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Power Supply & Batteries
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Topic starter
2020-11-06 1:51 pm
Is it possible to add some form adjustment to the output of the supply and be able to setup your 12vlt lead as main feed and and have the 5v and 3.3v be separated out for powering different logic circuits but still be able to have variability on the 12v output? My thinking would be to use a buck converter to be able to get higher than the 12v such as the HiLetgo LTC3780 DC-DC 5V-32V to 1V-30V 10A Constant Voltage Current Automatic Step-up Step-Down Regulator Charging Module, a potentiometer for the adjustment, and a volt/amp meter such as thie MCIGICM 0.28" LED Voltmeter Ammeter, Red and Blue Digital Multimeter Display Voltage Current Tester,DC 0-100V 10A Detector Voltage Current Meter Panel Amp Volt Gauge for a display.
Could a 12v 10amp fuse handle higher voltage but with lower current? If my thinking is correct, I believe it could. If not, would it be a possible solution to use a larger fuse for this application?
Robert T.
IT Systems Administrator
"In the storms of your life may your heart soar like the eagle." ~ Unknown Author
2020-11-06 5:20 pm
Hi Robert,
I just looked up information on the HiLetGo LTC3780. I have never heard of this before. Some of the features, as noted on the data sheet, include the following:
Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Wide VIN Range: 4V to 36V Operation Synchronous Rectification: Up to 98% Efficiency Current Mode Control ±1% Output Voltage Accuracy: 0.8V < VOUT < 30V Phase-Lockable Fixed Frequency: 200kHz to 400kHz Power Good Output Voltage Monitor Internal LDO for MOSFET Supply Quad N-Channel MOSFET Synchronous Drive VOUT Disconnected from VIN During Shutdown Adjustable Soft-Start Current Ramping Foldback Output Current Limiting Selectable Low Current Modes Output Overvoltage Protection Available in 24-Lead SSOP and Exposed Pad (5mm × 5mm) 32-Lead QFN Packages
I don't understand some of these features, or what exactly this module is capable of. It does sound like you have some idea of how to incorporate it into an awesome bench power supply. Please post more information about this project. I just have an old ATX power supply on my bench. I would really like to have a variable power supply.
ZoolanderMicro, where small ideas are a big deal