The highly integrated MAX16923 power-management integrated circuit enables OEMs to increase the number of electronic screens per vehicle. Graphic courtesy of Maxim Integrated Products Inc.

SAN JOSE, Calif.—A new power-management integrated circuit (IC) for automotive displays is reported to replace as many as five discrete ICs with a single power management chip, making it easier for automotive designers to increase the number of displays from two to five per vehicle. The developer of the chip, Maxim Integrated Products, Inc., said in a release that the MAX16923 power management IC (PMIC) is the first automotive power management IC to integrate five functions into a single IC to reduce complexity and size of the power management technology.

The number of automotive displays per vehicle continues to grow as OEMs seek to make cars more attractive with advanced instrument clusters, infotainment, heads-up displays, center displays, rear-seat entertainment, and smart mirror applications. “Some premium vehicles may have as many as 10 displays,” said Greg Basich, associate director of the automotive infotainment and telematics service at Strategy Analytics. Designers struggle with the complexity of adding these screens because the required power supply circuitry competes for space with a myriad of other electronic systems inside the car.

According to Maxim Integrated Products, the MAX16923 offers high integration with four power rails, featuring both a high-voltage and low-voltage buck converter, a high-voltage and low-voltage low-dropout (LDO) regulator, electromagnetic interference (EMI) mitigation, and a watchdog timer in a single IC. By reducing five-chip power management to a single chip, the MAX16923 is said to shrink space by up to 50 percent, reducing PCB size and bill-of-materials (BOM) costs.

“By reducing the number of ICs needed to support each display, the MAX16923 greatly reduces design complexity and board size issues,” said Szukang Hsien, executive business manager, automotive business unit at Maxim Integrated. “This highly integrated power solution along with the MAX20069 TFT bias and LED driver are able to cover the power requirements needed for 12.3 inch and smaller displays.”

Maxim Integrated (https://www.maximintegrated.com) is a developer of innovative analog and mixed-signal products and technologies that aim to “make systems smaller and smarter, with enhanced security and increased energy efficiency,” the company said in the release.

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