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electronrancher
Joined: 24 Mar 2002
Posts: 479
Helped: 34
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 14 Jul 2004 2:24 integrated charge pump |
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I have read a great deal of articles, and evaluated several varieties of charge pump cell in both CMOS & bipolar - has anyone else studied or built charge pumps? I'd like to open a discussion.
I'm talking mostly about integrated charge pumps, suitable for 100-200uA of high voltage generated inside an IC. The applications are:
-Hot swap and super low dropout LDO - pump the gate up to high voltage in order to decrease on-resistance to very low values
-EEPROM and Flash memory - generate an on-board programming voltage of around 12v, using 1.8, 3.3v or 5v supply.
So let me know if any of you have experience with these types of blocks - maybe we can trade advantages/disadvantages. Also, if you use these application IC's and you have any info on the charge pumps you have used, I am interested as well. Thanks, and best regards..
-er
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rfsystem
Joined: 25 Feb 2002
Posts: 811
Helped: 88
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| 14 Jul 2004 15:23 Re: integrated charge pump |
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If your high voltage interest is driving a varator at high voltage forget about an integrated
chargepump doing this. Use a regular 3-5V IC chargepump, or make your own, and drive an active
Opamp which high voltage output stage is either an drain-extension NMOS or an external NPN. The
feedback resistor/cap could be external.
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electronrancher
Joined: 24 Mar 2002
Posts: 479
Helped: 34
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| 15 Jul 2004 22:19 integrated charge pump |
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| nope, no interest in wireless. integrated charge pumps for gate pumping or flash programming supply.
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