Power budget of ODROID-W

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Power budget of ODROID-W

Unread postby odroid » Mon Sep 15, 2014 8:36 pm

PMIC has the over-current protection and it limits the total power budget.
If the current is higher than the limitation, Odroid-W stops working or rebooting. (very unstable)

1. Power supply via Micro-USB port.
Total input current is limited to 600~700mA.
It is shared by system and battery charging.

2. Power supply via ADAPTER INPUT pin or DC-Jack on the Docking board.
Total input current is limited to 1200~1300mA.
It is shared by system and battery charging.

We will do further analysis within 2 days and update the result.
Some normal usage cases are considered in our test conditions.
- Video playback a 1080p contents with XBMC via Ethernet streaming.
- Emulation gaming with TFT LCD + WiFi + USB Keyboard + USB Mouse.
- Some other heavy load test and light load test.
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Re: Power budget of ODROID-W

Unread postby odroid » Thu Sep 18, 2014 8:50 pm

Updated our test report of power issue with the heavy load.

User case #1
What attached to ODROID-W.
USB Keyboard, USB Mouse, Pi-Camera, HDMI monitor
Total power current is about 500mA at 5V input. But peak rush current could go over 900mA for very short period.
In this case, you must connect the power source to the Adapter Pin.
Micro-USB power path is not enough and system could reboot or hang.

User case #2 (Seems to be worst case)
What attached to ODROID-W.
USB Keyboard, USB Mouse, Pi-Camera, HDMI monitor, Wifi (4Mbps continuous downloading) + TFT_LCD + Camera
Total power current is about 650~720mA at 5V input.
In this case, you must connect the power source to the Adapter Pin.
Micro-USB power path is not enough and system could reboot or hang.


* Please also check your Power supply voltage if your system is not stable.
It must be 4.9V ~ 5.3V.

If you have only micro-USB type power supply, you can connect the Adapter Input pin to Micro-USB power input point like this picture.
W_1.jpg
W_1.jpg (171.46 KiB) Viewed 9822 times


Closer look.
W_2.jpg
W_2.jpg (160.41 KiB) Viewed 9822 times
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