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About AKM
CZ39 Series
Automotive current sensor with strong affinity for SiC/GaN power devices.
100ns ultra-fast response enables advanced high-frequency control and
comprehensice overcurrent protection.
CZ39 Series
Overview
- Fast response time : 100ns
- Low primary conductor resistance : 0.3mΩ
- AEC-Q100
What can be done with CZ39 series?
- High-speed response
- Low heat generation
- Noiseproof propertties
- System downsizing
CZ39 series is highly compatible with SiC/GaN power devices and contribute to the miniaturization of On Board Chargers (OBC) and DC/DC converters that are installed in automobiles. Its high-speed response also makes this product suitable for the use as electronic fuses (eFuse).
Features
1. Detects current with a fast response time of 100ns
The high sensitivity characteristics of the compound Hall element deliver a fast response time.
Using this product in chargers and DC/DC converters that use next-generation power devices such as SiC and GaN enables a higher switching frequency, resulting in circuits with smaller board sizes.
It also has a fast response time that can provide all kinds of overcurrent protection, making it possible to introduce safe electronic fuse circuits into automotive power conversion systems.
2. 0.3mΩ primary conductor resistance for reduced heat generation and easier thermal design
We have developed a unique package to achieve a low primary conductor resistance of 0.3mΩ. The heat generation is suppressed even under the continuous energization of 40Arms at an ambient temperature of 125ºC, thereby facilitating thermal design.
In addition, the voltage-resistant structure that ensures sufficient creepage and space distances enables the use in high-voltage applications with voltages in excess of 650V.
3. Current detection is possible without influence of noise even during high-speed switching operation
The use of SiC and GaN power devices significantly impacts the noise environment due to their high voltage and high speed switching.
This product is less likely to affect sensor characteristics even in the environments mentioned above, and can detect current without the influence of noise.
Applications
- On Board Charger (OBC) for EV
- DC/DC Converter for EV
- Electronic Fuse (E-Fuse) for EV
Find other products
CZ39 Series Block Diagram
| Series | CZ39 Series |
|---|---|
| Current Sensor Type | Coreless Current Sensor IC Currentier |
| Package Size [mm] | 11.5 x 8.3 x 2.0 |
| Package Type | Small-Sized Surface Mount Package (SMD) |
| Power Supply Voltage [V] | 5.0 (4.5 to 5.5) |
| Operating Temperature [℃] | -40 to 125 |
| Maximum Primary Current [Arms] | 40 |
| Working Voltage [Vrms] (Pollution Degree=1) |
1100 (Reinforced Insulation) |
| Creepage / Clearance Distance (Min.) [mm] | 7.2 |
| Primary Conductor Resistance (Typ.) [mΩ] | 0.3 |
| Isolation Voltage [kVrms] | 3.0 (AC50Hz, 60s) |
| VREF Pin | Yes |
| Stray Magnetic Field Reduction | Yes |
| Ratiometric / Non-Ratiometric | Ratiometric |
| Safety Standards | IEC/UL62368-1 Certified UL1577 Certified |
| Pb Free | Yes |
| Halogen Free | Yes |
| MSL | MSL2a |
| Packing | Tape |
| Minimum Order Quantity [pcs.] | 1000 |
| Part Status | MP |
Lineup / Datasheet
| 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.] | [ns] | |||
| CZ3902 | ±20.9 | 100.0 | ±0.7 | ±3.0 | 0.5 | 100 | Bipolar | CZ3902 DS |
| CZ3903 | ±34.9 | 60.0 | CZ3903 DS |
|||||
| CZ3904 | ±52.4 | 40.0 | CZ3904 DS |
|||||
| CZ3905 | ±83.9 | 25.0 | CZ3905 DS |
|||||
| CZ3906 | ±125.6 | 16.7 | CZ3906 DS |
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| CZ3907 | ±154.0 | 13.6 | CZ3907 DS |
[Notes]
*1 It is defined as the "average value ± 1σ" of the actual measurement result in a certain lot.
*2 The typical value is defined as the “average value ± 1σ” of the actual measurement result in a certain lot.
Technical information
You can use useful simulation or calculation tools for your design.Please note that you are required to register your information when using some of those tools.
Application Note
Download our guide to the CZ39 series for key insights and design tips.
PDF
A High Voltage eFuse for automotive Applications
This article introduces the proof of concept for a new eFuse system, which achieves a short-circuit detection response time of below 160ns under the test conditions at 650A of short-circuit current in an 800V system.
PCB Design Kit
We provide evaluation board Gerber data, PCB symbol, footprint, and 3D model.
ZIP (1.43MB)
MATLAB Simulation Model
We provide MATLAB/Simulink simulation models
FAQ
Comming soon
Quality Data
The AKM Group prepares quality data.
Certified with safety standards
The CZ39 series has UL62368 and UL1577 certifications. You can download a detailed PDF file below.
Design Support
You can use useful simulation or calculation tools for your design.Please note that you are required to register your information when using some of those tools.
Series lineup
| Application | Supply Voltage |
Output Voltage |
Effective Current |
Measurement Range |
Ratiometric/ Non-Ratiometric |
Creepage Clearance |
Working Voltage * |
Product Series |
Part Status |
|---|---|---|---|---|---|---|---|---|---|
| (V) | (V) | (Arms) | (Apeak) | (mm) | (Vrms) | ||||
| Industrial | 5.0 | 5.0 | 100 | ± 115 to ± 225 | Retiometric | ≧ 8.0 | 1118 | CZ375 Series | MP |
| 60 | ± 5.3 to ± 180 |
CZ370 Series |
MP | ||||||
| 0 to 345.2 | CZ372 Series | MP | |||||||
| 3.0 | 50 | ± 11.6 to ± 166.6 | Non-Ratiometric | CZ3A Series | MP | ||||
| 3.3 | 3.3 | ± 12.9 to ± 129.1 | |||||||
| Automotive / Industrial | 5.0 | 5.0 | 40 | ± 20.9 to ± 154.0 | Retiometric | ≧ 7.2 | 1013 | CZ39 Series | MP |
* Pollution Degree II with basic insulation
Inquiries about Current Sensors
For any inquiries regarding products, samples, technology, consultations, estimates, or purchases, please feel free to contact us.