12V/48V power distribution box

Products and reference designs

12V/48V power distribution box

Block diagram

Overview

Our integrated circuits and reference designs for automotive power distribution box (PDB) provide you with a total PDB or smart junction box system design including LDOs, CAN and LIN in-vehicle networking, limp home functionality and smart power switches.

Design requirements

Modern PDBs require:

  • Switching power to a wide range of loads.
  • Reduced EMI to optimize system performance.
  • Optimized thermals to manage power dissipation.

Block diagram

Find products and reference designs for your system.

12V/48V power distribution box

Discrete or system basis chip (SBC) Discrete or system basis chip (SBC) Zone ECU Zone ECU Powered at all time Powered at all time Load Load CAN bus CAN bus CAN CAN CAN CAN CAN ESD CAN ESD MCU MCU MCU MCU Diagnostic inputs Diagnostic inputs Comparator Comparator Temperature sense Temperature sense Logic Logic ECU ECU Load Load DC/DC converter DC/DC converter High Voltage Battery High Voltage Battery DC/DC converter DC/DC converter 12V Battery 12V Battery Pre-fuse box Pre-fuse box Off Board Off Board Off Board Loads/ECUs Off Board Loads/ECUs Motor Motor Power Distribution Box Power Distribution Box Power switched on/off Power switched on/off Load Load Load Load Power switched on/off Power switched on/off Power supply Power supply Supervisor Supervisor Watchdog Watchdog Reverse battery protection Reverse battery protection Supply OR/power mux Supply OR/power mux Voltage regulator Voltage regulator Load drivers Load drivers HS switches HS switches HS switch controller HS switch controller Motor drivers Motor drivers Current sense Current sense Reverse current protection Reverse current protection Smart fuse Smart fuse HS switches HS switches Current sense Current sense HS switch controllers HS switch controllers

Technical documentation

View all 4
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Type Title Date
Application note High-Side Switches Paralleling Channels 30 Apr 2018
Application note Adjustable Current Limit of Smart Power Switches (Rev. B) 21 Jan 2019
White paper Evolution vs. revolution: the building blocks of automotive body electronics 11 Apr 2018
Application brief 12-V Battery Monitoring in an Automotive Module (Rev. A) PDF | HTML 10 May 2022

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