TIDUDT4A May   2018  – November 2021 AM3351 , AM3352 , AM3354 , AM3356 , AM3357 , AM3358 , AM3358-EP , AM3359

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Power Rails Requirements of the System
      2. 2.2.2 Power Sequencing Requirements of the System
      3. 2.2.3 Uncontrolled Power Off
      4. 2.2.4 12-V Input Voltage Rail
    3. 2.3 Highlighted Products
      1. 2.3.1 TLV62568/9
      2. 2.3.2 LM3881
      3. 2.3.3 TLV803
      4. 2.3.4 AM335x
      5. 2.3.5 WL1837MOD
    4. 2.4 System Design Theory
      1. 2.4.1 Power Tree Architecture
      2. 2.4.2 Power Sequencing Solution
        1. 2.4.2.1 Design Steps for DC-DCs
        2. 2.4.2.2 Design Steps for the Sequencer
        3. 2.4.2.3 Design Steps for the Supervisor
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
        1. 3.1.1.1 Connector Configuration of TIDA-01568
        2. 3.1.1.2 Procedure for Board Bring-up and Testing
      2. 3.1.2 Software
        1. 3.1.2.1 Description of Environment Implementation
        2. 3.1.2.2 How to Customize the Processor SDK for This Reference Design
      3. 3.1.3 Software Bring-up Tips
    2. 3.2 Testing and Results
      1. 3.2.1 Test Setup
      2. 3.2.2 Test Results
        1. 3.2.2.1 Power-Up and Power-Down Sequence Test
        2. 3.2.2.2 Typical Characteristics of DC-DCs
  9. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
      1. 4.3.1 PCB Layout Guidelines
      2. 4.3.2 Layout Prints
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
  10. 5Software Files
  11. 6Related Documentation
    1. 6.1 Trademarks
  12. 7About the Author
  13. 8Revision History

Description

This reference design demonstrates a validated and cost competitive power sequencing solution for an application processor or a high performance control platform. This solution supports 5 different voltage rails, optimized with layout space of 12 mm × 12 mm. This design is also capable of adjusting delay time and re-configuring specific voltage level for each rail to fit different input capacitors and different processors' requirements.

This reference design is based on TI's AM335x processor and WiLink8™ module WL1837MOD, building a high performance control platform, which is a benefit to bring more features and better performance in smart appliances or automation applications.

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