Introduction
Continuing in my fascination with Quick Charge 2.0 based chargers, this is the second teardown of the fast charge series.
Tools
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PureGear's Extreme USB Car Charger is an elegant cigarette lighter car charger with a smooth, matte outer casing.
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This charger is able to charge devices with Qualcomm Quick Charge 2.0 compatible processors up to 4 times faster.
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The adapter is rated at 12W with 5V/2.4A for Quick Charge compatible devices and 5V/1A for all others.
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The charger includes:
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USB adapter
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LED to indicated status of charge
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Just like most car chargers, the case does not have an obvious entry point.
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In order to get into the inner working, we will need to use our trusty plastic opening tool to pry off the lid to the charger.
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The lid is easy enough to remove and the green rim slides right out as well.
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Now we get out first glimpse at the circuitry that allows our Quick Charge 2.0 compatible devices to charge...well quick.
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From here we can see:
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USB adapter
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LED that shows charge status
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A big capacitor
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Some USB chip (assuming its proximity to the USB adapter)
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To separate the last part of the outer shell, we need to apply some pressure from with the vice grip pliers.
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Squeezing the shell across the seem causes the connecting tabs to separate enough for us to pry them apart.
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Inside the shell are three metal leads that fell out when the shell pieces separated.
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Finally we can see what makes this charger tick and It seems that there are two important chips at work here:
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Active-Semi ACT4533C DC/DC Converter
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Power Integrations CHY100D-TL Battery Management Charger Interface
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These two chips in tandem make this CLA possible with so few parts, including:
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a couple resistors and capacitors
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an inductor
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a fuse
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and two diodes
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PureGear Extreme USB Car Charger Repairability Score: 7 out of 10 (10 is easiest to repair)
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It was very easy to remove the lid of the casing
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There are few parts to disassemble
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There was not an obvious way to separate the two halves of the outer casing
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The charger reassembled very easily without any need for repair
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It's amazing how PureGear was able to make a Quick Charge 2.0 compatible charger with so few parts.
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3 comments
Any info on the USB chip?
I need help fixing a car charger. I think the fuse is blown. It's an Ainope AV804. I don't see how to take the face off. I'd rather send it to you for repair.
Please email me at: WFBanach@aol.com
Great insight on how to open one of these. I had a different vendor adapter and it opened almost exactly like the one you showed.
Thanks!
Marc -