Reference Designs
Wide Input Range (140Vac to 440Vac) Non Isolated Off-line Flyback Converter with Multiple Outputs
Texas Instruments
An energy metering device very often needs non-isolated power, since the neutral is connected to the ground of the output. This is a typical application, when 1.8V, 3.3V, 12V and 18V are needed to supply digital and analog loads. Even though a small transformer is employed, the PSU delivers 9Wpeak power.
Features
- Wide input voltage range (line-neutral and line-line)
- Covers single phase and three phase applications
- Small EP7 transformer
- Uses high electrolytic capacitance value for 500msec hold-up time
Featured products
| Manufacturer: | Texas Instruments |
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