Diodes Adds Hall Sensors and IntelliFET Switches for Automotive

Diodes Incorporated has introduced new current-sensing and power-switching devices for automotive applications, addressing requirements for efficient EV charging, reliable 12 V load control, and integrated circuit protection. The additions include the AHC1724Q and AHC1725Q Hall effect current sensors, alongside three second-generation IntelliFET® high-side switches: the ZXMS81030SPQ, ZXMS82030S14PQ and ZXMS82045S14PQ.

The AHC1724Q and AHC1725Q provide galvanically isolated AC and DC current measurement for electric vehicle onboard chargers (OBCs), charging stations and other power systems. Their integrated copper conduction path and linear Hall sensor circuit have a typical primary conductor resistance of just 1.2 mΩ, reducing power dissipation while supporting high inrush currents. Measurement ranges extend to ±50 A, with unidirectional and bidirectional options.

The sensors enable high-side current measurement without external differential amplifiers or other costly isolation techniques. They support a maximum working voltage of 420 VDC for basic isolation according to UL 62368-1. A chopper-stabilized, low-offset architecture with post-packaging trimming provides a precise analog output proportional to current. Performance includes 120 kHz bandwidth, a typical response time of 4.0 µs, and a typical propagation delay of 2.0 µs. The output is also ratiometric to the supply voltage.

The AHC1724Q operates from 4.5 V to 5.5 V and supports ranges from ±2.5 A to ±50 A, while the AHC1725Q uses a 3.0 V to 3.6 V supply and covers ±5 A to ±50 A. Both are housed in a low-profile SO-8 (Type CJ2) package and operate from -40°C to +150°C. Standard-compliant AHC1724 and AHC1725 versions are also available for industrial and commercial applications.

For 12 V automotive loads, the three IntelliFET devices combine a vertical DMOS N-channel MOSFET with an integrated controller. They manage inrush current and protect against short circuits, overvoltage, and load-dump conditions, and provide overtemperature protection with automatic restart and electrostatic discharge (ESD) protection. Loss-of-ground and reverse-polarity protection can be implemented with minimal external components. Onboard diagnostics identify open-load, overload, and overtemperature shutdown conditions.

The single-channel ZXMS81030SPQ comes in an SO-8EP package, while the dual-channel ZXMS82030S14PQ and ZXMS82045S14PQ use SO-14EP packages. Both package types feature exposed underside heatsinks.

Diodes is showcasing the current sensors and high-side switches at electronica 2026. The IntelliFET devices are part of a 48 V power-tree demonstration at Booth 211 in Hall C6, where they provide a protected, switched 12 V output.

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