Summary:
The DPA-Switch greatly simplifies the design compared to designs that use separate devices. Resistor R1 sets the input under/overvoltage points to 33 V and 86 V, respectively. These thresholds, including tolerances, ensure that the converter can operate from 36 V to 75 V without the need for additional line voltage sensing components. Resistor R3 sets the internal current limit of DPA423R to 53% of the nominal value, which limits the output overload power under fault conditions.
design feature
- Small size: 35 mm x 20 mm (1.4 in. x 0.8 in.)
- High efficiency flyback design (minimum > 80%)
- 8.8 W power density per cubic inch
- Small number of components
- Precise line voltage OV and UV protection
- Overheat, short circuit and output overload protection
- Currentless sensing element
Flyback DC-DC converter circuit diagram using DPA-Switch
See the uploading documentation for details (click to download)
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Kunshan Zeitech Mechanical & Electrical Technology Co., Ltd , https://www.zeithe.com