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首页ACS772:高精度双向电流传感器,适用于电机控制与故障检测
ACS772:高精度双向电流传感器,适用于电机控制与故障检测
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更新于2024-07-02
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英文版ACS772规格书详细介绍了Allegro公司的高性能电流传感器集成电路(IC)系列——ACS772。该系列专为交流(AC)和直流(DC)电流测量设计,适用于电机控制、负载检测与管理、电源供应以及DC-DC转换器和逆变器控制等场合,特别适合于对安全性和精度有高要求的应用。 ACS772的核心功能是提供线性输出信号VOUT,这个电压与通过其内置精确低偏移霍尔效应电路的双向交流或直流初级感应电流IP成正比。为了优化噪声管理,它配备了可调的RF(参考频率)和CF(补偿因子),这两个参数根据具体应用进行调整,确保设备在各种条件下仍能保持最佳性能。 这款电流传感器的响应时间仅为2.5微秒,这对于需要快速过流故障检测的安全关键应用至关重要。它的设计特点在于集成了一款高精度的、低偏移的、采用跳频稳定技术的BiCMOS霍尔元件,这种特性使得在工厂阶段即可进行精确度编程,无需用户现场校准。 其工作原理是当电流通过靠近芯片的铜导通路径时,会生成磁场,霍尔元件将此磁场转换为与其成比例的电压输出。通过磁信号与霍尔转换器的紧密接近,进一步提升了设备的测量精度。ACS772以其经济性、高精度和快速响应,为工程师们提供了在各种复杂电子系统中实现高效电流监控的理想选择。
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High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth,
Galvanically Isolated Current Sensor IC with 100 µΩ Current Conductor
ACS772
8
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
X050B PERFORMANCE CHARACTERISTICS: T
A
= –40°C to 150°C
[1]
, V
CC
= 5 V, unless otherwise specied
Characteristic Symbol Test Conditions Min. Typ.
[2]
Max. Unit
NOMINAL PERFORMANCE
Current Sensing Range I
PR
–50 – 50 A
Sensitivity Sens I
PR(min)
< I
P
< I
PR(max)
–
40 ×
V
CC
/ 5
– mV/A
Zero Current Output Voltage V
IOUT(Q)
Bidirectional; I
P
= 0 A – V
CC
/ 2 – V
ACCURACY PERFORMANCE
Noise V
N
T
A
= 25°C, C
L
= 1 nF – 20.4 – mV
p-p
T
A
= 25°C, C
L
= 1 nF – 3.4 – mV
RMS
Sensitivity Error E
Sens
Full scale of I
P
, T
A
= 25°C –1 ±0.7 1 %
Full scale of I
P
, T
A
= 25°C to 150°C –1.25 ±0.8 1.25 %
Full scale of I
P
, T
A
= –40°C to 25°C –3.5 ±1.7 3.5 %
Electrical Offset Error
V
OE(TA)
I
P
= 0 A, T
A
= 25°C –8 ±4 8 mV
V
OE(TA)HT
I
P
= 0 A, T
A
= 25°C to 150°C –8 ±4 8 mV
V
OE(TA)LT
I
P
= 0 A, T
A
= –40°C to 25°C –20 ±6 20 mV
Magnetic Offset Error I
ERROM
I
P
= 0 A, T
A
= 25°C, after excursion of I
PR(max)
– 210 250 mA
Total Output Error
E
TOT(HT)
Full scale of I
P
, T
A
= 25°C to 150°C –1.5 ±0.9 1.5 %
E
TOT(LT)
Full scale of I
P
, T
A
= –40°C to 25°C –3.5 ±1.7 3.5 %
LIFETIME ACCURACY CHARACTERISTICS
[3]
Sensitivity Error Including Lifetime
E
Sens(LIFE)(HT)
T
A
= 25°C to 150°C –2.1 ±1.6 2.1 %
E
Sens(LIFE)(LT)
T
A
= –40°C to 25°C –3.5 ±2.5 3.5 %
Total Output Error Including Lifetime
E
TOT(LIFE)(HT)
T
A
= 25°C to 150°C –2.1 ±1.7 2.1 %
E
TOT(LIFE)(LT)
T
A
= –40°C to 25°C –3.5 ±2.6 3.5 %
Electric Offset Error Including Lifetime
E
OFF(LIFE)(HT)
T
A
= 25°C to 150°C –10 ±7 10 mV
E
OFF(LIFE)(LT)
T
A
= –40°C to 25°C –20 ±8.9 20 mV
[1]
All ACS772 devices are production tested and guaranteed to T
A
= 150°C, provided the Maximum Junction Temperature, T
J(MAX)
, is not exceeded. See Absolute Maximum
Ratings and Thermal Application section of this datasheet for more information.
