SLVUBX4A November   2020  – February 2022 LP8764-Q1


  1.   Trademarks
  2. 1Introduction
  3. 2Getting Started
    1. 2.1 Getting Started: Single EVM
    2. 2.2 Getting Started: Multiple EVM Evaluation
    3. 2.3 GUI Tool
  4. 3EVM Details
    1. 3.1 Terminal Blocks
    2. 3.2 Test Point Descriptions
    3. 3.3 Configuration Headers
    4. 3.4 Stack-up Headers
    5. 3.5 Connectors
    6. 3.6 Dip Switches
    7. 3.7 EVM Control and GPIO
  5. 4Customization
    1. 4.1 Changing the Communication Interface
    2. 4.2 Changing the Phase Configuration
  6. 5Schematic, Layout, and Bill of Materials
  7. 6Additional Resources
  8. 7Revision History

Getting Started: Multiple EVM Evaluation

  1. Connect Power to one EVM and remove the jumpers on all EVMs shorting 5.0V with VCCA and EN_5V0 with 3.3V (J25). All VCCA and GND power pins are shared between the stacked EVMs. Remove the VIO jumper (J32) from the target EVM.
  2. Connect controller EVM to the Host PC through the USB. In the event that the power is provided by the USB cable, apply the appropriate jumper connection to connect VCCA with 5.0V and 3.3V with EN_5V0 as shown Table 3-5.
  3. Stack controller EVM and target EVM(s). For convenience it is recommended to place the controller on the top of the stack.
  4. Launch the GUI and evaluate.

The EVM can be powered solely from the 5 V USB connection, provided that the total power taken from the USB port is less than 2 W. This removes the requirement for a separate supply when evaluating a number of the digital features of the PMIC with the EVM.

The distinguishing characteristics of the target EVM are the PMIC and the jumper position on J22. With the jumper on J22 placed in the target position, SPMI connection between controller and target EVMs is enabled. When EVM is defined as target the EVM I2C pull-ups are disabled to avoid too strong pull-up on I2C bus. Once the controller and target devices are stacked, supplying power on J9 is the only requirement for getting started. VCCA is distributed across all stacked boards through J28. The power supply can be applied to any of the available J9 terminals in the stack.