drift characteristics are based on AEC-Q100 qualification results.
[4] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 9.5%.
[5] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 1.7%.
[6] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 180 mV.
7
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
ACS732KMATR-75AB-T PERFORMANCE CHARACTERISTICS: Valid at TA = –40°C to 125°C and VCC= 5 V, unless otherwise specified
Characteristic
NOMINAL PERFORMANCE
Current Sensing Range
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
IPR
–75
–
–
75
–
A
mV/A
V
Sensitivity
Sens
26.67
Zero Current Output Voltage
TOTAL OUTPUT ERROR COMPONENTS
VIOUT(Q)
IP = 0 A, TA = 25°C
–
0.5 × VCC
–
IP = IPR(max), TA = 25°C
IP = IPR(max), TA = 125°C
IP = IPR(max), TA = 25°C to 125°C
IP = IPR(max), TA = –40°C
IP = IPR(max), TA = 25°C
IP = IPR(max), TA = 125°C
IP = IPR(max), TA = –40°C
IP = 0 A, TA = 25°C
–4
–3
±2.5
±1
4
3
%
%
Total Output Error [2]
Sensitivity Error
ETOT
ESENS
VOE
–
±5.5
±5
–
%
–8
8
%
–1.5
–1.5
–3
±0.75
±0.75
±2
1.5
1.5
3
%
%
%
–90
–60
–
±57
±15
±100
±90
90
60
–
mV
mV
mV
mV
IP = 0 A, TA = 125°C
Offset Voltage Error
IP = 0 A, TA = 25°C to 125°C
IP = 0 A, TA = –40°C
–170
170
LIFETIME DRIFT CHARACTERISTICS [3]
Total Output Error Including Lifetime Drift [4] ETOT(DRIFT) IP = IPR(max), TA = 25°C, 125°C
–12
–2
±3.2
±1
12
2
%
%
Sensitivity Error Including Lifetime Drift [5]
Offset Voltage Error Including Lifetime Drift [6]
ESENS(DRIFT) IP = IPR(max), TA = 25°C, 125°C
VOE(DRIFT) IP = 0 A, TA = 25°C, 125°C
–195
±55
195
mV
[1] Typical values with ± are ±3 sigma values, except for lifetime drift, which are the average value including drift (from the worst case stress) after AEC-Q100 qualification.
[2] Percentage of IP, with IP = IPR(MAX), output filtered.
[3] Lifetime drift characteristics are based on AEC-Q100 qualification results.
[4] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 9.5%.
[5] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 1.7%.
[6] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 160 mV.
[7] Typical values will be evaluated once the specific part number is ready to go to production.
8
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
ACS733KMATR-65AB-T PERFORMANCE CHARACTERISTICS: Valid at TA = –40°C to 125°C and VCC= 3.3 V, unless otherwise specified
Characteristic
NOMINAL PERFORMANCE
Current Sensing Range
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
IPR
–65
–
–
65
–
A
mV/A
V
Sensitivity
Sens
20.3
Zero Current Output Voltage
TOTAL OUTPUT ERROR COMPONENTS
VIOUT(Q)
IP = 0 A, TA = 25°C
–
0.5 × VCC
–
IP = IPR(max), TA = 25°C
IP = IPR(max), TA = 125°C
IP = IPR(max), TA = 25°C to 125°C
IP = IPR(max), TA = –40°C
IP = IPR(max), TA = 25°C
IP = IPR(max), TA = 125°C
IP = IPR(max), TA = –40°C
IP = 0 A, TA = 25°C
–4.5
–3
±2.5
±1
4.5
3
%
%
Total Output Error [2]
Sensitivity Error
ETOT
ESENS
VOE
–
±5.5
±5
–
%
–9
9
%
–1.5
–1.5
–4
±1.25
±0.8
±2.5
±25
±5
1.5
1.5
4
%
%
%
–55
–40
–
55
40
–
mV
mV
mV
mV
IP = 0 A, TA = 125°C
Offset Voltage Error
IP = 0 A, TA = 25°C to 125°C
IP = 0 A, TA = –40°C
±70
±60
–110
110
LIFETIME DRIFT CHARACTERISTICS [3]
Total Output Error Including Lifetime Drift [4] ETOT(DRIFT) IP = IPR(max), TA = 25°C, 125°C
–12
–2
±3.2
±1
12
2
%
%
Sensitivity Error Including Lifetime Drift [5]
Offset Voltage Error Including Lifetime Drift [6]
ESENS(DRIFT) IP = IPR(max), TA = 25°C, 125°C
VOE(DRIFT) IP = 0 A, TA = 25°C, 125°C
–150
±42
150
mV
[1] Typical values with ± are ±3 sigma values, except for lifetime drift, which are the average value including drift (from the worst case stress) after AEC-Q100 qualification.
