Reverted to original (OPs) question, because I had already answered that.

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Building a simple switching regulator for DC12V -> DC5V switching regulator controller selection

I want to build a circuit that provides USB power from a 12V battery (lipo or car battery) for my.

I have an iPad that draws 2A from its charger: soSo I'd like to get up to 10W output.

How do I chooseWhat's a SMPS controller? What are the tradeoffsgood choice for IC and inductor (and other components) for making this?

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occurred Apr 22, 2012 at 20:09

Changed from shopping-related to a pertinent on-topic design question. Changed tags.

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edited Apr 22, 2012 at 19:22

I want to build a circuit that provides USB power from a 12V battery (lipo or car battery).

I have an for my iPad that draws 2A from its charger: Soso I'd like to get up to 10W output.

What'sHow do I choose a good choice for IC and inductor (and other components) for making thisSMPS controller? What are the tradeoffs?

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asked Apr 22, 2012 at 18:02

Building a simple switching regulator for DC12V -> DC5V

I want to build a circuit that provides USB power from a 12V battery (lipo or car battery).

I have an iPad that draws 2A from its charger: So I'd like to get up to 10W output.

What's a good choice for IC and inductor (and other components) for making this?