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Hardware Description
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
Converter on a TMS320F280x Digital Signal
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:
design
files.
4.1 Schematic
The LaunchPad's schematic can be found at this link:
4.2 PCB Layout
The layout source files for the LAUNCHXL-F280039C are included in the
download.
™
16
C2000
F28003x Series LaunchPad
Control.
LAUNCHXL-F280039C
™
Development Kit
Copyright © 2022 Texas Instruments Incorporated
Using PWM Output as a Digital-to-Analog
LAUNCHXL-F280039C
Schematic.
LAUNCHXL-F280039C design files
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SPRUJ31 – APRIL 2022
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