14 new IPDs offer enhanced protection functions for automotive body applications

April 06, 2012 // By Paul Buckley
Renesas Electronics is introducing 14 new intelligent power devices (IPDs), including the μ PD166023, designed for automotive applications driving exterior lamps such as headlamps and fog lamps as well as seat heaters and motors.

An IPD is a power IC device that incorporates in a single package, or on a single chip, a power semiconductor switch (power MOSFETs) and its control circuit featuring interface to microcontroller (MCU) as well as protection functions and self-diagnostic. Renesas has been mass producing IPDs for automotive body applications for many years. The new IPD products expand this existing lineup and increase performance level to address strong market demand.

Nowadays the use of semiconductor switches is more widespread than ever, and the load requirements and applications for them have grown to include a large number of automotive drive applications, including external lamps such as headlamps, fog lamps, flashers (turn signals), and brake lights, as well as heaters and motors of various types. In response, Renesas is releasing an extensive lineup of 14 new IPD products with pin compatibility among products using the same package configuration.

The new products are designed to detect and deal with error states instantly in order to provide a high level of durability. For example, exterior vehicle lamp applications require longer wire harnesses to connect the control unit to the lamps leading to a high possibility of undesirable events, such as shorted loads. These undesirable events may not be noticed by car drivers and result in severe stress conditions for the switch, the enhanced protection features expand device durability. The new products are also designed with self diagnostic features to detect and deal with error states instantly in order to provide a high level of durability and ensure functional safety at system level.

The new IPDs product lineup includes versions with on-resistance specification of 6 m Ω , 8 m Ω , 10 m Ω , 12 m Ω , 16 m Ω , 25 m Ω , 30 m Ω , 50 m Ω , and 90 m Ω . The wide range of on-resistance enables customers to select the product that best matches