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| author | Brian J. Nemec <bnemec@chromium.org> | 2021-02-22 14:21:13 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-02-26 01:26:07 +0000 |
| commit | 118fa0ff5a6361066b213522798697ab399c1e84 (patch) | |
| tree | 0f9bf85426a3800ce3f61e34a815a515eecac4a3 | |
| parent | ca44de93729a727a6bb9fbd3ef93441cfc6b4ac6 (diff) | |
| download | chrome-ec-118fa0ff5a6361066b213522798697ab399c1e84.tar.gz | |
servo_v4p1: Enable 5A and 20V charging
Enables 5A and 20V charging on all Servo_v4p1's.
There is a small population of servo_v4p1 devices with 3A cables
but these represent about 100 total units between the early
builds. The setting was not set as a board id configuration
as stress tests show this process will still be safe and the
Servo_v4p1's that are current limited are easy to keep within
the 3A current limits. The 5A cables are visually distinctive
and most chargers and DUTs are limited to 3A.
BUG=b:176110980
BRANCH=servo
TEST=Validated the Servo_v4p1 can deliver power at 4.5A and 20V
using a 90W charger and a resistive load. Verified current
using meters and verified Servo_v4p1 does not heat excessively
significantly after over 2 hours at the cable or PCB.
TEST=Repeated the same test on older Servo_v4p1 devices with the
smaller shunt resistors and 3A compliant cable and verified
components remain at reasonable temperatures.
Signed-off-by: Brian Nemec <bnemec@chromium.org>
Change-Id: If9e67081fe4441ca0fe1039c3189e0673eb8f13a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2714031
Reviewed-by: Jan Dąbroś <jsd@semihalf.com>
Reviewed-by: Matthew Blecker <matthewb@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | board/servo_v4p1/board.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/board/servo_v4p1/board.h b/board/servo_v4p1/board.h index 273014f15b..a43ccbf9f6 100644 --- a/board/servo_v4p1/board.h +++ b/board/servo_v4p1/board.h @@ -235,8 +235,8 @@ /* Define typical operating power and max power */ #define PD_OPERATING_POWER_MW 15000 -#define PD_MAX_POWER_MW 60000 -#define PD_MAX_CURRENT_MA 3000 +#define PD_MAX_POWER_MW 100000 +#define PD_MAX_CURRENT_MA 5000 #define PD_MAX_VOLTAGE_MV 20000 /* Add the raw option to the i2c_xfer command */ |