The device is designed to replace four or five discrete ICs with a single power management solution.
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.
The Max16923 offers 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.
Maxim says the chip’s high level of integration can reduce an automotive power solution from four or five ICs down to one, without making the temperature rise significantly.
Additionally, EMI mitigation and the watchdog timer are included to improve reliability of each display.
The firm claims the Max16923 is the first automotive power management IC to integrate five functions (HV buck converter and LDO, LV buck converter and LDO and watchdog timer) into a single chip.
It incorporates spread spectrum, slew-rate controlled switching and programmable switching frequency to reduce EMI interference on low noise signal to the display.
Greg Basich, associate director of the automotive infotainment & telematics service at Strategy Analytics says “Some premium vehicles may have as many as 10 displays. In this environment, designers are also grappling with the growing number of electronics they need to integrate into cars as space constraints may limit this expansion.”
Szukang Hsien, executive business manager, automotive business unit at Maxim Integrated says “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.”