[2] Percentage of IP, with IP = IPR(MAX), output filtered.
[3] Lifetime drift characteristics are based on AEC-Q100 qualification results.
[4] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 9.5%.
[5] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 1.7%.
[6] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst case drift observed was 125 mV.
9
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
CHARACTERISTIC PERFORMANCE
ACS732KMATR-65AB-T (5 V)
for ~100 parts
2.65
2.6
150
100
50
2.55
2.5
0
2.45
2.4
-50
-100
-150
2.35
-50
-50
-50
0
0
0
50
100
150
-50
-50
-50
0
50
100
150
150
150
Temperature (degrees C)
Temperature (degrees C)
31.4
31.2
31
3
2
1
30.8
30.6
30.4
30.2
30
0
-1
-2
-3
50
100
150
0
50
100
Temperature (degrees C)
Temperature (degrees C)
6
1
0.8
0.6
0.4
0.2
0
4
2
0
-0.2
-0.4
-0.6
-0.8
-1
-2
-4
-6
0
50
100
50
100
150
Temperature (degrees C)
Temperature (degrees C)
ꢀ3 sigma
aꢁerage
10
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
CHARACTERISTIC PERFORMANCE
ACS733KMATR-65AB-T (3.3 V)
for ~100 parts
80
1.72
1.7
60
40
1.68
1.66
1.64
1.62
1.6
20
0
-20
-40
-60
-80
1.58
-50
-50
-50
0
0
0
50
100
150
150
150
-50
-50
-50
0
50
100
150
Temperature (degrees C)
Temperature (degrees C)
20.7
20.6
20.5
20.4
20.3
20.2
20.1
20
3
2
1
0
-1
-2
-3
19.9
19.8
19.7
0
50
100
150
50
100
Temperature (degrees C)
Temperature (degrees C)
1
0.8
0.6
0.4
0.2
0
6
4
2
0
-0.2
-0.4
-0.6
-0.8
-1
-2
-4
-6
0
50
100
150
50
100
Temperature (degrees C)
Temperature (degrees C)
ꢀ3 sigma
aꢁerage
11
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
CHARACTERISTIC PERFORMANCE
ACS732 AND ACS733 TYPICAL FREQUENCY RESPONSE
5
0
-3dB ≈ 1.8 MHz
-5
-10
1
ꢀ
3
ꢀ
5
ꢀ
10
10
10
10
10
10
ꢀreꢁꢂency ꢃHꢄꢅ
50
0
-50
-100
-150
1
ꢀ
3
ꢀ
5
ꢀ
10
10
10
10
10
10
ꢀreꢁꢂency ꢃHꢄꢅ
For information regarding bandwidth characterization methods used for the ACS732 and ACS733, see the “Characterizing System
Bandwidth” application note (https://allegromicro.com/en/insights-and-innovations/technical-documents/hall-effect-sensor-ic-publica-
tions/an296169-acs720-bandwidth-testing) on the Allegro website.
12
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
CHARACTERISTIC PERFORMANCE: ACS732 (5 V), Rise Time
Test Conditions: TA = 25°C, CBYPASS = 0.1 µF, CLOAD = 220 pF. Input Step = 25 A with 0.3 µs rise time.
Response Time
Test Conditions: TA = 25°C, CBYPASS = 0.1 µF, CLOAD = 220 pF. Input Step = 25 A with 0.3 µs rise time.
13
Allegro MicroSystems
955 Perimeter Road
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www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
Propagation Delay Time
Test Conditions: TA = 25°C, CBYPASS = 0.1 µF, CLOAD = 220 pF. Input Step = 25 A with 0.3 µs rise time.
