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: Single EVM

  1. Connect Power to the EVM.
  2. Connect the EVM to the Host PC through the USB. If the power is provided by the USB cable, apply the appropriate jumper connection to connect EN_5V0 with 3.3V and VCCA with 5.0V, see Table 3-5.
  3. Launch the GUI and evaluate.

Terminal J9, labeled VCCA in Figure 2-1, can accept wire gauges up to 14 AWG. The voltage supplied must be within the input range of the device, 2.8 V to 5.5 V. The power supply providing the input to VCCA is required to supply 135 % of the output power. Once power has been supplied to VCCA, the GPIO4 / ENABLE jumper can be used to power on the output rails (in LP87644Q1EVM GPIO2 can be used to control BUCK4 after GPIO4 has been set high). The default ON Request for the controller device is the ENABLE pin which is a level sensitive input. Please refer to LP8764-Q1 datasheet for more details.

Figure 2-1 shows the LP8764x-Q1 EVM (controller).

Figure 2-1 EVM Top View