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How to generate a -12V DC voltage?

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JimLo

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how to generate 12v

Could anybody help me to understand following parameters?


any schematic diagrams?
 

piao

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Using the negative charge pump. :)
 

Davood Amerion

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your schematic is a part of PMOS transistor datasheet!
the table is [ABSOLUTE MAXIMUM RATING]
it say you must not allow that condition exceded. and you must use in far fram its parameter.
for example maximum drain source voltage is -30V , it means that you must not give voltage grater than , say (-25)-(-27) V.
the rest of them is obvious.
 

v_c

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Another way to generate the -12V would be to use an inverting dc/dc converter -- this is sometimes known as a buck/boost converter. Do a google search and you will find lots of information about this converter. It is very popular and you can find control ICs from ON Semiconductor, National Semiconductor, Texas Instruments, etc.

Best regards,
\[v_c\]
 
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