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  • Automotive Dual Buck Converter Reference Design for C2000™ MCU With Supervisor and Watchdog

    • TIDT359 October   2023

       

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  • Automotive Dual Buck Converter Reference Design for C2000™ MCU With Supervisor and Watchdog
  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Input Voltage Ripple
    4. 3.4 Load Transients
    5. 3.5 Start-Up Sequence
    6. 3.6 Voltage Supervisor
    7. 3.7 Watchdog
  8. IMPORTANT NOTICE
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Test Report

Automotive Dual Buck Converter Reference Design for C2000™ MCU With Supervisor and Watchdog

Description

This reference design is a flexible and compact power supply providing 5-V and 3.3-V output rails to supply the C2000™ MCU. The design includes 2 × LMR34206-Q1 devices (an ultra-small synchronous step-down converter) and one TPS3850-Q1 (a precision voltage supervisor with programmable window watchdog timer). In addition, a single D-type flip flop (SN74LVC2G74-Q1) is added to provide the compatibility of the watchdog with the C2000™ MCU start-up behavior.

Features

  • Dual output (5 V and 3.3 V)
  • High-efficiency conversion due to use of synchronous rectification
  • Precision voltage supervisor
  • Programmable window watchdog timer
  • Design was built and tested

 
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