14
Allegro MicroSystems
955 Perimeter Road
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www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
OVERCURRENT FAULT
Overcurrent Fault
FAULT Pin Output
The ACS732 and ACS733 have fast and accurate overcurrent
fault detection circuitry. The overcurrent fault threshold (IFAULT
)
is user-configurable via an external resistor divider and supports a
range of 50% to 200% of the full-scale primary input (IPR(MAX)).
Fault response and the overcurrent fault thresholds are described
in the following sections.
Primary Current (IP)
t2
IFAULT
tRESPONSE(F)
Fault Response
t1
The high bandwidth of the ACS732 and ACS733 devices allow
for extremely fast and accurate overcurrent fault detection. An
overcurrent event occurs when the magnitude of the input current
(IP) exceeds the user-set threshold (IFAULT). Fault response time
(tRESPONSE(F)) is defined from the time IP goes above IFAULT to
the time the FAULT pin goes below VFAULT. Overcurrent fault
t1 = Time at which input current
surpasses IFAULT threshold
t2 = Time at which output of
FAULT pin is < VFAULT
VFAULT
response is illustrated in Figure 3. When IP goes below IFAULT
–
t
IHYST, the FAULT pin will be released. The rise time of VFAULT
will depend on the value of the resistor RF(PULLUP) and the
capacitance on the pin.
Figure 3: Overcurrent Fault Response
Setting the Overcurrent Fault Threshold
IFAULT
The overcurrent fault threshold (IFAULT) is set via a resistor
divider from VCC to ground on the VOC pin. The voltage on the
VOC pin, VVOC, may range from 0.1 × VCC to 0.4 × VCC. IFAULT
±2 × IPR(max)
may be set anywhere from 50% to 200% IPR(MAX)
.
Overcurrent fault threshold versus VVOC is shown in Figure 4.
The equation for calculating the trip current is shown below.
For bidirectional devices, the fault will trip for both positive and
negative currents.
±0.5 × IPR(max)
VVOC
IFAULT = IPR(MAX) 5 ×
VCC
VVOC
This may be rearranged to solve for the appropriate VVOC value
based on a desired over current fault threshold, shown by the
equation:
0.1 × VCC
0.4 × VCC
Figure 4: Fault Threshold vs. VVOC
VCC
5
IFAULT
IPR(MAX)
VVOC
=
×
It is best practice to use resistor values < 10 kΩ for setting VVOC
With larger resistor values, the leakage current on VOC may
result in errors in the trip point.
.
By setting VVOC with a resistor divider from VCC, the ratio of
VVOC / VCC will remain constant with changes to VCC. In this
regard, the fault trip point will remain constant even as the supply
voltage varies.
15
Allegro MicroSystems
955 Perimeter Road
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ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
DEFINITIONS OF DYNAMIC RESPONSE CHARACTERISTICS
Power-On Delay Time (tPOD
)
V
VCC
When the supply is ramped to its operating voltage, the device
requires a finite amount of time to power its internal components
before responding to an input magnetic field. Power-On Delay
Time (tPOD) is defined as the time interval between a) the power
supply has reached its minimum specified operating voltage
(VCC(MIN)), and b) when the sensor output has settled within
±10% of its steady-state value under an applied magnetic field.
Power-On Delay Time is illustrated in Figure 5.
V
(typ.)
CC
V
IOUT
90% V
IOUT
VCC(min.)
tPOD
t1
t2
t1= time at which power supply reaches
minimum specified operating voltage
t2= time at which output voltage settles
within ±10% of its steady state value
under an applied magnetic field
0
t
Figure 5: Power-On Delay Time (tPOD
)
Rise Time (tr)
Primary Current
(%)
90
The time interval between a) when the sensor reaches 10% of
its full-scale value, and b) when it reaches 90% of its full-scale
value.
V
IOUT
Rise Time, t
r
Propagation Delay (tpd)
20
10
0
The time interval between a) when the sensed input current
reaches 20% of its full-scale value, and b) when the sensor output
reaches 20% of its full-scale value.
t
Propagation Delay, t
pd
Figure 6: Rise Time (tr) and Propagation Delay (tpd)
Response Time (tRESPONSE
)
Primary Current
(%)
80
The time interval between a) when the sensed input current
reaches 80% of its final value, and b) when the sensor output
reaches 80% of its full-scale value.
