3.3.7 PWM DAC
The LaunchPad provides up to four PWM DAC signals at the BoosterPack headers using GPIO0 (BP pin 40)
and GPIO1 (BP pin 39) on site 1 and GPIO12 (BP pin 80) and GPIO13 (BP pin 79) on site 2. The intended
purpose of the PWM DAC signals are to utilize PWMs of the F28003x device as digitial-to-analog converters
(DAC). This method involves low-pass filtering the PWM signal to remove its high-frequency components and
ideally leave only the DC component. For more information, see the Using PWM Output as a Digital-to-Analog
Converter on a TMS320F280x Digital Signal Control.
By default the RC filter is not populated. Instead a0 ohm resistor is populated and the capacitor is left un-
populated.
4 Board Design
The entire LAUNCHXL-F280039C design files are available for download at this link: LAUNCHXL-F280039C
design files.
4.1 Schematic
The LaunchPad's schematic can be found at this link: LAUNCHXL-F280039C Schematic.
4.2 PCB Layout
The layout source files for the LAUNCHXL-F280039C are included in the LAUNCHXL-F280039C design files
download.
Hardware Description www.ti.com
16 C2000
™
F28003x Series LaunchPad
™
Development Kit SPRUJ31 – APRIL 2022
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