I intend to use only one power supply for my project. It can supply 5A of current (though, my max load would need 1,6 so I am good whith the amount of current)
The question is what step down units are recommended so I could make 4,5 , 6, and 9V outputs.
I have no expiriance with voltage divaders so before I purchased some parts I would like to know downsides of different devices :
All epoxy sealed containers with Waterproof Housing;
Light compact, convenient to use and transport;
Reliable, low heat dissipation max. 40 ?;
With overload / over-current / over / low voltage protection, stable performance.
Input range: 8~23v
Cable length: 100mm
Dimensions: length (45mm) wide (31mm) high (22mm)
Input: DC 10-15V
Ouput: DC 0.9-12V
Ouput Current: 5A
Output Power (MAX): 25W
Efficiency: 93% (12V to 5V/5A)
12V to 5V/2A:
Efficiency = (5.00 * 2.000) / (12.00 * 0.894) * 100% = 93.2%
2V to 5V/4A:
Efficiency = (5.00 * 4.000) / (12.00 * 1.782) * 100% = 93.5%
12V to 5V/6A:
Efficiency = (5.00 * 6.000) / (12.00 * 2.705) * 100% = 92.4%
12V to 5V/8A: ( A serious decline in the efficiency, Severe fever)
Efficiency = (5.00 * 8.000) / (12.00 * 3.680) * 100% = 90.6%
Input voltage: DC 7-20V
Output voltage: DC 5V
Output Current: 1A (can work at 1A for long time)
Rated continuous current: 1A
Output power: 5W rated continuous
What about this? (I guess it woun't do a job alone)
Product Name Positive Voltage Regulator
Pin Length 13mm / 0.511"
Pin Spacing Pitch 2.5mm / 0.098"
Body Size 16 x 10 x 5mm / 0.6" x 0.4" x 0.2"(L * W* T)
Hole Diameter 3.6mm / 0.14"
Color As Picture Show
Three-terminal positive regulator are available in the TO-220 package and
with several fixed output voltages, making them useful in a wide range of applications.
Output Current up to 1.5A.
Thermal Overload Protection .
Short Circuit Protection.
Output transition SOA protection.
I am sure there are plenty of other options.
I guess it's all about resistors ( pull down) which means they will use some current all the time.
That means heat too but I guess I can live with it. I use my device once a week and it's on just for a 4 hours.
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