Three corporate programmes can be built from the same charger, and the cost difference between them is a packaging and kitting difference rather than a product difference. Choosing the wrong one is how a programme ends up with an executive-quality …
A customer left a set of keys on the charging pad and found them warm an hour later. The product had passed its certification tests and its foreign object behaviour had never been described, so nobody could say whether it …
The protocol is the conversation between the charger and the device. Most wireless charging complaints trace back to a part of that conversation rather than to a component: the device asking for a level the charger does not offer, the …
Four decisions in coil design fix the product's behaviour: the geometry, the ferrite and shielding stack, the alignment tolerance and the thermal path. Each is a mechanical decision with an electrical consequence, and each is cheaper to take before the …
Two Qi2 programmes shipped in the same quarter. One had the certification scope, the array tolerance and the device list settled before tooling; the other settled them in the week the packaging went to print, and reprinted the cartons twice. …
A brand designed a magnetic charger, printed the platform name on the box and discovered that the name belongs to someone else. The product worked; the packaging did not. The two decisions — the engineering and the branding — are …
Wireless charging efficiency is lower than wired charging, and the number quoted usually includes or excludes different things. Before comparing two products, it is worth knowing where the losses sit: coupling, alignment, the coil and shielding, the convers……
Three items decide whether a wireless charging SKU can be described accurately on a box: the profile it implements, the certification scope that covers it, and the alignment method it relies on. A product can be fully functional and still …
The two names describe magnetic alignment in wireless charging, and they are not two versions of the same product. One is a specification maintained by the wireless power industry body; the other is a platform-specific implementation. A programme that treat……
A quasi-resonant arrangement buys one specific thing: it turns the primary switch on when the voltage across it has fallen to a valley, which reduces the loss that occurs at that instant. Everything else about the design follows from that …
The topology that wins in one enclosure loses in the next. Two programmes with the same output chose differently: the one with a volume constraint took the more complex architecture, the one with a cost constraint stayed with the simple …
Two chargers rated at the same output behaved differently in a warm room. One held its rating to a stated ambient and then reduced output gradually; the other reduced output earlier, without saying so, and the customer measured the difference. …
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