The GXM Series is a LEM integrated current transducer designed for precise measurement of both AC and DC currents in industrial and automotive contexts. The sensor features effective rejection of external fields originating from noisy environments.
Advanced temperature and stress compensation algorithms ensure very high accuracy across a wide operating temperature range up to 150°C.
With an ultra-low primary conductor resistance of only 0.27 mΩ (typ.), the GXM Series achieves excellent thermal performance while minimizing power loss. The series includes variants optimized for different application requirements, from robust current sensing with high surge-current capability to wide-bandwidth (1 MHz), ultra-fast response performance suitable for high-efficiency power devices such as SiC and GaN.
The GXM Series supports current measurements from 50 to 200 A and includes internal and external overcurrent detection circuits, providing fast, reliable, and flexible protection solutions.
Furthermore, galvanic insulation between the primary and secondary sides eliminates the need for additional insulation, reducing both system footprint and overall cost.
GXM ANC
Key features
- Automotive qualified AECQ 100 Grade 0
- Open loop multi-range current sensor: 50~200A
- Low electrical resistance: 0.27 mΩ
- Dual supply voltage: 5V or 3.3 V
- Over current detection
- Fixed output with Verf
- High bandwidth: 320kHz
- 1.5us response time
- Galvanic separation between primary and secondary with 8.2mm of dCI and 8.2mm of dCp
- Insulated test voltage: 5000V RMS (UL62638)
- Working Voltage for Basic Isolation: 1618Vdc/1144 Vrms
- Maximum surge current (Isurge): 20KA
- Wide body SOIC 10L package
- Working Temperature: -40°C ~ 150°C
Applications
- Solar System
- Servo and Drive
- Automation
- HVAC
- Automotive On Board Charger
- DCDC
- Power distribution
- Solar Inverter
TECHNICAL DOCUMENTATION
GXM ANC AT A GLANCE
Product name | Nominal | Current | Nominal | Supply Voltage [Uc] | Ratiometric | Temp. range [°C] |
|---|---|---|---|---|---|---|
26.4 | 50 | 20 | 3.3V | No | -40 to 150°C | |
40 | 50 | 20 | 5V | No | -40 to 150°C | |
GXM ANC 75-30 50030A | 26.67 | 75 | 30 | 5V | No | -40 to 150°C |
17.6 | 75 | 30 | 3.3V | No | -40 to 150°C | |
25 | 80 | 32 | 5V | No | -40 to 150°C | |
16.5 | 80 | 32 | 3.3V | No | -40 to 150°C | |
GXM ANC 100-40 30010A | 13.2 | 100 | 40 | 3.3V | No | -40 to 150°C |
20 | 100 | 40 | 5V | No | -40 to 150°C | |
GXM ANC 100-40 50030A | 20 | 100 | 40 | 5V | No | -40 to 150°C |
GXM ANC 100-40 51030A | 41.2 | 100 | 40 | 5V | No | -40 to 150°C |
12 | 110 | 44 | 3.3V | No | -40 to 150°C | |
GXM ANC 150-60 50010A | 13.3 | 150 | 60 | 5V | No | -40 to 150°C |
GXM ANC 150-60 50030A | 13.3 | 150 | 60 | 5V | No | -40 to 150°C |
GXM ANC 150-60 51030A | 27.47 | 150 | 60 | 5V | No | -40 to 150°C |
GXM ANC 200-80 50010A | 10 | 200 | 80 | 5V | No | -40 to 150°C |
GXM ANC 200-80 50020A | 10 | 200 | 80 | 5V | No | -40 to 150°C |
GXM AFE
Key features
- 1 MHz bandwidth with 150 ns response time
- 50 to 200 A multi-range current measurement
- Ultra-low 0.27 mΩ primary resistance for minimal power loss
- Integrated overcurrent detection (internal and external OCD)
- Up to 20 kA surge current capability (IEC 61000-4-5)
- 5000 Vrms galvanic isolation with 8.2 mm clearance and creepage
- 3.3 V / 5 V dual supply operation
- -40°C to +150°C operating temperature
- Compact SOIC10L package, RoHS & REACH compliant
Applications
- OBC/DCDC/PTC Heater
- Photovoltaic System
- Drives and Motor Control
- Automation and Industrial Power Supply
- HVAC
- Charging Pile
Technical Documentation
GXM AFE 180-50010Q: high-speed automotive current sensing
The GXM AFE 180-50010Q combines a 180 A current measuring range, 1 MHz bandwidth, and 150 ns response time with AEC-Q100 Grade 1 qualification and operation up to 150°C. This combination makes it particularly well suited for next-generation automotive power electronics, where fast switching devices such as SiC and GaN require highly responsive and accurate current measurement under demanding operating conditions.
Designed to meet the challenges of modern vehicle electrification, the device delivers high-speed current sensing without compromising robustness or reliability. Its ability to combine high current measurement capability, wide bandwidth, automotive qualification, and high-temperature operation in a compact SOIC10L package provides designers with a powerful solution for applications such as onboard chargers, DC/DC converters, traction inverters, and other high-efficiency power conversion systems.
GXM AFE AT A GLANCE
Product name | Nominal | Current | Nominal | Supply | Ratiometric | Temp. | Grade |
|---|---|---|---|---|---|---|---|
| GXM AFE 50-50010A | 40 | 50 | 20 | 5V | No | -40 to 150°C | Industry |
| GXM AFE 50-51010A | 80 | 50 | 20 | 5V | No | -40 to 150°C | Industry |
| GXM AFE 65-50010A | 30.77 | 65 | 26 | 5V | No | -40 to 150°C | Industry |
| GXM AFE 100-30010A | 13.2 | 100 | 40 | 3,3V | No | -40 to 150°C | Industry |
| GXM AFE 100-51010A | 40.2 | 100 | 40 | 5V | No | -40 to 150°C | Industry |
| GXM AFE 150-50010A | 13.33 | 150 | 60 | 5V | No | -40 to 150°C | Industry |
| GXM AFE 66-30010Q | 20 | 66 | 26 | 3,3V | No | -40 to 150°C | Automotive |
| GXM AFE 100-30010Q | 13.2 | 100 | 40 | 3,3V | No | -40 to 150°C | Automotive |
| GXM AFE 100-50010Q | 20 | 100 | 40 | 5V | No | -40 to 150°C | Automotive |
| GXM AFE 180-50010Q | 11.1 | 180 | 72 | 5V | No | -40 to 150°C | Automotive |
GXM Series
STANDARDS & CERTIFICATES
| GXM Series |
|---|
| UL62638-1 |
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