Current sensors enhance GaN, SiC power efficiency

Both current sensors are designed to improve efficiency in GaN and SiC power systems, such as those found in electric vehicles (EV) and hybrid electric vehicles (HEV).

The ACS37030 and ACS37032 are galvanically isolated and fully integrated high-accuracy current sensor ICs in the LZ fused-lead SOIC-6 packages.

These sensors incorporate high operating bandwidth (DC to 5MHz) for fast control loops or for monitoring high-speed switching currents with a typical 40ns response time.

The sensors employ two signal paths that are summed, enabling the sensing of a wide frequency band with a single device.

One path involves a Hall-effect element to capture DC and low-frequency current information, while the other uses an inductive coil path to capture high-frequency current information.

The internal construction achieves high isolation by magnetically coupling the field generated by current flow in the conductor to the fully monolithic Hall and coil IC.

Both current sensor ICs offer 3500V_RMS isolation voltage between primary and secondary signal leads, with no physical connection to the integrated current conductor. 

These devices are available in both zero current reference (ACS37030) and overcurrent fault with internal pull-up (ACS37032) options.

Typical applications include EV onboard chargers, EV DC-DC, solar DC-DC, server power supplies, and data centre power supplies.