TIDUEW7 May   2020

 

  1.    Description
  2.    Resources
  3.    Features
  4.    Applications
  5.    Design Images
  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 Processor – i.MX 6ULL Applications Processor
      2. 2.2.2 i.MX 6ULL Memory Interfaces
        1. 2.2.2.1 DDR3L
        2. 2.2.2.2 Quad SPI NOR Flash
        3. 2.2.2.3 eMMC iNAND
        4. 2.2.2.4 SD Card Connector
      3. 2.2.3 USB to UART Converter
      4. 2.2.4 USB Ports
      5. 2.2.5 LCD Screen Connector
      6. 2.2.6 JTAG Header
      7. 2.2.7 USB2ANY Header
      8. 2.2.8 Functional Switches and Status LEDs
      9. 2.2.9 GPIO Expansion Connector
    3. 2.3 Highlighted Products
      1. 2.3.1 TPS6521815 - Power Management IC
      2. 2.3.2 DP83849I - Dual Ethernet PHY
      3. 2.3.3 INA3221 - Current Monitor
      4. 2.3.4 Reset Scheme
      5. 2.3.5 TPS2054B, TPS22964C - Auxiliary Load Switches
    4. 2.4 System Design Theory
      1. 2.4.1 Power Estimation
      2. 2.4.2 Power Sequencing
      3. 2.4.3 I2C Device Chain
      4. 2.4.4 Clock Scheme
      5. 2.4.5 BOOT Configuration
      6. 2.4.6 PCB Floor Planning
  8. 3Getting Started, Testing Setup, and Test Results
    1. 3.1 Getting Started with Hardware and Software
      1. 3.1.1 Hardware
        1. 3.1.1.1 On-board LED Information
      2. 3.1.2 Software
        1. 3.1.2.1 Booting of TIDA-050043
        2. 3.1.2.2 Example Linux Commands for Testing TIDA-050043
  9. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 CAD Files
    4. 4.4 Gerber Files
    5. 4.5 Assembly Drawings
  10. 5Software Files
  11. 6Related Documentation
    1. 6.1 Trademarks
    2. 6.2 Third-Party Products Disclaimer

2.4.1 Power Estimation

This design is powered from a 5-V adapter. This 5 V is the main power supply to the TPS6521815 device. The PMIC will generate 6 different voltages: 1.275 V/1.325 V with dynamic voltage scaling (DVS), 1.35 V, 3.3 V, 1.8 V, 2.8 V, and a 2.4 V to 3.0V always-on supply for SNVS. The load switches LS2 and LS3 are used to power USB slave devices with 5.0 V. The estimated current consumption for each rail is listed in Table 4.

Table 4. System Power Estimation

VOLTAGE (V) SUPPLY IC, RAIL NAME SUPPLY CURRENT (mA) LOAD IC, RAIL NAME CURRENT (mA) POWER (mW)
1.275/1.325 TPS6521815, DCDC1 1800 iMX6 VDD_SOC_IN 500 663
1.35 TPS6521815, DCDC2 1800 iMX6 NVCC_DRAM 50 67.5
DDR3L VDD/VDDQ 290 392
3.3 TPS6521815, DCDC3 1800 iMX6 VDD_HIGH_IN 200 660
iMX6 NVCC_3V3 150 495
DP83849I IOVDD, ANA33VDD 50 165
IOVDD_LCD, VDD_LCD_BCKLIGHT 200 660
eMMC 40 132
SD Card 200 660
FT230X 10 33
USB Hub (USB2517) 460 1518
1.8 TPS6521815, DCDC4 1600 i.MX7 NVCC_1V8 100 489
eMMC 100 180
NOR Flash 35 63
2.8 TPS6521815, LDO1 400 VDD_LCD 200 560
5 TPS6521815, LS2/3 & TPS22964C
into TPS2054B & MIC2026		 1820 & 2000
into 4x500 & 2x500		 6x USB2 Ports 3000 15000
USB_OTG_VBUS 50 350
2.4 - 3.0 TPS6521815, DCDC6 25 iMX6 VDD_SNVS_IN 1 3
Total Estimated Power 22.1 W