V
IOUT
Response Time, t
RESPONSE
0
t
Figure 7: Response Time (tRESPONSE
)
16
Allegro MicroSystems
955 Perimeter Road
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www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
DEFINITIONS OF ACCURACY CHARACTERISTICS
Sensitivity (Sens). The change in sensor IC output in response to
a 1A change through the primary conductor. The sensitivity is the
product of the magnetic circuit sensitivity (G/A) (1 G = 0.1 mT)
and the linear IC amplifier gain (mV/G). The linear IC ampli-
fier gain is programmed at the factory to optimize the sensitivity
(mV/A) for the full-scale current of the device.
Accuracy Across
Temperature
Increasing
V
IOUT (V)
Accuracy at
25°C Only
Ideal VIOUT
Accuracy Across
Temperature
Nonlinearity (ELIN). The nonlinearity is a measure of how linear
the output of the sensor IC is over the full current measurement
range. The nonlinearity is calculated as:
Accuracy at
25°C Only
V
IOUT (IPR(max)) – VIOUT(Q)
IPR(min)
–IP (A)
+IP (A)
VIOUT(Q)
ELIN
=
1 –
2 × VIOUT (IPR(max)/2) – VIOUT(Q)
where VIOUT(IPR(max)) is the output of the sensor IC with the
maximum measurement current flowing through it and
VIOUT(IPR(max)/2) is the output of the sensor IC with half of the
maximum measurement current flowing through it.
Full Scale IP
I
PR(max)
0 A
Zero Current Output Voltage (VIOUT(Q)). The output of the
sensor when the primary current is zero. For a unipolar supply
voltage, it nominally remains at 0.5 × VCC for a bidirectional
device and 0.1 × VCC for a unidirectional device. For example, in
the case of a bidirectional output device, VCC = 3.3 V translates
into VIOUT(Q) = 1.65 V. Variation in VIOUT(Q) can be attributed to
the resolution of the Allegro linear IC quiescent voltage trim and
thermal drift.
Accuracy at
25°C Only
Decreasing
IOUT (V)
V
Accuracy Across
Temperature
Figure 8: Output Voltage versus Sensed Current
+E
TOT
Offset Voltage (VOE). The deviation of the device output from
its ideal quiescent value of 0.5 × VCC (bidirectional) or 0.1 × VCC
(unidirectional) due to nonmagnetic causes. To convert this volt-
age to amperes, divide by the device sensitivity, Sens.
Across Temperature
25°C Only
Total Output Error (ETOT). The difference between the cur-
rent measurement from the sensor IC and the actual current (IP),
relative to the actual current. This is equivalent to the difference
between the ideal output voltage and the actual output voltage,
divided by the ideal sensitivity, relative to the current flowing
through the primary conduction path:
–I
P
+I
P
VIOUT (IP) – VIOUT(IP)
ideal
ETOT (IP) =
× 100 (%)
Sensideal(IP)× IP
The Total Output Error incorporates all sources of error and is a
function of IP. At relatively high currents, ETOT will be mostly
due to sensitivity error, and at relatively low currents, ETOT will
be mostly due to Offset Voltage (VOE). In fact, as IP approaches
zero, ETOT approaches infinity due to the offset voltage. This is
illustrated in Figure 8 and Figure 9. Figure 8 shows a distribu-
tion of output voltages versus IP at 25°C and across temperature.
Figure 9 shows the corresponding ETOT versus IP.
–E
TOT
Figure 9: Total Output Error versus Sensed Current
17
Allegro MicroSystems
955 Perimeter Road
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www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
APPLICATION INFORMATION
If there is an average sensitivity error or average offset voltage,
then the average Total Error is estimated as:
Ratiometry
The ACS732 and ACS733 are both ratiometric sensors. This
means that for a given change in supply voltage, the device’s zero
current output voltage and sensitivity will scale proportionally.
