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

1.1 Key System Specifications

Table 1-1 Key System Specifications
PARAMETERSPECIFICATIONS
Input voltage range3.3 V to 5.5 V
Input power15 W
Output voltage rails3.3 V / 2 A, 1.8 V / 1 A, 1.1 V / 1 A 1.35 V / 1 A, 1.325 V / 1 A
Voltage ripple< 5% at 3.3 V, <5% at 1.8 V, <4% at 1.1 V, <5% at 1.35 V, <4% at 1.325 V
Power up/down SequenceMeet requirements of the AM335x at “RTC Feature Disabled” mode and WL183xMOD's requirements
Efficiency at 5 VIN>95% at 3.3 V, >90% at 1.8 V, >87% at 1.1 V >89% at 1.35 V, >89% at 1.325 V
Efficiency at 10 mA, 5 VIN>91% at 3.3 V, >84% at 1.8 V, >80% at 1.1 V >81% at 1.35 V, >81% at 1.325 V
Specification of board86 mm × 54 mm (12 mm × 12 mm for power part), 6 layer
Operating ambient–40°C to 85°C