ACS750XCA-100 [ALLEGRO]
Industrial systems, Motor control, Power conversion, Battery monitors Automotive systems; 工业系统，电机控制，功率转换，电池监控汽车系统
| 型号： | ACS750XCA-100 |
| 厂家： | 
ALLEGRO MICROSYSTEMS |
| 描述： | Industrial systems, Motor control, Power conversion, Battery monitors Automotive systems |
| 文件： | 总12页 (文件大小：507K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Current Sensor: ACS750xCA-100
The Allegro ACS75x family of current sensors provides economical and
precise solutions for current sensing in industrial, automotive, commercial, and
communications systems. The device package allows for easy implementation
by the customer. Typical applications include motor control, load detection and
management, power supplies, and overcurrent fault protection.
4
5
The device consists of a precision, low-offset linear Hall sensor circuit with a
copper conduction path located near the die. Applied current flowing through
this copper conduction path generates a magnetic field which is sensed by the
integrated Hall IC and converted into a proportional voltage. Device accuracy
3
is optimized through the close proximity of the magnetic signal to the Hall
transducer. A precise, proportional voltage is provided by the low-offset, chopper-
stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.
2
1
Pin 1: VCC
Pin 2: Gnd
Pin 3: Output
Terminal 4: Ip+
Terminal 5: Ip-
The output of the device has a positive slope (>VCC/2) when an increasing
current flows through the primary copper conduction path (from terminal 4 to
terminal 5), which is the path used for current sensing. The internal resistance of
this conductive path is typically 130 µΩ, providing low power loss. The thickness
of the copper conductor allows survival of the device at up to 5× overcurrent
conditions. The terminals of the conductive path are electrically isolated from the
sensor leads (pins 1 through 3). This allows the ACS75x family of sensors to be
used in applications requiring electrical isolation without the use of opto-isolators
or other costly isolation techniques.
ABSOLUTE MAXIMUM RATINGS
Operating Temperature
S .....................................................–20 to +85ºC
E.....................................................–40 to +85ºC
Supply Voltage, Vcc...........................................16 V
Reverse Supply Voltage, VRCC ........................–16 V
Output Voltage ...................................................16 V
Reverse Output Voltage, VROUT......................–0.1 V
Output Current Source..................................... 3 mA
Output Current Sink........................................10 mA
Maximum Storage Temperature...........–65 to 170°C
Maximum Junction Temperature .................... 165°C
The device is fully calibrated prior to shipment from the factory. The ACS75x
family is lead-free. All leads are coated with 100% matte tin, and there is no lead
inside the package. The heavy gauge leadframe is made of oxygen-free copper.
Features and Benefits
• Monolithic Hall IC for high reliability
• Single +5 V supply
• 3 kVRMS isolation voltage between terminals 4/5 and pins 1/2/3
• Lead-free
Always order by complete part number:
• Automotive temperature range available
• End-of-line factory-trimmed for gain and offset
• Ultra-low power loss: 130 µΩ internal conductor resistance
• Ratiometric output from supply voltage
• Extremely stable output offset voltage
• Small package size, with easy mounting capability
• Output proportional to ac and dc currents
ACS750SCA-100
ACS750ECA-100
Applications
• Industrial systems
• Motor control
TÜV America
• Power conversion
• Battery monitors
• Automotive systems
Certificate Number:
U8V 04 11 54214 002
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
Functional Block Diagram
+5 V
IP–
Terminal 5
VCC
Pin 1
Voltage
Regulator
To all subcircuits
VOUT
Pin 3
Amp
Out
0.1 µF
Temperature
Coefficient
Gain
Offset
Trim Control
IP+
Terminal 4
GND
Pin 2
2
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
ELECTRICAL CHARACTERISTICS, over temperature unless otherwise stated
Characteristic
Primary Sensed Current
Supply Voltage
Symbol
Test Conditions
Min.
–100
4.5
–
Typ.
–
Max.
