PM2165.040NL

Current Sense Transformers Overview

The PM2165.040NL is a surface-mount current sense transformer manufactured by Pulse Electronics, designed for board-level integration in power management applications. It features a 1:40 current ratio and operates within a frequency range of 20kHz to 1MHz. The component has an inductance of 320 µH and supports a maximum current rating of 20A. Electrical characteristics include a primary DC resistance (DCR) of 0.75mΩ and a secondary DCR of 5.5Ω. It is rated for 1000Vrms isolation and complies with AEC-Q200 automotive standards. The package dimensions indicate a maximum height of 5.50mm.

Current Sense Transformers Feature Summary

• Provides galvanic isolation with a 1:40 current transformation ratio for accurate sensing.
• Complies with AEC-Q200 qualification standards for automotive reliability.
• Supports high-frequency operation between 20kHz and 1MHz.
• Utilizes a compact surface-mount package for automated assembly.

Current Sense Transformers Applications

• Automotive power supply current monitoring
• Battery management system (BMS) input/output sensing
• DC-DC converter output current regulation
• On-board charger (OBC) circuit protection

Current Sense Transformers Procurement Notes

Verify the specific suffix 'NL' against the manufacturer's latest datasheet to confirm lead-free compliance and tape-and-reel availability. Ensure the selected variant matches the required inductance tolerance and secondary DC resistance limits for your specific circuit design. Cross-reference the AEC-Q200 certification status if automotive qualification is mandatory for your application.

Current Sense Transformers Selection Notes

Select this component when a 1:40 ratio is required for current sensing in automotive-grade environments. Consider the 320 µH inductance value for compatibility with your switching frequency and burden resistor calculations. Verify that the 20A current rating exceeds your peak operational currents. Compare secondary DCR values against other variants in the series to minimize insertion loss in the sensing path.

Current Sense Transformers Part Context

This part belongs to the PM2165 series of current sense transformers from Pulse Electronics. The series offers various turn ratios and inductance values to suit different power levels. These components are engineered for high-volume manufacturing and provide reliable performance in harsh automotive environments. The PM2165.040NL specifically addresses applications requiring moderate current scaling with strict automotive quality requirements.

Current Sense Transformers Replacement Considerations

Direct substitutes include PM2165.050NL (1:50 ratio), PM2165.100NL (1:100 ratio), and PM2165.125NLT (1:125 ratio). Verify that the alternative ratio aligns with your signal conditioning circuitry. Check that the inductance and DCR specifications of the replacement part do not degrade your measurement accuracy or thermal performance.