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DC to DC converter's output capacitor

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yen

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Dear all,

If I choose capacitor like ceramic capacitor or Tantalum capacitor, which is

cheaper? My bulk is voltage mode, which compensation is suit for lower esr (like

30 mohm). Generally, the esr of ti or analog device's bulk is used from ? to ?.

Can bulk be used the small esr? Is phase margin bigger than 30 or 40 ? thanks.
 

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