[2]
Typical values are ±3 sigma values.
[3]
Min/max limits are derived from AEC-Q100 Grade 1 testing.
![](https://csdnimg.cn/release/download_crawler_static/85924312/bg9.jpg)
High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth,
Galvanically Isolated Current Sensor IC with 100 µΩ Current Conductor
ACS772
9
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
X100U PERFORMANCE CHARACTERISTICS: T
A
= –40°C to 150°C
[1]
, V
CC
= 5 V, unless otherwise specied
Characteristic Symbol Test Conditions Min. Typ.
[2]
Max. Unit
NOMINAL PERFORMANCE
Current Sensing Range I
PR
0 – 100 A
Sensitivity Sens I
PR(min)
< I
P
< I
PR(max)
–
40 ×
V
CC
/ 5
– mV/A
Zero Current Output Voltage V
IOUT(Q)
Unidirectional; I
P
= 0 A – V
CC
/ 10 – V
ACCURACY PERFORMANCE
Noise V
N
T
A
= 25°C, C
L
= 1 nF – 20.4 – mV
p-p
T
A
= 25°C, C
L
= 1 nF – 3.4 – mV
RMS
Sensitivity Error E
Sens
Full scale of I
P
, T
A
= 25°C –1 ±0.7 1 %
Full scale of I
P
, T
A
= 25°C to 150°C –1.25 ±0.8 1.25 %
Full scale of I
P
, T
A
= –40°C to 25°C –3.5 ±1.7 3.5 %
Electrical Offset Error
V
OE(TA)
I
P
= 0 A, T
A
= 25°C –8 ±4 8 mV
V
OE(TA)HT
I
P
= 0 A, T
A
= 25°C to 150°C –8 ±4 8 mV
V
OE(TA)LT
I
P
= 0 A, T
A
= –40°C to 25°C –20 ±6 20 mV
Magnetic Offset Error I
ERROM
I
P
= 0 A, T
A
= 25°C, after excursion of I
PR(max)
– 280 400 mA
Total Output Error
E
TOT(HT)
Full scale of I
P
, T
A
= 25°C to 150°C –1.5 ±0.9 1.5 %
E
TOT(LT)
Full scale of I
P
, T
A
= –40°C to 25°C –3.5 ±1.7 3.5 %
LIFETIME ACCURACY CHARACTERISTICS
[3]
Sensitivity Error Including Lifetime
E
Sens(LIFE)(HT)
T
A
= 25°C to 150°C –2.1 ±1.6 2.1 %
E
Sens(LIFE)(LT)
T
A
= –40°C to 25°C –3.5 ±2.5 3.5 %
Total Output Error Including Lifetime
E
TOT(LIFE)(HT)
T
A
= 25°C to 150°C –2.1 ±1.7 2.1 %
E
TOT(LIFE)(LT)
T
A
= –40°C to 25°C –3.5 ±2.6 3.5 %
Electric Offset Error Including Lifetime
E
OFF(LIFE)(HT)
T
A
= 25°C to 150°C –10 ±7 10 mV
E
OFF(LIFE)(LT)
T
A
= –40°C to 25°C –20 ±8.9 20 mV
[1]
All ACS772 devices are production tested and guaranteed to T
A
= 150°C, provided the Maximum Junction Temperature, T
J(MAX)
, is not exceeded. See Absolute Maximum
Ratings and Thermal Application section of this datasheet for more information.
