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Google 18W PD Charger for Pixel 2

by Google Inc.

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How the USB Power Delivery Profile Looks Like for the Google Pixel 2 XL's 18W USB-C Power Adapter

The 18W USB-C Power Adapter ships with the Google Pixel 2 XL and supports the common USB Power Delivery profiles of 15 watts (5 volts @ 3 amps) and 18 watts (9 volts @ 2 amps). Note this 18W charger is different from the original charger shipped with the original Google Pixel (seen in this review) although still supports the same power profiles.

Using the USB Power Delivery Compliance C2 Tester from Granite River Labs to run just a subset of the full USB Power Delivery compliance test suite, we can verify that the Google 18W USB-C Power Adapter makes use of 15 watts (5 volts @ 3 amps) and 18 watts (9 volts @ 2 amps) PDO's for charging. Note some compliance failures were observed.

GRL

DUT Information

Manufacturer

Google

Model Number

Pixel 2 18W PD AC Charger

Serial Number

Comm

Test Information

Date and Time:

20180224_014822

Controller and Instrument Information

Parameter

Value

GRL USB-PD_C2 Serial No.

035.013.035.032.064.

GRL USB-PD Software Version

1.3.3.8

GRL USB-PD Firmware Version

1.3.3.0.7

Board Calibration

Calibration Success.

App Mode

COMMUNICATION_ENGINE_TESTS

Tx Mask

true

Rx Mask

false

RX mask Power selection

Neutral Power

Device Type

Provider Only

Cable IR drop Imp(R)

0

Product Capabilities

Parameter

GetCapabilities

UUT_Device_Type

 

Vendor_Name

 

Product_Name

 

Version_Info

 

TID

 

Type_C

NONE

SOP_Capable

NONE

SOP_P_Capable

NONE

SOP_PP_Capable

NONE

SOP_P_Debug_Capable

NONE

SOP_PP_Debug_Capable

NONE

Manufacturer_Info_Supported_Port

 

Manufacturer_Info_VID_Port

 

Manufacturer_Info_PID_Port

 

USB_Comms_Capable

NO

DR_Swap_To_DFP_Supported

NO

DR_Swap_To_UFP_Supported

NO

Externally_Powered

YES

VCONN_Swap_To_On_Supported

NONE

VCONN_Swap_To_Off_Supported

NONE

Responds_To_Discov

NONE

Attempts_Discov

NONE

Chunking_Implemented_SOP

NO

Unchunked_Extended_Messages_Supported

NO

Accepts_PR_Swap_As_Src

NO

Accepts_PR_Swap_As_Snk

NO

Requests_PR_Swap_As_Src

NONE

Requests_PR_Swap_As_Snk

NONE

XID

 

Structured_VDM_Version

 

Data_Capable_as_USB_Host

NONE

Data_Capable_as_USB_Device

NONE

Product_Type_UFP_SOP

 

Product_Type_DFP_SOP

 

Modal_Operation_Supported

NONE

Security_Msgs_Supported_SOP

NO

USB_VID

 

PID

 

bcdDevice

 

SVIDs Min

0

SVIDs Max

0

SVID Fixed

NONE

Power Capabilities

Parameter

GetCapabilities

PD_Power_as_Sink

 

No_USB_Suspend_May_Be_Set

NONE

GiveBack_May_Be_Set

NONE

Higher_Capability_Set

NONE

Num_Snk_PDOs

 

Supply Type #1

-

Min Voltage #1

-

Max Voltage #1

-

Supply Type #2

-

Min Voltage #2

-

Max Voltage #2

-

Supply Type #3

-

Min Voltage #3

-

Max Voltage #3

-

Supply Type #4

-

Min Voltage #4

-

Max Voltage #4

-

PD_Power_as_Source

 

Rp Value

 

USB Suspend may be cleared

NO

Send Ping

NONE

No of Source PDOs

 

Supply Type #1

Fixed

Peak Current #1

0x0(A)

Voltage #1

0x64(5V)

Max Current #1

0x12C(3A)

Supply Type #2

Fixed

Peak Current #2

0x0(A)

Voltage #2

0xB4(9V)

Max Current #2

0xC8(2A)

Supply Type #3

-

Min Voltage #3

-

Max Voltage #3

-

Supply Type #4

-

Min Voltage #4

-

Max Voltage #4

-

Supply Type #5

-

Min Voltage #5

-

Max Voltage #5

-

PD_Power_as_Sink

 

No_USB_Suspend_May_Be_Set

NONE

GiveBack_May_Be_Set

NONE

Higher_Capability_Set

NONE

Num_Snk_PDOs

 

Supply Type #1

-

Min Voltage #1

-

Max Voltage #1

-

Supply Type #2

-

Min Voltage #2

-

Max Voltage #2

-

Supply Type #3

-

Min Voltage #3

-

Max Voltage #3

-

Supply Type #4

-

Min Voltage #4

-

Max Voltage #4

-

Result Summary

Sl No

Test ID

Test Name

Test Result

1

TDA.2.1.1.1

BMC-PHY-TX-EYE

PASS

2

TDA.2.1.1.2

BMC-PHY-TX-BIT

PASS

3

TDA.2.1.2.2

BMC-PHY-RX-INT-REJ

PASS

4

TDA.2.1.2.1

BMC-PHY-RX-BUSIDL

FAIL

5

TDA.2.1.3.1

BMC-PHY-TERM

PASS

7

TDA.2.2.1

BMC-PROT-SEQ-GETCAPS

PASS

11

TDA.2.2.7

BMC-PROT-BIST-NOT-5V-SRC

PASS

13

TDA.2.3.1.1

POW-SRC-LOAD-P-PC

PASS

14

TDA.2.3.2.1

POW-SRC-TRANS-P-PC

PASS

15

TDB.2.2.9

BMC-PROT-GSC-REC

FAIL

BMC Eye Diagram


Eye Diagram 

Looking at the load screenshot captured from the GRL-USB-PD C2 Compliance Test Solution App, we can see that the 18W USB-C Power Adapter  supports different voltage and current levels for charging.

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