100
5.5
10
2
Units
A
IP
VCC
5.0
7
V
Supply Current
ICC
VCC = 5.0 V, output open
IOUT = 1.2 mA
mA
Ω
Output Resistance
ROUT
CLOAD
RLOAD
RPRIMARY
VISO
–
1
Output Capacitance Load
Output Resistive Load
Primary Conductor Resistance
Isolation Voltage
VOUT to GND
–
–
10
–
nF
kΩ
µΩ
kV
VOUT to GND
4.7
–
–
IP = ±100A, TA = +25°C
Pins 1-3 and 4-5, 60 Hz, 1 minute
130
–
–
3.0
–
PERFORMANCE CHARACTERISTICS, -20°C to +85°C, VCC = 5 V unless otherwise specified
Propagation time
Response time
tPROP
IP = ±50 A, TA = +25°C
–
–
4
–
–
µs
µs
tRESPONSE IP = ±50 A, TA = +25°C
27
Rise time
tr
f
IP = ±50 A, TA = +25°C
–
26
–
µs
Frequency Bandwidth
–3 dB, TA = 25°C
–
13
19.75
–
–
kHz
Over full range of IP, TA = 25°C
Over full range of IP
18.75
17.5
20.75
21.5
mV/A
mV/A
Sensitivity
Noise
Sens
Peak-to-peak, TA = 25°C
External filter BW = 24 kHz
VNOISE
–
7
–
mV
Nonlinearity
ELIN
ESYM
Over full range of IP
Over full range of IP
I = 0 A, TA = 25°C
–
97
–
–
100
VCC /2
–
±5
103
–
%
%
Symmetry
Zero Current Output Voltage
VOUT(Q)
V
I = 0 A, TA = 25°C
–40
–50
–
40
mV
mV
A
Electrical Offset Voltage
(Magnetic error not included)
VOE
IERROM
ETOT
I = 0 A
–
50
Magnetic Offset Error
I = 0 A, after excursion of 100 A
Over full range of IP, TA = 25°C
Over full range of IP
±0.3
±1.5
–
±0.8
–
–
%
Total Output Error
(Including all offsets)
–
±13
%
PERFORMANCE CHARACTERISTICS, -40°C to +85°C, VCC = 5 V unless otherwise specified
Propagation time
Response time
Rise time
tPROP
IP = ±50 A, TA = +25°C
–
–
4
27
–
–
µs
µs
tRESPONSE IP = ±50 A, TA = +25°C
tr
f
IP = ±50 A, TA = +25°C
–3 dB, TA = 25°C
–
26
–
µs
Frequency Bandwidth
–
13
–
kHz
mV/A
mV/A
Over full range of IP, TA = 25°C
Over full range of IP
18.75
17.5
19.75
–
20.75
21.5
Sensitivity
Noise
Sens
Peak-to-peak; T = +25°C
External filter BW = 40 kHz
VNOISE
–
7
–
mV
Nonlinearity
ELIN
ESYM
Over full range of IP
Over full range of IP
I = 0 A
–
97
–
–
100
VCC /2
–
±5
103
–
%
%
Symmetry
Zero Current Output Voltage
VOUT(Q)
V
I = 0 A, TA = 25°C
I = 0 A
–40
–60
–
40
mV
mV
A
Electrical Offset Voltage
(Magnetic error not included)
VOE
IERROM
ETOT
–
60
Magnetic Offset Error
I = 0 A, after excursion of 100 A
Over full range of IP, TA = 25°C
Over full range of IP
0.3
±1.5
–
±0.8
–
–
%
Total Output Error
(Including all offsets)
–
±15
%
3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ACS750100-DS Rev. 6
Current Sensor: ACS750xCA-100
Typical Performance Characteristics
Supply Current
Vcc = 5 V
Sensitivity
Vcc = 5 V
8
7.8
7.6
7.4
7.2
7
25
20
15
10
5
–40 C
–20 C
25 C
6.8
6.6
6.4
6.2
6
85 C
0
-50
-25
0
25
50
75
100
125
150
-100
-75
-50
-25
25
50
75
100
Temperature (°C)
Primary Current (A)
Symmetry
Vcc = 5 V
V
out
vs Primary Current
Vcc = 5 V
100.5
100.4
100.3
100.2
100.1
100
4.5
4
Ip = 100 A
3.5
3
2.5
2
99.9
–40 C
–20 C
25 C
85 C
99.8
1.5
1
99.7
99.6
99.5
0.5
-50
-25
0
25
50
75
100
-100
-75
-50
-25
0
25
50
75
100
Temperature (ºC)
Primary Current (A)
Non-Linearity
Vcc = 5 V
Non-Linearity
Vcc = 5 V
5
4.5
4
5
4.5
4
Ip = 100 A
3.5
3
3.5
3
Ip = –100 A
2.5
2
2.5
2
1.5
1
1.5
1
0.5
0
0.5
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature (°C)
Temperature (°C)
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ACS750100-DS Rev. 6
Current Sensor: ACS750xCA-100
Typical Performance Characteristics
Magnetic Offset
Vcc = 5 V
1
0.8
0.6
0.4
0.2
0
I = 0 A, after excursion to 100 A
