LAVA Computer MFG Inc.
nSynC-Staging Reference Manual - Rev A05
2 Vulcan St. Toronto, ON
Tel: +1 416 674-5942
www.lavalink.com
Canada, M9W 1L2
Toll Free (US & Canada): 800 241-5282
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Mobile Device Charging with USB Host Operation (SimulCharge)
Overview
Mobile devices were intended to be standalone devices. When the mobile device battery requires
charging, it is plugged into a Wall/USB Charger to restore the battery charge. The mobile device
can continue being used while it is charging. Once the battery is charged, the mobile device may
use the charger as a supplementary power source if the mobile device is left running. It is
preferable to charge a mobile device with the unit off and remove the supply once a full charge
has been reached for the longest battery life.
When using a Wall/USB Charger provided by the mobile device’s manufacturer, it can often
charge at a high rate that is mobile device specific. The charge rate is also limited to the power
available from the attached charger. Samsung Wall/USB Chargers, for example, come in several
power ratings, each matched to the original mobile device requirements.
Note: While any standard USB-C wall charger can be used. It will need to be 45 watts or higher
to be able to take advantage of SimulCharge mode on the adapter.
USB Host versus Accessory
A mobile device plugged into a desktop (or laptop) PC is treated as a USB Accessory (also
referred to as a USB Target). The PC operates as a USB Host Controller when the mobile device
is attached. The PC provides power to the mobile device, but the mobile device battery is being
charged at a low rate. In some cases, the battery may not charge.
To plug a USB Accessory into a mobile device, the mobile device must operate as a USB Host
Controller rather than a USB Accessory. The USB Standard has the OTG feature, in which the
mobile device detects that a USB Accessory has been plugged in and automatically switches to
operate as a USB Host Controller. Not all mobile devices support the USB OTG feature. When
operating as an OTG USB Host, the mobile devices will be running off of battery power.
Generally, the mobile device is also expected to supply power to the attached accessories in this
mode. However, the nSynC-Staging remains powered by the external power source in OTG
mode so as to not further drain the connected mobile devices’ batteries.
