I have used 48V to 12V power module but it starts heating after some time where end device current consumption is around 200mA. Anyone, please help me to find the perfect circuit of power supply of 48V to 12V?
The 48V is the nominal voltage of the battery. Most common forklift batteries are lead acid type. Each cell is nominal 2V and there will be 24 cells in series. More commonly four 12V units are put in series.Hi,
when I connect it with Forklift battery which has 48V, but LM2596HVS got damaged.
I did a quick lookup of the LM2596 datasheet. The one I looked up is here: https://www.ti.com/lit/ds/symlink/lm2596.pdfCan I use a TVS diode of rating 60v at the input of the LM2596HVS converter?
LM2596HV has the ratings of 63Volts, almost 10volts above the input voltage i.e. 53volts(for full charge batteries). Still it burned out. the only thing now left is the spike voltages that might be generating because of the movement of fork lifter.I did a quick lookup of the LM2596 datasheet. The one I looked up is here: https://www.ti.com/lit/ds/symlink/lm2596.pdf
Under "Absolute Maximum Ratings" it says that the max input voltage is 45V
Under operating conditions, it says the input voltage is 40V max.
As a conservative designer, you should not use more than 35-38V at the input. That will keep some margin for noise.
Hence the answer is NO!
Better to look for different chips or modules.
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But you can try with a power zener diode in series with the input. The zener may be at lest 9-12V and rated for 1W or more.