CS4xxxV

Document 132
Current Sense Transformers
These low cost Coilcraft current sensing transformers
are designed for use up to 1 MHz. They incorporate the
current and sense windings in one small, encapsulated
package requiring minimum board space.
Coilcraft current sensing transformers are designed to
meet UL/CSA/IEC 60950 Reinforced Insulation specification and provide 3 mm creepage/clearance between
primary and secondary windings. Winding to winding
isolation (hipot) is 3750 Vrms, tested for one minute.
Applications include feedback control, overload sensing,
detecting load drop or shutdown, and proportional output.
Coilcraft Designer’s Kit P403 contains the three standard current sensing transformers, sensor-only versions
of each, plus two 50/60Hz current sensors. To order,
contact Coilcraft or visit http://order.coilcraft.com.
DCR max FrequencyVolt-time Sensed Terminating
product2current (Ohms)range
Iin resistance RT3
pri sec
(kHz)
(Vµsec)
max (A)
(Ohms)
Inductance1
Turns (N)
Part number
pri : sec
min (mH)
CS4050V-01L
CS4100V-01L
CS4200V-01L
1 : 50
1 : 100
1 : 200
5
20
80
0.001
0.001
0.001
0.7
1.4
4.0
1. Inductance is for the secondary, measured at 15.75 kHz, 1 Vrms.
2. Volt-time product is for the secondary, based on 2000 Gauss.
3. Terminating resistance (RT) value is based on 1 Volt output with 35 Amps
flowing through the primary. Varying terminating resistance increases or
decreases output Voltage/Ampere according to the following equation:
RT = Vout × Nsec / Iin
3 – 1000
2 – 1000
1 – 1000
149
298
596
35
35
35
1.4
2.9
5.7
4. Ambient temperature range –40°C to +85°C.
5. Electrical specifications at 25°C.
CS4xx0V-AL
Typical Circuit
2
I in
Pri
(1 turn)
3
0.75
max
19,05
1
Sec
(N turns)
Vout
RT
XXXX Y
Internal
code
4
Recommended PC Board Layout
(viewed from top)
2
CL
1
0.088
2,23
0.069
1,76
0.20 ±0.005
5,08 ±0,125
CL
3
4
0.30 ±0.005
7,62 ±0,125
0.03
0,76
0.77
max
19,56
3
0.40 ±0.01
10,16 ±0,25
0.105/0.150
2,67/3,81
0.57
max
14,48
4
0.041
1,041
0.052
1,321
1
2
0.060 × 0.460
1,52 × 11,68
Weight:
8.8 – 9.3 g
Terminations: Tin-silver over copper
Packaging:
29 per tube
Document 132 Revised 06/25/15
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