Passive entry passive start (PEPS)

Products and reference designs

Passive entry passive start (PEPS)

Block diagram

Overview

Our integrated circuits and reference designs help you design passive entry passive start (PEPS) modules and key fobs that are secure and compact while reducing system power consumption and optimizing radio frequency (RF) and vehicle communication latencies.

Design requirements

PEPS automotive systems require:

  • Optimized power and range.
  • Secure relay attack prevention using Bluetooth Low Energy (BLE).
  • Achieve accurate localization using BLE while minimizing the number of nodes.

Block diagram

Find products and reference designs for your system.

PEPS BLE satellite module

Discrete implementation or system basis chip (SBC) Discrete implementation or system basis chip (SBC) Car battery Car battery 2.4GHz antenna 2.4GHz antenna Smart key module Smart key module Outside of the vehicle Outside of the vehicle PEPS key fob PEPS key fob Rest of the vehicle system Rest of the vehicle system Body control module (BCM) Body control module (BCM) Smart key module (may be integrated in the BCM) Smart key module(may be integrated in the BCM) BLE satellite modules (systems with BLE only) BLE satellite modules (systems with BLE only) LIN/CAN LIN/CAN 2-6 Off board 134kHz antennas 2-6 Off board 134kHz antennas Power supply Power supply LDO LDO Reverse battery protection Reverse battery protection Communication interface Communication interface CAN/LIN CAN/LIN CAN/LIN ESD CAN/LIN ESD RF interface RF interface BLE SoC BLE SoC

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