Diodes Incorporated has introduced the AHC1724Q and AHC1725Q automotive-compliant Hall effect current sensors for electric vehicle (EV) charging applications. The devices provide galvanically isolated ac and dc current measurement for onboard chargers and charging stations, with low conductor resistance to reduce power losses.
Both sensors integrate a low-resistance copper conduction path with a linear Hall sensor circuit. Their typical primary conductor resistance of 1.2 mΩ helps minimize power dissipation while accommodating high inrush currents.
Measurement ranges extend to ±50 A, with unidirectional and bidirectional configurations available.
The electrically isolated conduction path enables high-side current sensing without requiring additional differential amplifiers or external isolation circuitry. Both devices have a maximum working voltage of 420 Vdc for basic isolation under UL 62368-1.
A chopper-stabilized architecture with post-packaging trimming provides an analog output proportional to the measured current. The sensors offer 120-kHz bandwidth, a typical response time of 4 µs and a propagation delay of 2 µs for monitoring changes in current.
The AHC1724Q operates from a 4.5 to 5.5-V supply and measures currents from ±2.5 A to ±50 A. The AHC1725Q operates from 3.0 to 3.6 V, with measurement ranges from ±5 A to ±50 A.
Both devices are available in a low-profile SO-8 surface-mount package and operate across a temperature range of −40° to +150° C. Industrial versions, designated AHC1724 and AHC1725, are also available.
Diodes is demonstrating the new sensors at electronica 2026, November 10–13 in Munich, Germany (Hall C6, Booth 211).
Filed Under: Power Electronics, Sensors, Technology News