Intersil Offers TFT- LCD Power Supplies For Powering Automotive Displays

Intersil Corp. announced the release of the ISL78020 and ISL78022, two new automotive grade TFT-LCD dc-dc regulators with integrated amplifiers that incorporate multiple IC functions into what is described as a single, rugged solution.

The devices are AEC-Q100-rated, fully ISO/TS 16949:2002-compliant and operate over the automotive temperature range (-40 to +105°C) with what is described as high integration to improve performance and reduce costs associated with powering 7-to-15 inch displays.

With what is claimed to be higher voltage capability (>20V) than competitive automotive TFT-LCD power supplies, the ISL78020 and ISL78022 are protected against voltage spikes generated by the combination of stray capacitance and inductance during switching. This higher voltage capability is said to eliminate a common reliability issue found in other existing solutions.

These new power supplies also feature integrated sequencing, regulated charge pumps, an 18V/3A integrated boost FET, VCOM amplifiers and fault protection features to save board space and BOM costs of additional discrete solutions. The ISL78022 also integrates five gamma amplifiers.

The ISL78020 and ISL78022 come in thin 7 x 7mm TQFP packages that are claimed to withstand greater levels of vibration compared to other package designs. This package also allows automotive electronics designers the ability to actually inspect the pins during PCB assembly.

The ISL78020 and ISL78022 are available now in 32-lead, 7 x 7mm TQFP packages. The ISL78020 is priced at $2.71 per unit in 1,000-unit quantities and $2.73 per unit in tape-and-reel configuration. The ISL78022 is priced at $4.07 per unit in 1,000-unit quantities and $4.10 per unit in tape-and-reel configuration.