WCS2202

WCS2202
Hall Effect Base Linear AC Current Sensor
Features:
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Built-in AC to DC rectifier circuit
8.3 mΩ internal conductor resistance
Output voltage proportional to AC and DC current
Min. sensing current 0~3.0A at 5V voltage supply
High Sensitivity 525 mV/A
Wide operating voltage range 3.0~12 V.
Low operating current 3.3 mA
Nearly zero magnetic hysteresis.
Ratiometric output from supply voltage
13K Hz bandwidth
Functional Description :
The Winson WCS2202 provides economical and precise solution for both
DC and AC current sensing in industrial, commercial and communications
systems. The unique package allows for easy implementation by the customer.
Typical applications include motor control, load detection and management,
over-current fault detection and any intelligent power management system
etc…
The WCS2202 consists of a precise, low-temperature drift linear hall
sensor IC with temperature compensation and AC to DC rectifier circuit and a
current path with 8.3 mΩ typical internal conductor resistance. This extremely
low resistance can effectively reduce power loss, operating temperature and
increase the reliability greatly. Applied current flowing through this conduction
path generates a magnetic field which is sensed by the integrated Hall IC and
converted into a proportional rectified DC voltage.
The terminals of the conductive path are electrically 1,000V isolated from
the sensor leads. This allow the WCS2202 current sensor to be used in
applications requiring electrical isolation without the use of opto-isolators or
other costly isolation techniques and make system more competitive in cost.
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/27
WCS2202
Function Block:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/27
WCS2202
Electrical Characteristics:
(T=+25˚C, Vdd=5.0V )
Characteristic
Min Typ Max Units
Symbol Test Conditions
3.0
─
12
V
IP =0 A
─
3.3
6.0
mA
V0G
Rprimary
IP =0 A
IP =2 A
2.4
─
2.5
8.3
2.6
─
V
mΩ
△Vout
IP= ± 2 A
450
525
600
mV/A
─
0.1
─
A
－
13
－
kHz
－
－
－
±3.0
2.0
±0.7
－
－
－
A
Supply Voltage
Vcc
Supply Current
Isupply
Zero Current Vout
Primary Conductor Resistance
Sensitivity
Current Offset
Ioffset
Bandwidth
─
Vdd=5V
BW
Measurable Current Range
MCR
△Vout
Temperature Drift
Vdd=5V (DC)
Vdd=5V (AC RMS )
Ip =0 A
mV/℃
1.All output-voltage measurements are made with a voltmeter having an input impedance of at least 100kΩ
2. Do not apply any load on output pin, it will degrade IC’s performance.
Electrical Diagram:
Isupply vs. Vdd
6
5
(mA)
4
3
2
1
0
3
4
5
6
7
8
9
10
11
12 V
9
10
11
12 V
V0G vs. Vdd
7
6
5
V
4
3
2
1
0
3
4
5
6
7
8
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/27
WCS2202
Linearity:
Vout v.s. Ip Current (Vdd=5V)
4
Linearity: R² = 0.998
Voltage(V)
3.5
3
2.5
2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Ip Current (A)
1.4
1.6
1.8
2.0
Vout v.s. Ip Current (Vdd=5V)
4
Voltage (V)
3.5
Linearity: R² = 0.9895
3
2.5
2
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
Ip Current (A)
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/27
2.8
3.0A
WCS2202
Sensitivity:
Sensitivity vs. Supply Voltage
( V/A )
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
3
4
5
6
7
8
9
10
11
12V
Sensitivity vs. Supply Voltage
( V/A )
0.6
0.5
0.4
0.3
0.2
0.1
0
3
3.2
3.4
3.6
3.8
4
4.2
4.4
4.6
4.8
5V
Sensitivity standardization vs. Temperature (Vdd=5V, 30 oC)
1.250
1.000
0.750
0.500
0.250
0.000
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90℃
0.892
0.920
0.959
0.985
1.005
1.007
1.005
1.000
0.987
0.970
0.947
0.921
0.889
0.677
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/27
WCS2202
Package Information:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/27