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Diffstat (limited to 'source/hardware/maple-ret6.rst')
| -rw-r--r-- | source/hardware/maple-ret6.rst | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/source/hardware/maple-ret6.rst b/source/hardware/maple-ret6.rst index d5bf049..21c033b 100644 --- a/source/hardware/maple-ret6.rst +++ b/source/hardware/maple-ret6.rst @@ -58,9 +58,20 @@ standard Maple <maple-powering>`. .. warning:: The RET6 Edition silkscreen falsely indicates that the barrel jack accepts up to 18 V. We recommend a barrel jack input - voltage **no greater than 12 V**. + voltage **no greater than 12V**, and potentially even lower + depending upon the current draw requirements of the + application. The same goes for powering off LiPo batteries. - See :ref:`this erratum <maple-barrel-jack>` for more information. + Please see :ref:`Power Regulation on the Maple + <maple-power-regulation>` for more information. + +.. _maple-ret6power-regulation: + +Power Regulation on the Maple RET6 +---------------------------------- + +Power regulation on the Maple RET6 works in the :ref:`same way as the +standard Maple <maple-power-regulation>`. Using the Built-in Battery Charger ---------------------------------- @@ -373,11 +384,17 @@ features only available on the STM32F103RET6. .. _maple-ret6-barrel-jack: -* **Barrel jack power supply voltage mistake**: The silkscreen next to - the barrel jack connector incorrectly indicates that up to an 18 V - input voltage is allowed. **We do not recommend exceeding 12 V**. - - See this :ref:`Maple erratum <maple-barrel-jack>` for more +* **Barrel jack power supply voltage mistake**: The acceptable voltage + range given next to the barrel jack on the Maple RET6 is + **incorrect**. The given range is 7V — 18V. In fact, **18V is too + high** and should not be supplied to your board. The original + voltage regulators used on the Maple were rated up to 18V. However, + the voltage regulators on current Maple Revs are rated up to only + 16V, and due to the current draw requirements of the board, operate + properly only up to 12V. The recommended maximum voltage you should + apply is **12V**, and potentially even lower depending upon the + current draw requirements of the application. Please see :ref:`Power + Regulation on the Maple <maple-power-regulation>` for more information. * **Power supply marketing mistake**: We originally sold the Maple |