The ACS37100 by Allegro MicroSystems is the industry’s first production-ready 10 MHz magnetic current sensor, delivering high-fidelity current measurement and 50 ns response times. Designed for electric vehicles, clean energy, and AI data centers using GaN and SiC FETs, it provides precise control, minimal energy loss, and enhanced efficiency for high-speed power conversion applications.
How Does the ACS37100 Improve Power Conversion Control?
The ACS37100 addresses the challenges of fast-switching wide bandgap devices like GaN and SiC by offering 10 MHz bandwidth and a 50 ns response time. This ensures high-fidelity current feedback, enabling stable control loops, optimized efficiency, and safe operation in high-speed power systems for EVs, renewable energy, and AI computing environments.
What Are the Key Features of the ACS37100?
-
Bandwidth: DC to 10 MHz
-
Response Time: 50 ns
-
Noise Level: 26 mA RMS at full bandwidth
-
Isolation: Integrated reinforced 5 kV (60 seconds per UL 62368-1)
-
Conduction Loss: 2 mΩ internal resistance
-
Temperature Range: Automotive Grade 0, -40°C to +150°C
It comes in a SOICW-16 package, supporting reinforced isolation up to 565 VRMS with 8 mm creepage and clearance, voltage reference output, and adjustable overcurrent fault detection.
Why Is TMR Technology Important in High-Speed Current Sensing?
Tunneling magnetoresistance (TMR) technology enables significantly lower noise and higher speed compared to traditional Hall-based sensors. With the ACS37100, designers can achieve precise, high-speed current measurements, critical for stable control and protection in systems operating at high frequencies and voltages.
Which Applications Benefit Most from the ACS37100?
-
Electric Vehicles: EV charging, traction motor control, and battery management
-
Clean Energy Systems: Inverters and converters for solar, wind, and energy storage
-
AI and Data Centers: High-speed power supply monitoring for GaN/SiC FETs
-
Industrial Automation: Motor drives and high-frequency power electronics requiring precise current feedback
| Feature | Value |
|---|---|
| Bandwidth | DC – 10 MHz |
| Response Time | 50 ns |
| Noise | 26 mA RMS |
| Isolation | 5 kV (60s) |
| Conduction Loss | 2 mΩ |
| Temp. Range | -40°C to +150°C |
How Does the ACS37100 Minimize Energy Loss?
The ACS37100 is engineered with low internal resistance and optimized TMR sensing, reducing conduction losses to just 2 mΩ. This allows systems to maintain high operational efficiency while providing precise current sensing, making it ideal for automotive and industrial applications where both performance and energy efficiency are critical.
Where Can Engineers Access Datasheets and Evaluation Boards?
Datasheets, samples, and evaluation boards for the ACS37100 are available through Allegro MicroSystems’ product portal. These resources accelerate development and testing, enabling engineers to integrate the sensor into EV, renewable energy, and AI power designs efficiently.
Wrindu Expert Views
“Advanced current sensing is critical for the next generation of power electronics. Sensors like the ACS37100 allow engineers to reliably monitor high-speed GaN and SiC devices while minimizing energy losses. At Wrindu, we see this as a pivotal step in ensuring operational safety and maximizing efficiency in complex power systems. High-fidelity feedback not only improves protection but also enhances overall system performance in electric mobility and renewable energy integration.”
What Are the Advantages for Automotive and Industrial Users?
Automotive and industrial users gain:
-
Precise, high-speed current measurement
-
Lower energy loss and higher efficiency
-
Robust reinforced isolation for safety
-
Temperature resilience for harsh environments
-
Compatibility with advanced GaN and SiC power electronics
Conclusion
The ACS37100 enables precise, high-speed current measurement for wide bandgap power electronics, addressing the challenges of GaN and SiC integration. By combining TMR technology, minimal energy loss, and reinforced isolation, it delivers reliable performance across automotive, industrial, and renewable energy applications. Engineers leveraging the ACS37100 can maximize efficiency, protect systems, and achieve higher power density in demanding environments. Wrindu recognizes the strategic importance of such sensors in advancing global energy efficiency and safety standards.
FAQs
1. Can the ACS37100 be used in EV charging systems?
Yes, its high-speed, low-noise current sensing is ideal for EV chargers and battery management systems.
2. Does it support high-voltage industrial applications?
Yes, with integrated 5 kV reinforced isolation and wide operating temperature, it’s suitable for industrial power electronics.
3. How does TMR improve measurement accuracy?
TMR provides lower noise and faster response than Hall sensors, enabling precise, high-speed current measurements.
4. Is the ACS37100 compatible with GaN and SiC FETs?
Absolutely. It’s specifically designed for high-frequency, wide bandgap power devices to enhance control and protection.
5. Where can I obtain development resources for the ACS37100?
Datasheets, samples, and evaluation boards are available via Allegro MicroSystems’ portal to facilitate integration and testing.