-0.2
-0.4
-0.6
-0.8
-1
-50
-25
0
25
50
75
100
Temperature ( C)
0 Ampere Accuracy Error
Vcc = 5 V
Without Offset
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-50
-25
0
25
50
75
100
Temperature ( C)
5
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
Definitions of Accuracy Characteristics
Sensitivity (Sens): The change in sensor output in response to a 1A change through the primary conductor. The sensitivity is the
product of the magnetic circuit sensitivity (G/A) and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is trimmed at the
factory to optimize the sensitivity (mV/A) for the full-scale current of the device.
Noise (VNOISE): The product of the linear IC amplifier gain (mV/G) and the noise floor for the Allegro Hall effect linear IC (≈1 G).
The noise floor is derived from the thermal and shot noise observed in Hall elements. Dividing the noise (mV) by the sensitivity (mV/
A) provides the smallest current that the device is able to resolve.
Linearity (ELIN): The degree to which the voltage output from the sensor varies in direct proportion to the primary current through
its full-scale amplitude. Linearity reveals the maximum deviation from the ideal transfer curve for this transducer. Nonlinearity in the
output can be attributed to the gain variation across temperature and saturation of the flux concentrator approaching the full-scale cur-
rent. The following equation is used to derive the linearity:
V
– VOUT(Q)
∆ gain × % sat (
out_full-scale amperes
– VOUT(Q)
100
1–
{
[
) [ {
)
2 (V
out_half-scale amperes
where
∆ gain = the gain variation as a function of temperature changes from 25ºC,
% sat = the percentage of saturation of the flux concentrator, which becomes significant as the current
being sensed approaches full-scale ±IP , and
Vout_full-scale amperes = the output voltage (V) when the sensed current approximates full-scale ±IP .
Symmetry (ESYM): The degree to which the absolute voltage output from the sensor varies in proportion to either a positive or nega-
tive full-scale primary current. The following equation is used to derive symmetry:
V
–VOUT(Q)
out_+full-scale amperes
100
[
[
VOUT(Q) –V
out_–full-scale amperes
Quiescent output voltage (VOUT(Q)): The output of the sensor when the primary current is zero. For a unipolar supply voltage, it
nominally remains at VCC ⁄ 2. Thus, VCC = 5 V translates into VOUT(Q) = 2.5 V. Variation in VOUT(Q) can be attributed to the resolution
of the Allegro linear IC quiescent voltage trim, magnetic hysteresis, and thermal drift.
Electrical offset voltage (VOE): The deviation of the device output from its ideal quiescent value of VCC ⁄ 2 due to nonmagnetic causes.
Magnetic offset error (IERROM): The magnetic offset is due to the residual magnetism (remnant field) of the core material. The mag-
netic offset error is highest when the magnetic circuit has been saturated, usually when the device has been subjected to a full-scale or
high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger mag-
netic offsets are observed at the lower operating temperatures.
Accuracy (ETOT): The accuracy represents the maximum deviation of the actual output from its ideal value. This is also known as the
total ouput error. The accuracy is illustrated graphically in the Output Voltage versus Current chart on the following page.
