TIPD108
Analog PWM Generator 5V, 500kHz PWM Output
TIPD108
Overview
This Verified Design utilizes a triangle wave generator and comparator to generate a pulse-width-modulated (PWM) waveform with a duty cycle that is inversely proportional to the input voltage. An op amp and comparator generate a triangular waveform which is passed to one input of a comparator. By passing the input voltage to the other comparator input, a PWM waveform is produced. Negative feedback of the PWM waveform to an error amplifier is utilized to ensure high accuracy and linearity of the output. The OPA2365 op amp, TLV3502 comparator, and REF3325 reference were used to build this design. See more TI Precision Designs
Features
- Utilizes a triangle wave generator and comparator to generate PWM waveform
- Single-Supply Solution
- -2V to 2V input, DC coupled
- 5V, 500kHz PWM output
- 0.22% Measured Gain Error
- 0.108% Measured Offset Error
- Theory
- Component Selection
- TINA-TI Simulation
- Schematics and PCB Layout
- Verification and Measured Performance
- Modification Options
Industrial
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
SLAC578.ZIP (889 K)
Detailed schematic diagram for design layout and components
TIDR186.PDF (89 K)
Detailed schematic diagram for design layout and components
TIDR208.PDF (61 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDC146.ZIP (795 K)
Design file that contains information on physical board layer of design PCB
Products
Includes TI products in the design and potential alternatives.
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | TIPD108 Verified Design Reference Guide | Sep. 19, 2013 | |
| Technical article | Have you considered using back-emf observers for sensorless speed estimation? | Mar. 14, 2014 |
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