New Industry Products

Renesas Introduces Three New Intelligent Power Devices for Automotive Lighting Application

May 11, 2011 by Jeff Shepard

Renesas Electronics America Inc. announced three new intelligent power devices (IPDs), the µPD166011, µPD166013 and µPD166014, for use in automotive lighting systems for turn signals and brake light applications. The new IPDs integrate into a single package, power metal-oxide-semiconductor field-effect transistors (Power MOSFETs) as switching elements and control circuits for protection and self-diagnostic functions.

The new IPDs include the µPD166011 with a 12-pin power HSSOP package and two output channels with an on-state resistance of 25mΩ; the µPD166013 with the 12-pin power HSSOP package and two output channels with an on-state resistance of 60mΩ and the µPD166014 with a 24-pin power HSSOP package and four output channels with an on-state resistance of 60mΩ.

Providing either two or four output channels in a single package, the new IPDs are offered in three different product versions, with different packages, on-state resistance, and output channel-count characteristics to meet a variety of customer requirements.

The IPDs can be used in combination with Renesas Electronics’ existing µPD166009 or µPD166010 devices to drive exterior automotive lamps with varying characteristics, including turn signals, brake lights, headlights, cornering lamps and fog lamps.

The new IPD products are fabricated with a new process that provides tolerance for high voltages and large currents and enables a single-chip configuration. Compared to existing Renesas Electronics products with a single output channel and a TO-252 package, the new µPD166011 and µPD166013 devices implement two output channels in a 12-pin power HSSOP package of about the same size. This means that a lamp-drive circuit block can be built using only half as many of the new IPD products, contributing to a smaller mounting area and a more compact control unit overall.

Two product versions use the new 12-pin power HSSOP package and provide two output channels with an on-resistance of 25 or 60mΩ. If, for example, the lamp drive load conditions change while the control unit is in the development phase, it is possible to switch to an IPD product with a lower on-state resistance while maintaining the same package and pin compatibility. The change can be made without the need to modify the design of the printed wiring board.

In addition, one of the product versions with an on-resistance of 60mΩ (needed to drive 10W and 21W lamps) provides four output channels for an even greater reduction in the mounting area. These two-channel and four-channel high-side IPDs provide a flexible range of options for driving different numbers and types of lamps.

In external automobile lamp applications, the wire harnesses connecting the control units and lamps are long and susceptible to short circuits. High power is applied to IPDs in short circuit situations; therefore, these devices must be highly robust and capable of withstanding this state continuously and over a long period of time.

The control circuit block of the new IPDs determines when an abnormal condition has occurred due to a short circuit. As a result, they have been certified Grade A, the highest grade under the AEC-Q100 short circuit reliability testing guidelines (AEC-Q100-012).

The new IPDs contribute to the development of environmentally friendly and safer automobiles by providing efficient lamp control and reduced vehicle weight for greater fuel efficiency. Renesas Electronics plans to develop additional IPDs that offer even more protection functions.

Samples of Renesas Electronics’ µPD166011, µPD166013 and µPD166014 devices are available now priced at US$1.75, US$1.30 and US$1.99 per unit respectively, in 1,000-unit quantities . Mass production is scheduled to begin in December 2011.