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Solid State Automotive Power Distribution Module with eFuse

Overview

Description

Renesas provides an efficient power distribution network system built on intelligent power device (IPD) technologies. The advanced protection and diagnostic functions of IPDs enhance safety compared to mechanical relays. This system improves reliability and optimizes wiring harnesses with integrated current monitoring capabilities.

System Benefits​:

  • Reduces the size and weight of fuse boxes by integrating 10 output channels on a compact board, aligning with the smart eFuse (electronic fuse) concept.
  • eFuses provide maintenance-free load and wire protection, configurable for various cable types. Their high accuracy significantly reduces the weight of wiring harnesses.
  • Software-based eFuses are activated by current-sense feedback from the IPD to the MCU, which is programmed to implement the fuse function.
  • Safe parking mode*1 is emulated by activating the IPD and setting the MCU to low-power mode.

*1 Parking mode refers to a car parking situation where selected channels remain active with minimal power consumption.

Comparison

Applications

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AS-234 AS234 AS234 AS234 DC/DC LDO DC/DC LDO DC/DC LDO 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery x2 x2 x2 x4 x4 x4 x4 x4 x4 Power Distribution network for other ECUs Power Distribution network for other ECUs Power Distributionnetwork for other ECUs IPD 1 IPD IPD Connector Arrow.175 Connector Arrow.176 Connector Arrow Connector Arrow.189 Connector 1 Connector Line Connector Line.192 Connector Line.195 IPD 2 IPD IPD Connector Arrow.197 Connector Arrow.198 Connector Line.199 IPD 3 IPD IPD Connector Arrow.201 Connector Arrow.202 Connector Line.203 Connector 1.204 Connector Arrow.205 Connector Arrow.206 Connector Arrow.207 Connector 1.208 UART 1 UART UART Connector Arrow.183 CAN 1 CAN CAN Connector Arrow.180 LIN 1 LIN LIN Connector Arrow.158 Temp Sensor NTC Temp Sensor NTC Temp Sensor NTC Connector Arrow.158 MCU MCU MCU MCU VCC VCC VCC GPIO GPIO GPIO CONTROL Control Control UART 2 UART UART CAN 2 CAN CAN LIN 2 LIN LIN
https://labonthecloud.renesas.com/free-pass/power-distribution-box-with-e-fuse/67
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Videos & Training

eFuse concept based on Intelligent Power Devices (IPD)

A solution demonstrating the capability of IPDs to replace the relay and conventional fuses while contributing to higher safety, flexibility, and intelligence of future power distribution systems.