Thank you, Justin.

I can understand a bit of variance on the input current with Switching power supplies. I am pleased with having a approximate current number. It helps my current thinking and the rating I need for a USB3 Hub.

It also makes certain that using a PC USB3 port will most likely NOT have enough current, so the second connector on the cable has to be plugged in as well to make up the difference, otherwise one should expect flaky performance….

Regards, Jim

[Jim_Pennell]

I noticed, in the prior post, that a user measured the BB60C as pulling approximately 1.3 Amps.

By adding a USB3 at 900 mA and a USB2 500 mA, total current that is available is a rated 1.4 Amps.

USB3 ports may, and often do, supply more then the rated 900 mA but this is ‘iffy’ depending on the particular hardware like the USB3 Hubs that Andrew mentioned.

I have a application where I intend to use a relay to switch power to the BB60C on and off. I will also be switching power to a different USB device. Turns out, the BB60C driver and the one for the other device terminally confuse each other if both devices are plugged into the same PC.

I am using a switchable USB3 hub, but hacking in to install my relays to allow a PC to turn each one on and off so that only ONE of them is running at any given time.

However, I would like to confirm if the BB60C does pull 1.3 Amps.

Fortunately, the USB3 Hub I plan to use has a good external 5 VDC supply and can easily source the current I might need.

I checked the Data sheets, and the BB60C only specifies needing one USB3 and one USB2 but does not indicate a real number for the BB60C.

Andrew, do you have any information to confirm the BB60C current demand ?

Regards, Jim Pennell

• This reply was modified 3 years, 9 months ago by Jim_Pennell. Reason: minor spelling error

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