High Efficiency Power Supply
Difficulty
Power
Summary
Learn the basics of electronics in making this high efficiency 5V power supply. Using the professional standard LM2678 5V step down ( or "buck" ) regulator, we can design a power supply that takes any voltage between 5-37 and bring it down to a constant and stable 5V rail. perfect for use in your projects. You will also learn the basics of how to read and understand datasheets.
Materials Required
| 1 | Voltage Regulator LM2678T-5 +5V step-down 5A TO-220-7 | ZV1636 |
| 3 | 22uF 63VDC Low ESR Electrolytic Capacitor | RE6342 |
| 1 | 0.47unF 50VDC Monolithic Capacitor | RC5498 |
| 1 | 10nF 50VDC Ceramic Capacitors - Pack of 2 | RC5348 |
| 2 | 220uF 16VDC Low ESR Electrolytic Capacitor | RE6312 |
| 1 | 100uH 3A Prewound Ferrite Choke | LF1272 |
| 1 | 1N5819 Schottky Diode - 40V 1A DO41 | ZR1020 |
| 2 | 2 Way PCB Mount Screw Terminals 5mm Pitch | HM3172 |
| 1 | Universal Pre-Punched Experimenters Board - Small | HP9550 |
Table of Contents
- Checking the datasheet
- Confirming the specification
- Selecting the components
- Laying out the PCB board
- Step 1: Position the starting terminal and input capacitors
- Step 2: Place regulator
- Step 3: Solder into place.
- Step 4: Place Regulator components
- Step 5: Output components and final soldering
- Final test and use
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