100 × VOE
AVG
ETOT (IP) = ESENS
+
AVG
AVG
Sens × IP
Sensitivity Ratiometry
Layout Guidelines
Ideally, a 5% increase in VCC will result in a 5% increase in
sensitivity. However, the ratiometric response of any sensor is not
ideal. Ratiometric Sensitivity Error ERAT(SENS) is specified by the
equation:
There are a few considerations during PCB layout that will
help to maintain high accuracy when using Allegro’s integrated
current sensors. Below is a list of common layout mistakes that
should be avoided:
SensitivityVCC
V
CC(N)
(
<
F
2
=
ERAT(SENS) 100%× 1 –
×
• Extending current carrying traces too far beneath the IC, or
injecting current from the side of the IC
V
CC
SensitivityVCC(N)
where VCC(N) is equal to the nominal VCC (3.3 V, or 5.0 V) and
SensitivityVCC(N) is the measured sensitivity at nominal VCC for a
particular device. The symbol VCC is the measured VCC value in
application and SensitivityVCC is the measured sensitivity at that
VCC level for a particular device.
• Placing secondary current phase traces too close to or below
the IC
Extending the Current Traces
The length of copper trace beneath the IC may impact the path of
current flowing through the IP bus. This may cause variation in
the coupling factor from the primary current loop of the pack-
age to the IC, and may reduce the overall creepage distance in
application.
Zero Current Offset Ratiometry
Ratiometric error for Zero Current Offset may be calculated using
the following equation:
V
CC
=
ERAT(Q)
V
– V
×
IOUT(Q)VCC
IOUT(Q)VCC(N)
V
It is best practice for the current to approach the IC parallel to the
current-carrying pins, and for the current-carrying trace to not
creep towards the center of the package. Refer to Figure 10.
CC(N)
Where VCC(N) is equal to the nominal VCC (3.3 V, or 5.0 V) and
VIOUT(Q)VCC(N) is the measured Zero Current Offset voltage at
nominal VCC for a particular device. The symbol VCC is the mea-
sured VCC value in application and VIOUT(Q)VCC is the measured
zero current offset voltage for a particular device.
DO
DO NOT
Estimating Total Error vs. Sensed Current
The performance characteristics tables give distribution
(±3 sigma) values for Total Error at IPR(MAX); however, one may
be interested in the expected error at a particular current. This
error may be estimated using the distribution data for the com-
ponents of Total Error, Sensitivity Error, and Offset Voltage. The
±3 sigma value for Total Error (ETOT) as a function if the sensed
current is estimated as:
Figure 10: Best Practice Layout Techniques
for Current Traces
If current must approach the package from the side, it is rec-
ommended to reduce the angle as much as possible. For more
information on best current sensor layout practices refer to the
application note “Techniques to Minimize Common-Mode Field
Interference When Using Allegro Current Sensor ICs” on the
Allegro website.
2
100 × VOE
(Sens × I )
2
ETOT (IP) = ESENS
+
P
where ESENS and VOE are the ±3 sigma values for those error
terms.
18
Allegro MicroSystems
955 Perimeter Road
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www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
The thermal capacity of the ACS732/3 should be verified by the end
user in the application’s specific conditions. The maximum junction
temperature, TJ(MAX), should not be exceeded. Further information
on this application testing is available in the DC and Transient Cur-
rent Capability application note on the Allegro website.
Thermal Rise vs. Primary Current
Self-heating due to the flow of current should be considered dur-
ing the design of any current sensing system. The sensor, printed
circuit board (PCB), and contacts to the PCB will generate heat
as current moves through the system.
ASEK73x Evaluation Board Layout
The thermal response is highly dependent on PCB layout, copper
thickness, cooling techniques, and the profile of the injected current.
The current profile includes peak current, current “on-time”, and
duty cycle. While the data presented in this section was collected
with direct current (DC), these numbers may be used to approximate
thermal response for both AC signals and current pulses.
Thermal data shown in Figure 11 was collected using the
ASEK73x Evaluation Board (TED-0002717). This board
includes 1500 mm2 of 2 oz. (0.0694 mm) copper connected to
pins 1 through 4 and pins 5 through 8, with thermal vias con-
necting the layers. Top and bottom layers of the PCB are shown
below in Figure 13.
