Power Up to 75W Charging Speeds While Driving with GearMo’s 75W USB C Power Delivery (PD) Car Charger

The 75W USB C Power Delivery (PD) Car Charger by US based GearMo is one of the few car chargers out there that supports both USB Power Delivery 2.0 and Qualcomm Quick Charge 3.0 technologies.

The dual USB output ports on the GearMo 75W USB C Power Delivery (PD) Car Charger combined to provide a total 75W power output. The USB Type-C port is advertised on the box to deliver 60W based fast charging using USB Power Delivery. The other USB Type-A port supports Qualcomm Quick Charge to output up to 15W.  

The back of the box clearly states the power profiles supported on each USB output port. For some reason, the Qualcomm Quick Charge based USB Type-A port is advertised here to output up to 19.5W (6.5 volts @ 3 amps) instead of 15W stated on the GearMo car charger website. The listed power profiles of 3.6-6.5 volts @ 3 amps, 6.5-9 volts @ 2 amps, and 9-12 volts @ 1.5 amps don’t actually match the ones shown in the website either.

Fortunately, the power profiles of the USB Power Delivery enabled USB Type-C port is not as confusing with 5 volts @ 3 amps, 9 volts @ 3 amps, 12 volts @ 3 amps, 15 volts @ 3 amps, and 20 volts @ 3 amps.

The GearMo 75W USB C Power Delivery (PD) Car Charger doesn’t come with a USB Type-C or Type-A cable which would have been very useful. This means you'll need to carry along your own cable to plug in to the charger.

The car charger is small enough to fit into a 12-24V cigarette/DC charge port in your car for charging.

Other than its packaging, the charger also has the same power profiles listed on its back.

GearMo has claimed support for charging both USB Type-C and A devices including laptop PC’s, tablets, phones, and even the Nintendo Switch. Note for devices that have USB Type-C but don't support USB Power Delivery or Qualcomm Quick Charge for faster charging such as the Huawei P9 phone, you should just expect longer charging times associated with legacy USB interfaces.

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 the following PDO's of: 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), 36 watts (12 volts @ 3 amps), 45 watts (15 volts @ 3 amps), and 60 watts (20 volts @ 3 amps) are supported by the GearMo 75W USB C Power Delivery (PD) Car Charger for charging. Note some compliance failures were observed.

DUT Information

Manufacturer	Gearmo
Model Number	75W combined car charger
Serial Number	Comm

Test Information

Date and Time:

20180224_040244

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	Cypress Semiconductor
Product_Name
Version_Info
TID	0x0
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	YES
DR_Swap_To_UFP_Supported	YES
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	V1.0
Data_Capable_as_USB_Host	NO
Data_Capable_as_USB_Device	NO
Product_Type_UFP_SOP
Product_Type_DFP_SOP	Undefined
Modal_Operation_Supported	YES
Security_Msgs_Supported_SOP	NO
USB_VID	0x4B4
PID	0xF603
bcdDevice	0x0
SVIDs Min	1
SVIDs Max	1
SVID Fixed	-
SVID1SOP	4B4
SVID1Modes Min	1
SVID1Modes Max	1
SVID1Modes Fixed	-
SVID1Mode1 Enter Mode	NO
SVID2SOP	4B4
SVID2Modes Min	1
SVID2Modes Max	1
SVID2Modes Fixed	-
SVID2Mode1 Enter Mode	NO

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	Fixed
Peak Current #4	0x0(A)
Voltage #4	0x12C(15V)
Max Current #4	0x12C(3A)
Supply Type #5	Fixed
Peak Current #5	0x0(A)
Voltage #5	0x190(20V)
Max Current #5	0x12C(3A)
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	FAIL
2	TDA.2.1.1.2	BMC-PHY-TX-BIT	PASS
3	TDA.2.1.2.2	BMC-PHY-RX-INT-REJ	FAIL
4	TDA.2.1.2.1	BMC-PHY-RX-BUSIDL	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	FAIL
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

Below is a load screenshot that we captured from the GRL-USB-PD C2 Compliance Test Solution App that shows the GearMo 75W USB C Power Delivery (PD) Car Charger supporting different voltage and current levels for charging.