Summary:
The DPA-Switch greatly simplifies the design compared to the discrete device design. R1 sets the input under/overvoltage points to 33 V and 86 V, respectively. These threshold voltages, including tolerances, ensure that the converter operates between 36 V and 75 V without adding additional line voltage sensing components.
design feature
- Very few components
- High efficiency - 85% efficiency with Schottky rectifiers
- No need to use current sense resistors or current transformers
- Accurate input undervoltage/overvoltage meets ETSI standards
- No-load operation, no dummy load requirements
- Output overload, loop open loop, overheat protection
- 400 kHz operation minimizes core size
Schematic diagram of a flyback DC-DC converter using DPA–Switch
See the uploading documentation for details (click to download)
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