PMICs drive optimised power for ADAS functions

These features include smart braking for collision avoidance, GPS/navigation, adaptive cruise control, lane centering, lane-departure warning, and back-up/surround video. Although these functions receive considerable design attention, managing DC power in electrically harsh vehicle environments is a less-publicised yet critical challenge for ADAS system designers.

Maxim’s array of application-optimised ICs regulate, manage, and protect DC power. These products solve critical problems for ADAS systems designers by offering a combination of package size, high operating efficiency, low quiescent current, integrated ASIL-B/D electrical protection, and reduced EMI.

The series of PMICs which Maxim has released include:
• MAX20019 Dual Synchronous Step-Down Converter – Provides the industry’s smallest 3.2MHz dual step-down power supply in a 2mm × 3mm package size (compared to the closest competing solutions that offer single channel parts in either a 2mm x 2mm or 3mm x 3mm package size)
• MAX20087 Quad Camera Power Protector – ASIL-B/D grade camera module protector IC includes an I2C interface to report on overvoltage/undervoltage/fault conditions; monitors up to four 600mA coax channels and isolates faults from individual camera modules
• MAX20075 and MAX20076 Step-Down Converters – Offers the industry's lowest quiescent current with peak and valley mode options; provides a high peak efficiency of 91% for always-on applications compared to competing solutions, while featuring a 40V load-dump tolerance
• MAX20014 Triple-Output Converter – Features one synchronous boost and two synchronous step-down converters for smaller, simpler, and lower cost designs (competing approaches require two ICs plus discrete components); features 2.2MHz switching frequency and spread-spectrum capability for reduced EMI and comes in a small 4mm x 4mm package size