PWM generator circuit
CIRCUIT060010
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.
Key Document
- PWM generator circuit (Rev. A)
(PDF 178 KB)
01 Feb 2019
-
Simulation for PWM Generator Circuit
(ZIP 18 KB)
02 May 2018
Description
This circuit utilizes a triangle wave generator and comparator to generate a 500 kHz pulse-width modulated (PWM) waveform with a duty cycle that is inversely proportional to the input voltage. An op amp and comparator generate a triangle waveform which is applied to the inverting input of a second comparator. The input voltage is applied to the non-inverting input of this second comparator. By comparing the input waveform to the triangle wave, a PWM waveform is produced. The second comparator is placed in the feedback loop of an error amplifier to improve the accuracy and linearity of the output waveform.
Technical documentation
Application notes (1)
| Title | Type | Size (KB) | Date |
| 178 | 01 Feb 2019 |
User guides (1)
| Title | Type | Size (KB) | Date |
| 806 | 19 Sep 2013 |
White papers (1)
| Title | Type | Size (KB) | Date |
| 11294 | 18 Feb 2019 |
Design files (1)
| Title | Type | Size (KB) | Date |
| ZIP | 18 | 02 May 2018 |
Related Products
Design tools & simulation (2)
| Name | Part Number | Tool Type |
|---|---|---|
| Analog engineer's calculator | ANALOG-ENGINEER-CALC | Calculation tools |
| SPICE-based analog simulation program | TINA-TI | Simulation tools |
TI Devices (4)
| Part Number | Name | Product Family |
|---|---|---|
| OPA2353 | Dual high-speed, single-supply, rail-to-rail operational amplifiers MicroAmplifier™ series< | Operational amplifiers (op amps) |
| OPA2365 | 2.2V, 50MHz, Low-Noise Single-Supply Rail-to-Rail Operational Amplifiers | Operational amplifiers (op amps) |
| TL1454A | Dual-Channel Pulse-Width-Modulation (PWM) Control Circuit | Step-up (boost) regulators |
| TLV3502 | 4.5ns Rail-to-Rail Comparator | Amplifiers |
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