The plot in Figure 11 shows the measured rise in steady-state
die temperature of the ACS732/3 versus continuous current at an
ambient temperature, TA, of 25°C. The thermal offset curves may
be directly applied to other values of TA. Conversely, Figure 12
shows the maximum continuous current at a given TA. Surges
beyond the maximum current listed in Figure 12 are allowed
given the maximum junction temperature, TJ(MAX) (165℃), is
not exceeded.
Figure 11: Self Heating in the MA Package
Due to Current Flow
Figure 13: Top and Bottom Layers
for ASEK73x Evaluation Board
Gerber files for the ASEK73x evaluation board are available for
download from our website. Please see the technical documents
section of the ACS733 and ACS732 device webpage.
Figure 12: Maximum Continuous Current
at a Given TA
19
Allegro MicroSystems
955 Perimeter Road
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ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
NOT TO SCALE
All dimensions in millimeters.
9.54
0.65
1.27
Package Outline
2.25
7.25
17.27
Current
In
Current
Out
Perimeter holes for stitching to the other,
matching current trace design, layers of
the PCB for enhanced thermal capability.
21.51
Figure 14: High-Isolation PCB Layout
20
Allegro MicroSystems
955 Perimeter Road
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www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
PACKAGE OUTLINE DRAWING
10.30 ±0.20
8°
0°
16
0.33
0.20
D2
D
D1
7.50 ±0.10 10.30 ±0.33
1.407 0.454
A
D
D
1.40 REF
1
2
1.27
0.40
Branded Face
0.25 BSC
SEATING PLANE
GAUGE PLANE
16×
C
SEATING
PLANE
0.10
C
1.27 BSC
2.65 MAX
0.51
0.31
0.30
0.10
ACS732 (5 V)
ACS733 (3.3 V)
ACS732
Lot Number
ACS733
Lot Number
For Reference Only; not for tooling use (reference MS-013AA)
Dimensions in millimeters
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
1
1
Terminal #1 mark area
A
B
Standard Branding Reference View
B
Branding scale and appearance at supplier discretion
C
Line 1: Part Number
Line 2: First 9 characters of Assembly Lot Number
Reference land pattern layout (reference IPC7351
SOIC127P600X175-8M); all pads a minimum of 0.20 mm from all
adjacent pads; adjust as necessary to meet application process
requirements and PCB layout tolerances
Hall elements (D1, D2); not to scale
D
1.27
1.27
0.65
16
0.65
16
1.65
2.25
9.75
9.50
1
2
1
2
PCB Layout Reference View
High-Isolation PCB Layout Reference View
C
Figure 15: Package MA, 16-Pin SOICW
21
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ACS732KMA and
ACS733KMA
1 MHz Bandwidth, Galvanically Isolated
Current Sensor IC in SOIC-16 Package
Revision History
Number
Date
Description
–
1
February 8, 2019
May 13, 2019
Initial release
Updated Isolation Characteristics table (page 2)
Added Maximum Continuous Current to Absolute Maximum Ratings table (page 2),
ESD ratings table (page 3), and updated thermal data section (page 18)
2
3
August 22, 2019
September 10, 2019 Added Hall plate dimensions (page 20).
Corrected Reverse VOC Voltage value (page 2); added Distance Through Insulation and Comparative
Tracking Index to Isolation Characteristics table (page 3); updated Rise Time, Response Time, Propagation
Delay, and Output Slew Rate test conditions, and added Output Slew Rate (page 5); updated Typical
Frequency Response plots (page 11).
4
December 20, 2019
5
6
September 4, 2020 Updated UL Certificate number (page 1).
Added ACS732KMATR-75AB-T variant; updated UL certification status and Isolation Characteristics table
(pages 1, 3).
October 7, 2020
Copyright 2020, Allegro MicroSystems.
Allegro MicroSystems reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit
improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the
information being relied upon is current.
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of
Allegro’s product can reasonably be expected to cause bodily harm.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor
for any infringement of patents or other rights of third parties which may result from its use.
Copies of this document are considered uncontrolled documents.
For the latest version of this document, visit our website:
www.allegromicro.com
22
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