SLUA888 May   2018 TPS53622 , TPS53659 , TPS53679 , TPS53681

 

  1.   NVM Programming for VR13 Power Controllers
    1.     Trademarks
    2. 1 Introduction
      1. 1.1 Software Tools
        1. 1.1.1 Fusion Digital Power Designer
        2. 1.1.2 Fusion Manufacturing Tool
        3. 1.1.3 Online and Offline Modes
        4. 1.1.4 Relevant File Formats
      2. 1.2 Hardware Tools
        1. 1.2.1 USB-to-GPIO Dongle
    3. 2 Technical Overview
      1. 2.1 Hardware Connections
      2. 2.2 Communication Protocol and Interfacing
      3. 2.3 Programming Process
        1. 2.3.1 Programming Procedure
        2. 2.3.2 Example NVM Data
    4. 3 Use of TI Programming Tools
      1. 3.1 Fusion Digital Power Designer
        1. 3.1.1 Build and Export a System (.tifsp) File
        2. 3.1.2 View a Project File or System File Offline
        3. 3.1.3 Import a Project File to a Single Online Device
        4. 3.1.4 Import a System File to an Online System
        5. 3.1.5 Export CSV Script for Third Party Tools
        6. 3.1.6 Compare Two Project Files
        7. 3.1.7 Build a System File from Existing Project Files
      2. 3.2 Fusion Manufacturing Tool
        1. 3.2.1 Import a System File
      3. 3.3 TI Programming Board
        1. 3.3.1 Board and Connector Description
        2. 3.3.2 Placing devices in the 40-pin socket

2.1 Hardware Connections

You can program NVM on a fully-populated application board. However, successful programming requires only a few connections be made to these devices. In some cases offline gang-programming in socketed boards works better than a full In Circuit Test (ICT) solution.

Table 2. Hardware Connections for Offline NVM Programming

Pin Name Connection
V3P3 Connect to +3.3V supply, and bypass with a minimum of 1.0 µF to ground.
VREF Bypass to ground with a minimum of 1.0 µF to ground.
ADDR Connect a resistor divider from VREF to ADDR to Ground to set the PMBus address (required for programming), as described in the product datasheet.
SMB_DIO, SMB_CLK Connect to programming host, pull-up to 3.3V with a 2.2 kΩ resistor. Note, the TI USB-to-GPIO interface adapter has internal pull-up resistors.
ATSEN, BTSEN, TSEN Not used for NVM programming. Tie-off with a 1:1 resistor divider from VREF to TSEN to Ground, suggested resistor value is 49.9 kΩ. This sets the pin voltage to appx. 0.85 V, which the controller device interprets as 32°C.
AVR_EN, BVR_EN, VIN_CSNIN, CSPIN, AVSP, BVSP, AVSN, BVSN Not used for NVM programming. Tie-off to ground.
ACSPx, BCSPx Not used for NVM programming. Tie off to VREF.
APWMx, BPWMx, ASKIP, BSKIP, VRFAULT, SMBALERT, SALERT, PIN_ALT, SDIO, SCLK Not used for NVM programming. Float these pins if not used.
dongle_connection.gifFigure 1. Hardware Connections