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About AKM
CQ2 Series
Low heat generation
Creepage / Clearance distance ≧ 13.3mm
High resolution
Cored current sensor
NRND
Current Sensors
・The CQ22xx series is not recommended for new design(NRND). We recommend CZ3A0x series for new adoption.
・The CQ23xx series is not recommended for new design(NRND). We recommend CZ37xx/CZ3AGx series for new adoption.
Overview
The CQ2 series is a series of cored current sensors. It features a simple structure (AI-Shell®) that combines a highly sensitive compound Hall element, a magnetic core, and primary conductor.
It has an extremely low primary conductor resistance (100μΩ), making it suitable for products in which heat must be minimized.
In addition, the CQ2 series has a wide creepage and clearance distance of 13.3 mm, allowing it to be used at high operating voltages.
This page contains information about the features of the CQ2 series, product details, datasheets, and product lineup information. It also provides technical information such as safety standard information and gerber data of evaluation board, etc.
Features
1. Low heat generation
The CQ2 series has a primary conductor resistance of 100μΩ (25°C) due to its unique AI-Shell package structure. Since the amount of heat generation is proportional to the resistance value, this enables it to minimize increases in temperature even when a large current is passed through it.
2. Clearance, Creepage distance
The CQ2 series has a unique package structure called AI-Shell, with creepage and spatial distances of 13.3 mm or more. It is made with Gr=3 material, so the operating voltage is as follows in pollution degree 2 environments.
Basic insulation=1330Vrms Reinforced insulation=650Vrms
3. Ultra-high accuracy
In package structures, there is usually a tradeoff between low primary conductor resistance/large creepage and spatial distances and resolution.This is because the magnetic fields that collect in the Hall element tend to be small.However, the CQ2 series uses InAs Hall elements with highly sensitive quantum well structures. This enables them to have low heat generation and a creepage/clearance distance of 13.3mm while also offering high resolution.
CQ2 Series
Applications
- Air conditioner, etc.
Specifications
| Series |
CQ2 Series | |
|---|---|---|
| Current sensor type | Cored Current Sensor : AI-Shell |
|
| Package size | [mm] | 22.8 x 14.4 x 9.2 |
| Package Type (Mounting style) | Through hole type | |
| Power Supply Voltage | [V] | CQ223x : 3.3 (2.7 to 3.63) CQ233x : 5.0 (4.5 to 5.5) |
| Operating Temperature | [℃] | -40 to 110 |
| Maximum Primary Current |
[Arms] | 50 |
| Working Voltage (pollution degree=2) |
[Vrms] | 1330 (basic insulation) |
| Creepage / Clearance Distance (min.) |
[mm] | 13.3 |
| Primary conductor resistance (Typ.) |
[μΩ] | 100 |
| Isolation Voltage | [kVrms] | 3 (AC50/60Hz, 60s) |
| VREF Pin | Non-existence | |
| Disturbance magnetic field fluctuation suppression function |
Existence (Suppression function by magnetic core) |
|
| Overcurrent detection function |
Non-existence | |
| Ratiometric / Non-Ratiometric |
Ratiometric | |
| Safety Standards | IEC/UL62368-1 certified UL508 certified |
|
| Pb Free | Yes | |
| Halogen Free | Yes | |
| MSL | MSL1 | |
| JEDEC Standard Packaging | Compliant | |
| Packaging | ||
| Minimum Order Quantity | [pcs.] | 1000 |
| Part Status |
NRND |
CQ2 Series Block Diagram
CQ2366
Lineup
CQ2 Series You can download a datasheet (PDF file) below.
| Product Name |
Power Supply Voltage |
Linear Sensing Range |
Sensitivity |
Temperature Drift of Sensitivity *1 |
Temperature Drift of Offset Voltage *2 |
Output Noise *3 |
Bandwidth | Response Time |
Datasheet Download (PDF) |
|---|---|---|---|---|---|---|---|---|---|
| [V] | [A] | [mV/A] | [%] | [mV] | [mVrms] | [kHz] | [μs] | ||
| CQ2232 | 3.3 | ±21 | 62.5 | ±0.4 | ±9.0 | 1.2 | 300 | 1 | CQ2232 DS |
| CQ2233 | ±35 | 37.5 | ±5.5 | CQ2233 DS | |||||
| CQ2234 | ±54 | 24.5 | ±3.5 | CQ2234 DS | |||||
| CQ2235 | ±85 | 15.5 | ±2.5 | CQ2235 DS | |||||
| CQ2332 | 5.0 | ±21 | 100 | ±0.5 | ±23 | CQ2332 DS | |||
| CQ2333 | ±35 | 60.0 | ±12 | CQ2333 DS | |||||
| CQ2334 | ±54 | 40.0 | ±8 | CQ2334 DS | |||||
| CQ2335 | ±85 | 25.0 | ±6 | CQ2335 DS | |||||
| CQ2366 | 5.0 | ±170 | 12.0 | ±4 | 0.5 | 180 | 1.5 | CQ2366 DS |
[Notes]
*1 Change ratio of Sensitivity (Ta=35°C) . Temperature range -40 ~ 110°C
*2 Change ratio of Zero-Current Output Voltage(Ta=35°C) . Temperature range -40 ~ 110°C
*3 Output noise voltage 100Hz to 4MHz integrated
The CQ2366 has very different features among the CQ2 series, please see this link.
Design Support
Technical Resources
You can download documents and data necessary for design. Please make use of them when designing.
Certified with safety standards
The CQ2 series has UL-62368, IEC62368, and UL-508 certifications. You can download a detailed PDF file below.
Find other products
Search by Selection Table
You can select a product from the product specifications.
Click on the product series name to see the details.
| 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 | 60 | ± 5.3 to ± 180 |
Bipolar | Retiometric | ≧ 8.0 | 1118 | CZ370x | CZ37 Series | Preview |
| 0 to 345.2 | Unipolar | CZ372x | ||||||||||
| 3.0 | 50 | ± 11.6 to ± 166.6 | Bipolar | Non-Ratiometric | CZ3AGx | CZ3A Series | Preview | |||||
| 3.3 | 3.3 | ± 12.9 to ± 129.1 | CZ3A0x | |||||||||
| 5.0 | 5.0 | 20 | ± 4.5 to ± 42 | Bipolar |
Retiometric | ≧ 5.0 | 1000 | CQ330x | CQ3 Series | NRND | ||
| ± 20.5 to 42 | Unipolar | |||||||||||
| 3.3 | 3.3 | ± 8.5 to ± 44 | Bipolar | CQ320x | ||||||||
| 20.9 | Unipolar | |||||||||||
| Through Hole |
DIP | 5.0 | 5.0 | 50 | ± 21 to ± 170 | Bipolar | ≧ 13.3 | 1330 | CQ233x | CQ2 Series | NRND | |
| 3.3 | 3.3 | ± 21 to ± 85 | CQ223x | |||||||||
| 5.0 | 5.0 | ± 170 | ≧ 2.7 | 270 | CQ2366 | NRND |
* Pollution Degree II with reinforced insulation