Tokyo: Toshiba Electronic Devices and Storage Corporation (Toshiba) has introduced the 'TCKE1401NM', an 80-volt-rated electronic fuse (eFuse IC), to its range of eFuse ICs equipped with multiple built-in power line protection functions.

According to BERNAMA News Agency, the new product features the VQFN24D package, which is a leading small package for 80V-rated eFuse ICs. This addition enhances safety in power line protection circuits and contributes to a reduction in printed circuit board (PCB) size for industrial equipment. The shift towards 48V power systems in servers, network equipment, factory automation equipment, and robots drives the need for power line protection circuits with high voltage tolerances and multiple protection functions.

An eFuse IC is a semiconductor fuse designed to safeguard downstream circuits from abnormal current, voltage, and other fault conditions. Toshiba's statement highlights that the TCKE1401NM, with its 80V rating, supports a wide operating voltage range from 4.7V to 75V. Its robust voltage tolerance makes it suitable for power line protection in 24V, 48V, and 54V systems.

The eFuse IC offers key protection functions, including current limiting to control output current during overcurrent incidents and output shutdown to disable output during overvoltage situations. These operating thresholds are adjustable via external resistors. The IC also provides true reverse current blocking and reverse-connection protection, utilizing external MOSFETs to shield the IC and downstream circuits.

Toshiba further elaborated that the eFuse IC includes a FLAG function to alert external circuits of abnormal conditions, a power-good function to indicate output voltage status, and an output current monitor function. Additionally, it features a thermal shutdown function to immediately deactivate the eFuse IC during unexpected short circuits or abnormal heat generation.