IPD controller slashes board footprint
Renesas Electronics has launched a single channel high side Intelligent Power Device (IPD) in a TO-252-7 package that reduces the mounting area by 40% compared to the conventional TO-263 package.
The RAJ2810024H12HPD measures 6.10 x 6.50 mm, excluding pins, and is aimed at flexible control of power distribution within vehicles for next-generation architectures.
In a conventional distributed architecture, the power 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 centralized or zone-oriented E/E architectures, IPDs are used for building efficient and flexible power supply networks since they use shorter, thinner wires.
Key to this is the advanced current detection function that allows highly accurate detection of abnormal currents such as overcurrent at low loads. This allows engineers to design highly safe and precise power control systems that can detect even the smallest abnormalities. The IPD also includes a built-in charge pump and self-diagnostic feedback using the load current sensing.
The on-resistance (Ron) is 2.3mΩ at 25°C (typ.) and the IPD includes protection functions such as load short-circuit, overheat detection, sense current output, and GND open protection.
“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.”
Renesas offers a Power Distribution Box with E-fuse design 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 can optimize the wiring harness and improve reliability through current monitoring.
IPD Availability
The RAJ2810024H12HPD is available today in sample quantities with mass production scheduled in Q1/2024.
www.renesas.com/products/automotive-products/automotive-power-devices/
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