The Pi Power now comes with a polyfuse on the output. This is intended to work with a TVS diode on the Raspberry Pi to protect it if the switching MOSFET fails. See the documentation for details.
Pi Power is the power supply that the Raspberry Pi should have come with!
Pi Power is a switching power supply for the Raspberry Pi. It plugs into the GPIO header, and has an extra tall stacking header to keep the board out of the way of the display connector and facilitate plugging something else into the GPIO connector as well.
It has a 2.1mm barrel connector that will accept 6-14 VDC. It supplies up to 2 amps of 5 volts. At supply voltages over 9 volts, it has a ripple of 25 mV P-P. At lower supply voltages, the ripple goes up to 45 mV.
At 12 volts, a Raspberry Pi with a WiFi module, camera and a keyboard will consume around 250-300 mA. A 10 watt 9 volt power supply is the ideal power source, but really any 10 watt source will do.
Pi Power comes with a 26 pin stacking header. With it, you can use Pi Power with any Raspberry Pi. B+ owners can use Pi Power as an adapter for 26 pin IDC cables that otherwise won't fit properly on the 40 pin GPIO header. If you are using a B+ and want the full 40 pins, you can add a 14 pin stacking header next to Pi Power.
The SMT µUSB power jack is a terribly inconvenient way to power your Pi. It requires a well regulated source of high current, very low voltage (5v) power. The SMT mounted jack is (relatively) delicate, and most USB power supplies are of questionable quality.
The GPIO connector, relative to the size of the board, is a much, much stronger connection. The 2.1mm barrel connector is a much less fiddly connector.
There are other power supplies out there for the R-Pi. But I think this one is the best. The R-Pi will fit in the bottom half of most cases with it connected. You can mount it externally and connect it with a GPIO cable if you prefer. It supplies more than enough power for both the R-Pi and any reasonable collection of peripherals you might choose to connect. For model B Pis, this includes possibly using high (up to 500 mA) current USB devices without an external powered hub.
It's small, powerful, accepts a wide range of input voltages.
Pi Power comes as a board with all surface mount components installed, and a stacking header for the GPIO connector for you to solder yourself.
If it's not on this list, it's unknown whether Pi Power will work. Ask us and we'll figure it out and add it here.
Bryan | Jan. 24, 2018
Robert | June 27, 2017
Robert | June 23, 2017
Aaron | Sept. 20, 2016
Roy | Sept. 5, 2015
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