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Power charger and supply regulator
Asgard shared his BLiVIT project in the forum: One of the things I have noticed missing, for a pretty long time, is a good *safe* lithium cell charger that also supplies a load with a good efficient...
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FT230X charger detection investigation
Baoshi writes: I bought some FT230X (FT230XS) USB-USART bridge chip recently for a new design. FT230X is not only cheaper than the traditional FT232RL, but also offers a new fancy “USB charger...
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Simple 6x USB charger with current monitor
Frank Zhao shared his simple 6x USB charger with current monitor in the project log forum: This is a simple 6 port USB device charger with a individual current monitor on each port. The charging...
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A 5c lithium ion battery charger
Nerd Ralph writes: As various sites explain, lithium-ion rechargeable batteries should be charged to 4.2 volts. USB ports provide 5V, so all I needed was a way to drop 5V down to 4.2 or less. Standard...
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BT-C3100 intelligent battery charger teardown
Alan Parekh of Hacked Gadgets writes: Thanks to GearBest for sending in this Opus BT-C3100 V2.0 Intelligent Battery Charger for review. at a quick glance this charger might look like any other charger...
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Cheap USB LiPo charger notes
Jim writes: Since I use a variety of cells, I wanted to be able to charge at Chip2014under 1A. Most such charge controllers have a single resistor that programs the bulk charge current, so I looked...
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A 3.6V LiFePO4 charger for under 50c
Nerd Ralph built his own 3.6V LiFePO4 charger: I like LiFePO4 batteries. They have a rather flat discharge at around 3.2V, which is ideal for powering 3.3V devices without a regulator. You can also...
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Counterfeit Macbook charger teardown: convincing outside but dangerous inside
Ken Shirriff writes, “What’s inside a counterfeit Macbook charger? After my Macbook charger teardown, a reader sent me a charger he suspected was counterfeit. From the outside, this charger is almost...
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Building a 12V DC MagSafe charger
Steve blogged about his 12V DC MagSafe charger built: Now that I have a solar-powered 12V battery, how can I charge my laptop from it? An inverter would seem absurdly inefficient, converting from 12V...
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App note: Implementing a practical off-line Lithium-Ion charger using the...
App note from Texas Instruments about Li-Ion battery charger design. Link here (PDF) A primary goal in the design of any portable electronic device is to make the product as small and lightweight as...
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