PMIC simplifies power design for car cameras

Renesas Electronics Corp. has introduced a new automotive power management IC (PMIC) for camera applications. The highly integrated ASIL B RAA271082 PMIC provides a universal power solution for automotive cameras and simplifies power supply design for camera applications that require functional safety compliance. These modules include surround view/satellite, rearview, driver monitor, and e-mirror.

Thanks to its high-level of programmability, “the RAA271082 supports the power requirements of almost any combination of image sensor, image signal processor (ISP), and encoder technology, while also supporting direct-from-battery as well as power-over coax supply,” said Renesas.

(Source: Renesas Electronics)

The RAA271082 is an ISO-26262 compliant, multi-rail power IC, which features a primary high-voltage synchronous buck regulator, two secondary low-voltage synchronous buck regulators, and a low-voltage LDO regulator. Other features include four overvoltage and undervoltage (OV/UV) monitors, I2C communications, a configurable general-purpose I/O pin, and a dedicated reset output/fault indicator.

The PMIC provides 1-A output current capability per switching regulator to support the power demands of high-resolution automotive image sensors.

To meet stringent ASIL B metrics, the RAA271082 includes a second independent reference for OV/UV monitors, built-in self-test at power-up, independent OV/UV monitoring, continuous CRC error checking on internal registers, and I2C communications, said the company.

The RAA271082 is a companion for the company’s Automotive High-Definition Link (AHL) technology that provides high-definition video using low-cost cables and connectors. The PMICs also can be used for 16- and 32-bit automotive MCUs in a variety of applications.

Renesas offers a Winning Combination reference design for automotive camera systems using both the RAA271082 and AHL. Visit Full Digital Cluster with AHL for more information. The RAA271082 and RTKA271082DE0000BU evaluation board are available now.