TIPD108

Analog PWM Generator 5V, 500kHz PWM Output

TIPD108

Design files

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
This Verified Design Includes:
  • Theory
  • Component Selection
  • TINA-TI Simulation
  • Schematics and PCB Layout
  • Verification and Measured Performance
  • Modification Options
Industrial

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.

Comparators

TLV35024.5ns Rail-to-Rail Comparator

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed op amps (GBW>=50MHz)

OPA23652.2V, 50MHz, Low-Noise Single-Supply Rail-to-Rail Operational Amplifiers

Data sheet document-pdfAcrobat PDF open-in-new HTML
Series voltage references

REF33252.5-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference

Data sheet document-pdfAcrobat PDF open-in-new HTML

Start development

Software

Support software

TIPD108 Simulation – TIDC147.ZIP (24 K)

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 2
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

Related design resources

Design tools & simulation

SIMULATION TOOL
TINA-TI SPICE-based analog simulation program

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos