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5A/5V Power Supply (Long) v1.1 Schematic

5A/5V Power Supply (Long) v1.1 Board Layout

Image Showing Operation of v1.0

Eagle CAD: v1.1 BoM

Eagle CAD: Digikey.ca v1.1 BoM

v1.1 PCB is out for fab

v4.2 Schematic

v4.2 Board Layout

v4.2 PCB Top

Digikey BOM

Short .mp4 Video (enlarge)

Description:

Three power supplies are shown here: two 5V and a 3v3 / 5v version.

Dual voltage 3v3/5v power supply is designed to be attached to your breadboard or soldered to your next PCB design (the two left GND jumpers provide physical support).

Features:

 - 3.3v and 5v DC output with power LEDs for each

 - Both 5v and 3.3v voltage regulators are 5A rated

 - With the exception of the male header pins and test points, all discrete components are SMT with a minimum size of 1206 for easier hand soldering

Power Input:

 - 2.1mm DC barrel jack: input 7v to 25vDC

Power Output:

 - 3v3 DC and 5v DC to a 'split' breadboard as shown in the v3.0 adjacent video at the bottom

 - Output current limit is up to 5A regulated by LM1084ISX and LM1585

v4.2 Features:

 - Separate 5 amp voltage regulators

 - Larger input polarity protection diode

 - On/Off switch problem fixed

 - 3 test points

 - 2 grounded mounting holes

v1.1 Long 5A/5V Power Supply:

 - Attach it to your upper 5v rail. There are two contact points for a secure fit.

 - Can run up to 5A for 5V and can be switched off

 - This power supply was needed to run dot LED Matrices with ESP32; its cheap 5v current regulator from USB cannot handle anything over 100mA or so