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Texas Instruments TL494 | Demoboard TIDA-01426
Reference Design for Line AC Voltage Generation From Low-Voltage DC Source for Sensor Excitation
Overview
| Topology | Push-Pull Converter symmetrical isolated |
| Input voltage | 8-36 V |
| Switching frequency | 100 kHz |
| Output 1 | 250 V / 0 A |
| Output 2 | 250 V / 0 A |
Description
This reference design demonstrates a method fordesigners to achieve high-voltage signals that can beused for flame detection using discrete components.The reference design is built with a low BOM cost andsmall solution size in mind. By using push-pullconverter topology, it is possible to achieve a wideinput range and low start-up time.
Features
- Universal Input Range of 10 to 36 V
- 120-V, 60-Hz Output up to 4% THD
- 56-ms Startup Time at 10 V
- 5% Output Accuracy
- Output Power up to 1 W
- Low Footprint and BOM Cost
Typical applications
- HVAC Valve and Actuator Control, sensor Transmitter, system controller