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AKM 소개
CZ375 Series
100Arms compliant
Supports ± 115Apeak ~ ±225Apeak
Ultra-high accuracy
Creepage and clearance 8mm or more
Coreless current sensor IC
Current Sensors
Overview
The CZ375 Series is an ultra-high accuracy coreless current sensor IC of low heat generation that meets UL61800-5-1 of insulating standards in the industrial equipment market with both creepage distance and clearance of 8mm or more.
With the same packaging as the CZ370 Series, the CZ375 Series supports 100Arms, a much higher current.
Suitable for large-current sensing and inverter-control of large-capacity models in various applications such as EV quick-charging stations and packaged air conditioners.
This IC can also contribute to solving customers' problems such as suppressing heat generation, improving system efficiency, and downsizing the system by increasing the switching frequency speed.
Features
The development of our original package realizes a low resistance of 0.27mΩ in primary conductor resistance. As a result, compared with shunt resistors and similar products from other manufacturers, heat generation can be significantly suppressed during the application of current, realizing 100Arms continual energization. In addition, it can detect a wide range of current up to ±225Apeak. The new CZ375 Series enables customers using the conventional CZ370 Series (±180Apeak) to expand the application to larger models with higher current ratings. In addition, the pattern layout can be used as it is since it uses the same packaging as that of CZ370 Series.
Our original packaging design allows both the creepage distance and the space distance to be more than 8mm. The Working Voltage exceeds 550Vrms and can be used with 400V reinforced isolation.
Ultra-high precision current sensor IC with overall accuracy of ± 0.4% F.S (Ta = 0 to 90 ºC Typ, comparable to closed current sensors. It has the same high accuracy as that of the CZ370 Series.
The high-sensitivity ASIC of AKM compound Hall elements has enabled the high-speed response of 0.5μs.
CZ375 Series
Specifications
| Series | CZ375 Series | |
|---|---|---|
| Current sensor type | Coreless Current Sensor IC : Currentier |
|
| Package size | [mm] | 12.7 x 10.9 x 2.25 |
| Package Type (Mounting style) | (Small-sized) surface mount package (SMD) |
|
| Power Supply Voltage | [V] | 5.0 (4.5 to 5.5) |
| Operating Temperature | [℃] | -40 to 105 |
| Maximum Primary Current |
[Arms] | 100 |
| Working Voltage (pollution degree=2) |
[Vrms] | 558 (reinforced insulation) |
| Creepage / Clearance Distance (min.) |
[mm] | 8.0 |
| Primary conductor resistance (Typ.) |
[mΩ] | 0.27 |
| Isolation Voltage | [kVrms] | 4.2(AC50Hz, 60s) |
| VREF Pin | Existence | |
| Disturbance magnetic field fluctuation suppression function |
Existence | |
| Overcurrent detection function |
Non-existence | |
| Ratiometric / Non-Ratiometric |
Ratiometric | |
| Safety Standards | IEC/UL62368-1 certified UL1577 certified |
|
| Pb Free | Yes | |
| Halogen Free | Yes | |
| MSL | MSL2a | |
| JEDEC Standard Packaging | Compliant | |
| Packaging | TAPE | |
| Minimum Order Quantity | [pcs.] | 1000 |
| Part Status | MP |
CZ375 Series Block Diagram
Lineup
| Product Name |
Linear Sensing Range |
Sensitivity |
Temperature Drift of Sensitivity *1 |
Temperature Drift of Zero-Current Output *1 |
Total Accuracy *2 |
Response time |
Bipolar / Unipolar |
Datasheet Download (PDF) |
|---|---|---|---|---|---|---|---|---|
| [A] | [mV/A] | [%] | [mV] | [%F.S.] | [μs] | |||
| CZ375A | ±115 | 19.5 | ±0.9 | ±2.8 | 0.5 -0.9~-0.7 |
0.5 | Bipolar | CZ375A DS |
| CZ375B | ±150 | 15.0 | ±2.8 | CZ375B DS |
||||
| CZ375C | ±188 | 12.0 | ±2.7 | CZ375C DS |
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| CZ375D | ±225 | 10.0 | ±2.7 | CZ375D DS |
[Notes]
*1 It is defined as the "average value ± 3σ" of the actual measurement result (Ta = 0 to 90 °C) in a certain lot.
*2 The typical value is defined as the “average value ± 1σ” of the actual measurement result (Ta = 0 to 90 °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 = 0 to 90 °C) in a certain lot.
Design Support
Technical Resources
You can download documents and data necessary for design. Please make use of them when designing.
Certified with safety standards
CZ375 Series has acquired UL62368, IEC62368, and UL1577.
Applications
- EV quick charge station
- Packaged air conditioner
- General-purpose inverter
- Inverter
- UPS
It is suitable for the application which requires insulation and achieve small size with low heat generation.
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* Pollution Degree II with basic insulation
| Current Sensor Type |
Package | Supply Voltage |
Output Voltage |
Effective Current |
Measurement Range |
Bipolar / Unipolar |
Ratiometric/ Non-Ratiometric |
Creepage Clearance |
Working Voltage * |
Product Name |
Product Series |
Part Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (V) | (V) | (Arms) | (Apeak) | (mm) | (Vrms) | |||||||
| Coreless | SOP | 5.0 | 5.0 | 100 | ± 115 to ± 225 | Bipolar | Retiometric | ≧ 8.0 | 1118 | CZ375x | CZ375 Series | MP |
| 60 | ± 5.3 to ± 180 |
CZ370x | CZ370 Series CZ372 Series |
MP | ||||||||
| 0 to 345.2 | Unipolar | CZ372x | ||||||||||
| 3.0 | 50 | ± 11.6 to ± 166.6 | Bipolar | Non-Ratiometric | CZ3AGx | CZ3A Series | MP | |||||
| 3.3 | 3.3 | ± 12.9 to ± 129.1 | CZ3A0x |