Intelligent power device enables flexible power distribution in E/E architectures

1 min read

Renesas Electronics has announced an automotive Intelligent Power Device (IPD) that it says will safely and flexibly control power distribution within vehicles, addressing the requirements of next-generation E/E (electrical/electronic) architectures.

The RAJ2810024H12HPD is available in the TO-252-7 package and has been designed to reduce the mounting area by about 40% compared to the conventional TO-263 package product. In addition, the advanced current detection function of the device allows highly accurate detection of abnormal currents such as overcurrent.

Since the IPD is able to detect abnormal currents even at low loads, engineers will now be able to design highly safe and precise power control systems that can detect even the smallest abnormalities.

"We are very pleased to launch a new generation of automotive IPDs featuring our new power MOSFET process,” said Akira Omichi, Vice President of Renesas' Automotive Analog Application Specific Business Division. “Renesas will continue to develop IPDs that improve the safety and reliability of power supply systems and facilitate system development for our customers by offering system-level solutions with our microcontrollers.”

The IPD was developed to address the requirements as E/E architectures which continue to evolve. In a conventional distributed E/E architecture, the power supply from the battery is distributed to each Electronic Control Unit (ECU) via long, thick wires from a power box consisting of mechanical relays and fuses. IPDs have a longer life and are maintenance-free compared to mechanical relays, so they can be placed anywhere in the vehicle.

As the automotive industry moves toward centralised or zone-oriented E/E architectures, IPDs are becoming essential for building efficient and flexible power supply networks since they use shorter, thinner wires.

Renesas is offering the Power Distribution Box with E-fuse solution using an existing IPD. By replacing the conventional fuses in the power supply box with small IPDs and programming the fuse characteristics into the microcontroller, developers are able to optimise the wiring harness and improve reliability through current monitoring.