This 110-VAC to 5-VDC at 30-mA non-isolated power supply reference design uses a low-power, low-cost, off-line buck converter and a low-noise, low-dropout voltage regulator to generate a non-isolated 5-V/30-mA output directly from a 110-VAC line input with under 10-mV output ripple across no-load and full-load conditions. Off-line converters are powered directly from the AC line by using a rectifier and capacitive filter and do not require a large 60-Hz transformer, thereby eliminating the heaviest and costliest component of a typical transformer-based power supply. The entire reference design is implemented on a single-sided, double-layer board size of just 63.2 mm x 38.1 mm with a bill-of-material (BOM) count of 20 devices.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | 110-V AC to 5-V DC at 30-mA Non-Isolated Power Supply Design Guide (Rev. C) | Jul 15, 2015 |
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