Analog PWM Generator 5V, 500kHz PWM Output
TIPD108
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
-
TIPD108 Design File
(ZIP 889 KB)
19 Sep 2013
- TIPD108 Verified Design Reference Guide
(PDF 806 KB)
19 Sep 2013
Description
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
See the Important Notice and Disclaimer covering reference designs and other TI resources.
