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发表于 2018-8-12 18:49:56
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本帖最后由 cne53102 于 2018-8-12 19:24 编辑
3R33 is the shortname of KIS3R33, which is a 3.3V 3A DC-DC Buck Power module.There is a MP2307 in it.
I am not sure who made this module, japanese?korean?chinese? maybe japanese, i remember that is saw its webpage, but i didn't saved it, and i can't find it now.
a few years ago, there was a large amount of used KIS3R33 module on market, very cheap, about 1.x RMB, many people bought this module and modified it to what they want, boost, buck, negative and constant current driver for LEDs. this module works well, people felt that it was very stable and the performace was very good(Rugged? i don't know which word is right, its just quite 耐操。。)
Maybe Because of the excellent performance of this module, people also have a very good impression of the MPS power chip.
Siemens' PLC also uses MPS power chip, it should be really good.
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