[2]
Typical values are ±3 sigma values.
[3]
Min/max limits are derived from AEC-Q100 Grade 1 testing.
![](https://csdnimg.cn/release/download_crawler_static/85924312/bga.jpg)
High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth,
Galvanically Isolated Current Sensor IC with 100 µΩ Current Conductor
ACS772
10
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
X100B PERFORMANCE CHARACTERISTICS: T
A
= –40°C to 150°C
[1]
, V
CC
= 5 V, unless otherwise specied
Characteristic Symbol Test Conditions Min. Typ.
[2]
Max. Unit
NOMINAL PERFORMANCE
Current Sensing Range I
PR
–100 – 100 A
Sensitivity Sens I
PR(min)
< I
P
< I
PR(max)
–
20 ×
V
CC
/ 5
– mV/A
Zero Current Output Voltage V
IOUT(Q)
Bidirectional; I
P
= 0 A – V
CC
/ 2 – V
ACCURACY PERFORMANCE
Noise V
N
T
A
= 25°C, C
L
= 1 nF – 20.4 – mV
p-p
T
A
= 25°C, C
L
= 1 nF – 3.4 – mV
RMS
Sensitivity Error E
Sens
Full scale of I
P
, T
A
= 25°C –1 ±0.7 1 %
Full scale of I
P
, T
A
= 25°C to 150°C –1.25 ±0.8 1.25 %
Full scale of I
P
, T
A
= –40°C to 25°C –3.5 ±1.7 3.5 %
Electrical Offset Error
V
OE(TA)
I
P
= 0 A, T
A
= 25°C –8 ±4 8 mV
V
OE(TA)HT
I
P
= 0 A, T
A
= 25°C to 150°C –8 ±4 8 mV
V
OE(TA)LT
I
P
= 0 A, T
A
= –40°C to 25°C –20 ±6 20 mV
Magnetic Offset Error I
ERROM
I
P
= 0 A, T
A
= 25°C, after excursion of I
PR(max)
– 175 400 mA
Total Output Error
E
TOT(HT)
Full scale of I
P
, T
A
= 25°C to 150°C –1.5 ±0.9 1.5 %
E
TOT(LT)
Full scale of I
P
, T
A
= –40°C to 25°C –3.5 ±1.7 3.5 %
LIFETIME ACCURACY CHARACTERISTICS
[3]
Sensitivity Error Including Lifetime
E
Sens(LIFE)(HT)
T
A
= 25°C to 150°C –2.1 ±1.6 2.1 %
E
Sens(LIFE)(LT)
T
A
= –40°C to 25°C –3.5 ±2.5 3.5 %
Total Output Error Including Lifetime
E
TOT(LIFE)(HT)
T
A
= 25°C to 150°C –2.1 ±1.7 2.1 %
E
TOT(LIFE)(LT)
T
A
= –40°C to 25°C –3.5 ±2.6 3.5 %
Electric Offset Error Including Lifetime
E
OFF(LIFE)(HT)
T
A
= 25°C to 150°C –10 ±7 10 mV
E
OFF(LIFE)(LT)
T
A
= –40°C to 25°C –20 ±8.9 20 mV
[1]
All ACS772 devices are production tested and guaranteed to T
A
= 150°C, provided the Maximum Junction Temperature, T
J(MAX)
, is not exceeded. See Absolute Maximum
Ratings and Thermal Application section of this datasheet for more information.
[2]
Typical values are ±3 sigma values.
[3]
Min/max limits are derived from AEC-Q100 Grade 1 testing.
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