Renesas Unveils Complete Power and Functional Safety Solution for R-Car V3H SoC

The solution satisfies all the power and functional safety requirements for the R-Car V3H. It provides supply voltages with the current capability to meet all power specifications, including sequence, voltage accuracy, and load step response. For safety, it provides all the necessary power and digital monitoring functions.

March 30, 2021. By Manu Tayal

Tokyo-headquartered semiconductor manufacturer Renesas Electronics Corporation has launched a new power and functional safety solution for systems based on the R-Car V3H system-on-chip (SoC) for advanced driver assistance systems (ADAS) automotive front cameras and driver monitor cameras.

The new solution includes the RAA271050, a 42V synchronous buck ‘pre-regulator’ that accepts the vehicle’s 12V supply and steps it down to an intermediate supply voltage of 3.3V or 5.0V. The RAA271000, a seven-channel PMIC (power management IC), then takes the RAA271050’s output and steps it down further to the various supply voltages needed by R-Car V3H and its peripherals such as LPDDR4 memory. Both devices were developed per the ISO-26262 standard, and can support system safety requirements up to ASIL D.

The solution satisfies all the power and functional safety requirements for the R-Car V3H. It provides supply voltages with the current capability to meet all power specifications, including sequence, voltage accuracy, and load step response. For safety, it provides all the necessary power and digital monitoring functions.

The new solution provides best-in-class efficiency, with power loss reductions of up to 33 percent compared to competitive PMICs under comparable operating conditions. Lower power loss enables operation at higher temperatures, reducing cooling costs and delivering better reliability.

Additionally, the RAA271050 and RAA271000 were designed to match R-Car requirements with no unnecessary overhead, reducing component cost and PCB area. The company has been providing a reference hardware solution that includes the new components, speeding design time and reducing testing requirements for customers.

Commenting on the new product launch, Niall Lyne, Vice President of Renesas’ Automotive Analog Power and Video Business Division, said “this new power and functional safety solution showcases our power design expertise to offer R-Car V3H customers significant cost savings.”

“And we’re delivering a complete, tested design that enables designers to implement the latest in ADAS camera applications quickly and efficiently,” Lyne added.

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