SLVUCL3 December 2022
The DRV8317HEVM has several options for powering the LAUNCHXL-F280049C or an external MCU. Table 4-4 provides a description of the various MCU power options.
LAUNCHXL-F280049C connections | DRV8317HEVM connections | Result |
|---|---|---|
JP1, JP2, and JP3 are populated | R13 and R7 are populated | F280049C MCU is powered both from the USB of the LaunchPad and the 3V3 rail of the EVM’s buck regulator. |
JP1, JP2, and JP3 are populated | R13 is populated, R7 is not populated, no external 3V3 supplied to EVM | MCU is powered from the USB of the LaunchPad, and the LaunchPad will supply 3V3 to the EVM. |
JP1, JP2, and JP3 are populated | R13 is populated, R7 is not populated, external 3V3 supplied to EVM through the 3V3 test point | MCU is powered both from the USB of the LaunchPad and from the external 3V3 supplied to the EVM |
JP1, JP2, and JP3 are populated | R13 is not populated | MCU is powered from USB power supply |
JP3 is populated, JP1 and JP2 are not populated | R13 and R7 are populated | MCU is powered completely from the 3V3 of the buck of the EVM |
JP3 is populated, JP1 and JP2 are not populated | R13 is populated, R7 is not populated, external 3V3 supplied to EVM through the 3V3 test point | MCU is powered completely from the external 3V3 supplied to the EVM |