November 12, 2026 / SemiMedia / — Diodes Incorporated has introduced the AHC1724Q and AHC1725Q automotive Hall effect current sensors for onboard chargers and EV charging stations. The devices measure AC and DC current with galvanic isolation, combining a copper current path and linear Hall sensing circuit in a compact SO-8 package.

The primary conductor has a typical resistance of 1.2 mΩ, limiting conduction loss in the measurement path. Current flowing through the conductor generates a magnetic field that the integrated Hall circuit converts into a proportional analog voltage. Differential Hall sensing rejects common-mode magnetic fields, helping maintain measurement accuracy in magnetically noisy environments.

The primary current path is electrically isolated from the sensing circuitry, allowing high-side current measurement without a high-side differential amplifier. Both devices support a maximum working voltage of 420 VDC for basic isolation under UL 62368-1.

The two families serve different supply rails and measurement ranges. The AHC1724Q operates from 4.5 V to 5.5 V, with range options from ±2.5 A to ±50 A. The AHC1725Q uses a 3.0 V to 3.6 V supply and offers ranges from ±5 A to ±50 A. Unidirectional and bidirectional versions are available, allowing designers to select a variant for the required current direction and full-scale range.

A chopper-stabilized architecture and post-packaging trimming reduce offset. Both devices provide 120 kHz analog bandwidth, a typical response time of 4.0 µs and typical propagation delay of 2.0 µs for tracking changing current conditions. Their analog outputs are ratiometric to the supply voltage.

Both sensors operate from −40°C to +150°C in low-profile SO-8 Type CJ2 surface-mount packages. They are AEC-Q100 qualified, support PPAP documentation and are manufactured in IATF 16949-certified facilities. Non-automotive AHC1724 and AHC1725 versions are also available for applications including switched-mode power supplies, load management, HVAC and overcurrent protection.

Diodes is showing the automotive devices at electronica 2026. In quantities of 4,000 units, the AHC1724Q is priced at $1.30 each and the AHC1725Q at $2.20 each.