A Quick Look at the Belkin 36W USB-C Car Charger's USB Power Delivery Behavior

The Belkin 36W USB-C Car Charger sold in the Apple Store and directly from Belkin uses USB Power Delivery to support 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), and 36 watts (12 volts @ 3 amps). 

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 confirm that the Belkin 36W USB-C Car Charger does support 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), and 36 watts (12 volts @ 3 amps) PDO's for charging as claimed.

DUT Information

Manufacturer	Belkin
Model Number	36W Car Charger Apple Store
Serial Number	Comm

Test Information

Date and Time:

20180224_022902

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	0x12C(3A)
Supply Type #3	Fixed
Peak Current #3	0x0(A)
Voltage #3	0xF0(12V)
Max Current #3	0x12C(3A)
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
3	TDA.2.1.2.2	BMC-PHY-RX-INT-REJ	PASS
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	PASS

Using the GRL-USB-PD C2 Compliance Test Solution App to capture a load screenshot, we can also observe various voltage and current charging levels by the Belkin 36W USB-C Car Charger.