CT431-HSWF65MR

Current Sensors Overview

The CT431-HSWF65MR is a high-bandwidth, ultra-low noise integrated contact current sensor utilizing XtremeSense TMR technology. It features a wide frequency range and accurate current measurement with less than 1% total error. The device supports bidirectional sensing up to 65A peak current at VDD=3.3V. It offers a 1MHz bandwidth and approximately 300ns response time, providing 5kV isolation capability. Packaged in a 16-lead SOIC (7.50mm width), it is designed for high-power applications requiring fast, low-loss isolated sampling.

Current Sensors Feature Summary

• Utilizes patented XtremeSense TMR technology for high bandwidth and ultra-low noise performance.
• Provides accurate current measurement with less than 1% total error across a wide frequency range.
• Features internal synchronous rectification control circuitry to improve power dissipation efficiency.

Current Sensors Applications

• High-power PFC stages in kilowatt-class power supplies
• Isolated current sampling in high-speed power conversion systems
• Microstepping motor driver evaluation and control

Current Sensors Procurement Notes

Verify component authenticity through authorized Allegro MicroSystems distributors or official channels. Confirm the specific suffix HSWF65MR matches design requirements for 65A peak current and 16-SOIC packaging. Check datasheet revisions for any updates regarding operating conditions or electrical characteristics before finalizing procurement orders.

Current Sensors Selection Notes

Select this sensor for applications demanding high-speed response and low noise in isolated current sensing. Ensure the system voltage aligns with the 3.3V VDD requirement. Consider the 16-SOIC package dimensions for PCB layout constraints. Validate that the 65A peak current rating meets the maximum load expectations of the target application without saturation.

Current Sensors Part Context

The CT431 series represents Allegro's XtremeSense TMR sensor line, designed for high-performance current monitoring. This specific model integrates magnetoresistive sensing elements with signal conditioning. It addresses the need for precise, fast-response current detection in modern power electronics and motor control systems where traditional Hall-effect sensors may lack sufficient bandwidth or accuracy.

Current Sensors Replacement Considerations

Not recommended for new designs. Consult Allegro MicroSystems for updated alternatives if redesigning existing products using this component.

Current Sensors FAQ

What is the isolation capability of the CT431-HSWF65MR?

The device provides 5kV level isolation capability, suitable for high-voltage isolated sampling applications.

Does the CT431 include internal rectification control?

Yes, the CT431 includes internal synchronous rectification control circuitry to improve power dissipation.