CZ-3A 系列

Clearance, Creepage distance ≧ 8.0mm
3.3V Output, High Accuracy
Coreless Current Sensor ICs
supporting 50Arms

CZ-3A01, CZ-3A02, CZ-3A03, CZ-3A04, CZ-3A05, CZ-3A06, CZ-3A07

CZ-3AG1, CZ-3AG2, CZ-3AG3, CZ-3AG4, CZ-3AG5, CZ-3AG6, CZ-3AG7

Corresponding to the UL safety standard UL61800-5-1 for industrial equipment, AKM has developed the CZ-3A series coreless current sensor ICs, which achieves both creepage distance and clearance greater than 8.0mm.

With a wide current detection lineup, and two overcurrent detection circuits, the CZ-3A series can be used for inverter control which detects overcurrent while controlling phase current.

Applications

  • AC motors
  • DC motors
  • UPS's
  • General Inverter (Drives)
  • Power conditioner (DC side)

It is suitable for the application which requires insulation and achieve small size with low heat generation.

Features

3.3V output

The CZ-3A series supports 3.3V output. It is best for a sensor signal input to a 3.3V AD converter.

In addition, this series has both VDD  5V and 3.3V products as below.
VDD=5V, Output=3V
VDD=3.3V, Output=3.3V

Creepage distance/Clearance ≧ 8mm

By developing AKM's original package, both creepage distance and clearance of 8.0mm or more is achieved. It supports a Working Voltage of 600Vrms (with reinforced insulation), making insulation design easy.

Support wide current range and 50Arms Low-heat Generation

CZ-3A series has a low resistance of 0.27mΩ as the primary conductor resistance with AKM's original package. As a result, compared to shunt resistors and similar products of other companies, heat generation when applying the current can be greatly suppressed, and 50Arms continuous current is achieved. Furthermore, availability with wide current detection ranges is available. This enables to adopt common design of system boards, making it easy to roll it out to other models with different ratings.

Overcurrent detection function

The CZ-3A series has two overcurrent detection circuit, and each overcurrent detection threshold can be adjusted from the outside. Therefore, it makes easier to design the protection of the system.

CZ-3A0x
CZ-3AGx

产品系列

CZ-3A 系列

Product
Name
Supply
Voltage
(V)
Output
Voltage
(V)
Linear
Sensing
Range
(A)
Sensitivity
(mV/A)
Temperature
Drift of
Sensitivity
(%) *1
Temperature
Drift of
Zero-Current
Output
(mV) *1
Total
Accuracy
(%F.S.) *2
Response
Time
(μs)
Overcurrent detection 1 Overcurrent detection 2
Threshold 1
Adjustable
Range Max
(A)
Response
time
(μs)
Threshold 2
Adjustable 
Range Max
(A)
Response 
time
(μs)
CZ-3A01 3.3 3.3 ±12.9 120
±0.6 ±2.8

0.2
(Typ.)

0.4
(Max.)

1 14.5

4.5
(Typ.)

5.5
(Max.)

29.1

1.5
(Typ.)

2.5
(Max.)

CZ-3A02 ±15.5 100
17.5 35.0
CZ-3A03 ±22.1 70
25.0 50.0
CZ-3A04 ±32.2 48
36.4 72.9
CZ-3A05 ±64.5 24
72.9 145.8
CZ-3A06 ±103.3 15
116.6 233.3
CZ-3A07 ±129.1 12 145.8 291.6
Product
Name
Supply
Voltage
(V)
Output
Voltage
(V)
Linear
Sensing
Range
(A)
Sensitivity
(mV/A)
Temperature
Drift of
Sensitivity
(%) *1
Temperature
Drift of
Zero-Current
Output
(mV) *1
Total
Accuracy
(%F.S.) *2
Response
Time
(μs)
Overcurrent detection 1 Overcurrent detection 2
Threshold 1
Adjustable
Range Max
(A)
Response
time
(μs)
 
Threshold 2
Adjustable
Range Max
(A)
Response
time
(μs)
CZ-3AG1 5.0 3.0 ±11.6 120
±0.6 ±2.8

0.2
(Typ.)

0.4
(Max.)

3.6 14.5

5.5
(Typ.)

6.7
(Max.)

29.1

2.5
(Typ.)

3.7
(Max.)

CZ-3AG2 ±14.0 100 17.5 35.0
CZ-3AG3 ±20.0 70 25.0 50.0
CZ-3AG4 ±29.1 48 36.4 72.9
CZ-3AG5 ±58.3 24 72.9 145.8
CZ-3AG6 ±93.3 15 116.6 233.3
CZ-3AG7 ±116.6 12 145.8 291.6

*1  It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.

*2  The typical value is defined as the “average value ± 1σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.  In the same manner, the minimum and maximum values are defined as the “average value ± 3σ” of the actual measurement result (Ta = 35 to 85 °C) in a certain lot.

Certified with safety standards

相关内容

选型表

Supply
Voltage
(V)
Output
Voltage
(V)
Effective
Current
(Arms)
Measurement
Range
(Apeak)
Bipolar /
Unipolar
Creepage
Clearance
(mm)
Working
Voltage *
(V)
Product Name Product Series
5.0 5.0 60 ± 5.3 to ± 180
Bipolar ≧ 8 800 CZ370x CZ37 Series
0 to 345.2 Unipolar CZ372x 
3.0 50 ± 11.6 to ± 166.6 Bipolar CZ3AGx CZ3A Series
3.3 3.3 ± 12.9 to ± 129.1 CZ3A0x
5.0 5.0 40 ± 33 to ± 60 ≧ 7.2 715 CZ381x CZ38 Series
5.0 5.0 20 ± 4.5 to ± 42 Bipolar
Unipolar
≧ 5 500 CQ330x CQ3 Series
3.3 3.3 ± 8.5 to ± 44 CQ320x
5.0 5.0 ± 10.7 to ± 42 AK310x AK31 Series

* Pollution Degree II with reinforced insulation