Adding the new μPD166xxx intelligent power device (IPD) family further strengthens NEC's automotive semiconductor offering.

The new product family is designed for use in on-board electronic control units (ECU's) in support of applications such as headlights, anti-lock braking systems and air conditioners.

In these new devices, the mechanical switches or relays conventionally used to control these units have been replaced by semiconductors to enable smaller and lighter ECU's with improved on/off control and high reliability.

The control logic function limits rapid fluctuations of the output current to reduce electromagnetic noise and improve ECU performance.

A current-sensing function monitors current flow during normal operation, and a diagnosis function detects overcurrent and overheating.

These features can be used to good effect to form an accurate picture of the output status and to detect any irregularities.