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DC-DC converter or charge pump (Read 3429 times)

bharat Community Member Offline Posts: 57	DC-DC converter or charge pump Oct 17^th, 2006, 10:37am An input of 5V, 500mA is to be converted to 12V,2mA. Should I go for DC-DC converter or Charge pump. As per my understanding, for DC-DC converter the input has to be pulse. Should I think of changing the DC vltage to pulse to use the DC-DC converter OR charge pump should be better bet. Please suggest, Thanks
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qadeer

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Re: DC-DC converter or charge pump
Reply #1 - Feb 8^th, 2007, 11:46pm

For dc-dc converter u have to use internal internal osc and ramp generator and o/p is controlled through duty cycle....dc-dc conv generally require external inductors and used if drive current is higher.

For 2mA of drive, I think 3x regulated chargepump would be a better option. Here also u will be needing an internal osc for pumping the charge.

Qadeer

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