Accuracy is divided into four areas:
• 0 A at 25°C: Accuracy of sensing zero current flow at 25°C, without the effects of temperature.
• 0 A over temperature: Accuracy of sensing zero current flow including temperature effects.
• Full-scale current at 25°C: Accuracy of sensing the full-scale current at 25°C, without the effects of temperature.
• Full-scale current over ∆ temperature: Accuracy of sensing full-scale current flow including temperature effects.
6
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
Output voltage vs. current, illustrating sensor accuracy at 0 A and at full-scale current
Increasing VOUT (V)
Accuracy
Over ∆Temperature
Accuracy
25°C Only
Average
VOUT
Accuracy
Over ∆Temperature
Accuracy
25°C Only
100 A
–100 A
–IP (A)
+IP (A)
Full Scale
0 A
Accuracy
25°C Only
Accuracy
Over ∆Temperature
Decreasing VOUT (V)
7
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
Definitions of Dynamic Response Characteristics
Propagation delay (tPROP): The time required for the sensor output to reflect a change in the primary current
signal. Propagation delay is attributed to inductive loading within the linear IC package, as well as in the induc-
tive loop formed by the primary conductor geometry. Propagation delay can be considered as a fixed time offset
and may be compensated.
Primary Current
I (%)
90
Transducer Output
0
t
Propagation Time, tPROP
Response time (tRESPONSE): The time interval between a) when the primary current signal reaches 90% of its
final value, and b) when the sensor reaches 90% of its output corresponding to the applied current.
Primary Current
I (%)
90
Transducer Output
0
t
Response Time, t
RESPONSE
Rise time (tr): 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. The rise time to a step response is used to derive the bandwidth of the
current sensor, in which ƒ(–3 dB) = 0.35/tr. Both tr and tRESPONSE are detrimentally affected by eddy current
losses observed in the conductive IC ground plane and, to varying degrees, in the ferrous flux concentrator
within the current sensor package.
Primary Current
I (%)
90
Transducer Output
10
0
t
Rise Time, t
r
8
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
Standards and Physical Specifications
Parameter
Specification
UL recognized to UL 94V-0
Flammability (package molding compound)
Safety
UL recognized to EN 50178
UL60950-1:2003
Fire and Electric Shock
EN60950-1:2001
CAN/CSA C22.2 No. 60950-1:2003
Creepage distance, current terminals to sensor pins
Clearance distance, current terminals to sensor pins
Package mass
7.25 mm
7.25 mm
4.18 g typical
Peak to Peak Noise, applying low-pass filter to ACS750 output
Low Pass Filter Break Frequency
Typical Peak to Peak Noise
Unfiltered
1.4 MHz
24 kHz
22.7 mV
21 mV
7.1 mV
Step Response, IPRIMARY = 0 to 50 A
ACS750 Output (mV)
Applied Step (A)
9
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ACS750100-DS Rev. 6
Current Sensor: ACS750xCA-100
Device Branding Key (Two alternative styles are used)
ACS
750
T
Allegro Current Sensor
Device family number
Operating ambient temperature range code [S or E]
Package type designator
ACS750
TCA100
YYWWA
CA
100
YY
Maximum measurable current
Manufacturing date code: Calendar year (last two digits)
Manufacturing date code: Calendar week
Manufacturing date code: Shift code
Allegro Current Sensor
WW
A
ACS
750
T
Device family number
Operating ambient temperature range code [S or E]
Package type designator
ACS750
TCA100
L...L
CA
100
L...L
YY
Maximum measurable current
YYWW
Manufacturing lot code
Manufacturing date code: Calendar year (last two digits)
Manufacturing date code: Calendar week
WW
10
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
Package CA
11
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
Current Sensor: ACS750xCA-100
The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889;
5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending.
Allegro MicroSystems, Inc. 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 products are not authorized for use as critical components in life-support devices or systems without express written approval.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its
use; nor for any infringement of patents or other rights of third parties which may result from its use.
Copyright © 2004, 2005 AllegroMicrosystems, Inc.
12
115 Northeast Cutoff, Box 15036
ACS750100-DS Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
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