Joeisi
Member level 1
Hello.
I have designed a circuit to operate in a CAT Loader. This is not a modern CAT, but one from the 1980's. These Loaders run on 24V batteries. I was planning on just hooking a LDO linear regulator up to this supply. After a perfectly operating board was installed(Note: 3.3v system), the LDO was overcome by noise and did not output a voltage. After further inspection the loader's battery actually gave me a voltage of about 20V with 4Vpp with spikes about 5 times a second. The LDO operated normally at a smooth 24v
I was wondering if a switching regulator like this LM2574N-5.0/NOPB could suppress the noise due to the switching nature of the supply, or if anyone here would recommend a certain circuit to me to solve this. Batteries, as well as abnormally large capacitors are absolutely out of the question due to cost. I guess another way of asking is whether the above switching mode regulator will operate under the large voltage swings. In theory, the actual switching part of the regulator will operate normally with any voltage swing, but I am worried about the timing circuit not operating. Could someone shine some light on the subject?
I have designed a circuit to operate in a CAT Loader. This is not a modern CAT, but one from the 1980's. These Loaders run on 24V batteries. I was planning on just hooking a LDO linear regulator up to this supply. After a perfectly operating board was installed(Note: 3.3v system), the LDO was overcome by noise and did not output a voltage. After further inspection the loader's battery actually gave me a voltage of about 20V with 4Vpp with spikes about 5 times a second. The LDO operated normally at a smooth 24v
I was wondering if a switching regulator like this LM2574N-5.0/NOPB could suppress the noise due to the switching nature of the supply, or if anyone here would recommend a certain circuit to me to solve this. Batteries, as well as abnormally large capacitors are absolutely out of the question due to cost. I guess another way of asking is whether the above switching mode regulator will operate under the large voltage swings. In theory, the actual switching part of the regulator will operate normally with any voltage swing, but I am worried about the timing circuit not operating. Could someone shine some light on the subject?
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