PMIC halves automotive display size

More displays can be used in a vehicle while design complexity is reduced, says Maxim Integrated, with the MAX16923 four-output display power IC with watchdog timer. It replaces four or five discrete ICs with a single power management IC (PMIC) to significantly shrink the solution size and makes it easier for automotive designers to increase the number of displays from two to five per vehicle, says Maxim.

the number of automotive displays per vehicle increases as OEMs include advanced instrument clusters, infotainment, heads-up displays (HUDs), centre displays, rear-seat entertainment and smart mirror applications. The power supply circuitry required for multiple screens, however, competes for space with other electronic systems inside the vehicle.

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. As well as reducing the number of automotive power ICs to just one, without making the temperature rise significantly, it also eases design complexity and reduces the power requirement by up to 50 per cent compared to the closest competitive solution, claims Maxim. Additionally, EMI mitigation and the watchdog timer improve reliability of each display.

“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.”
The MAX16923 is available now. Maxim also offers the MAX16923EVKIT# evaluation kit.

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