Tama 32W USB PD Car Charger Offers Fast 27W USB-C Charging with USB Power Delivery For Mobile Devices

The Tama 32W USB PD Car Charger can be used to keep your USB Type-C devices and other peripherals charged up inside your car. The charger supports USB Power Delivery 2.0 technology over its USB Type-C output port for up to 27W to quickly charge recent Apple iPhone's and iPad's that can use USB Power Delivery like the Apple iPhone 11 Pro Max and 11-inch iPad Pro (2018) or Android phones such as the Google Pixel 4 XL and Samsung Galaxy Note10+. The other non USB Power Delivery based USB Type-A port on the charger offers up to 5W power to charge various peripherals.

Through USB Power Delivery over Type-C, the Tama 32W USB PD Car Charger states that it can support charging using common USB Power Delivery profiles of 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps) and 27 watts (12 volts @ 2.25 amps). The charger also advertises the USB-IF logo on its box which means that it has been USB-IF certified.

The Tama 32W USB PD Car Charger comes without any cable accessory which means you will need to carry along your own cable to plug in to the charger.

To observe the power capabilities of the Tama 32W USB PD Car Charger, we used the USB Power Test App from Granite River Labs with the Granite River Labs USB Power Delivery Compliance C2 Tester to generate the following test results.

The USB Power Test App first negotiates a power contract for every PDO supported by the Tama 32W USB PD Car Charger, and increases the load gradually to find the threshold where over current protection (OCP) kicks in and voltage and current start to drop for safety reasons.

OCP Plot for PDO #1 and #3

OCP Plot for PDO #2

The USB Power Test App reports out all the PDO's supported by the Tama charger and their OCP thresholds. OCP thresholds for the charger are set at about 17-20% above the maximum current levels for the PDO's.

PDO	OCP
PDO#1 Fixed: 5V 3A	3.62
PDO#2 Fixed: 9V 3A	3.58
PDO#3 Fixed: 12V 2.25A	2.65

Using the USB Power Test App and FLIR thermal imaging tools, we measured the heat emitted by the Tama charger as seen in the following temperature graph for the highest 12V, 2.25A PDO, which recorded max temperature of around 44 degree Celsius.

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 Tama charger supports the following fixed PDO's as claimed- 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps) and 27 watts (12 volts @ 2.25 amps). Note some compliance failures were also observed for this charger.

Source Capabilities

Parameter	GetCapabilities
Src_PDO_Supply_Type #1	Fixed
Src_PDO_Voltage #1	5000
Src_PDO_Max_Current #1	3000
Src_PDO_Supply_Type #2	Fixed
Src_PDO_Voltage #2	9000
Src_PDO_Max_Current #2	3000
Src_PDO_Supply_Type #3	Fixed
Src_PDO_Voltage #3	12000
Src_PDO_Max_Current #3	2250

PD2 Deterministic Tests- Result Summary

Sl No	Test ID	Test Name	Test Result
1	TD.PD.LL.E1	TD.PD.LL.E1 GoodCrc Timing	PASS
2	TD.PD.LL.E2	TD.PD.LL.E2 Retransmission	PASS
3	TD.PD.LL.E3	TD.PD.LL.E3 Soft Reset Usage	PASS
4	TD.PD.LL.E4	TD.PD.LL.E4 Hard Reset Usage	PASS
5	TD.PD.LL.E5	TD.PD.LL.E5 Soft Reset	PASS
6	TD.PD.SRC.E1	TD.PD.SRC.E1 Source Capabilities sent timely	PASS
7	TD.PD.SRC.E2	TD.PD.SRC.E2 Source Capabilities Fields Checks	PASS
8	TD.PD.SRC.E3	TD.PD.SRC.E3 SourceCapabilityTimer Timeout	PASS
9	TD.PD.SRC.E4	TD.PD.SRC.E4 SenderResponseTimer Deadline Request	PASS
10	TD.PD.SRC.E5	TD.PD.SRC.E5 SenderResponseTimer Timeout Request	PASS
11	TD.PD.SRC.E6	TD.PD.SRC.E6 PSHardResetTimer Timeout	PASS
12	TD.PD.SRC.E7	TD.PD.SRC.E7 Accept sent timely	PASS
13	TD.PD.SRC.E8	TD.PD.SRC.E8 Accept Fields Checks	PASS
14	TD.PD.SRC.E9	TD.PD.SRC.E9 PS RDY sent timely	PASS
15	TD.PD.SRC.E10	TD.PD.SRC.E10 PS RDY Fields Checks	PASS
16	TD.PD.SRC.E11	TD.PD.SRC.E11 Accept Requests can be met	PASS
17	TD.PD.SRC.E12	TD.PD.SRC.E12 Reject Requests cannot be met	PASS
18	TD.PD.SRC.E13	TD.PD.SRC.E13 Reject Request Invalid Object Position	PASS
19	TD.PD.SRC.E14	TD.PD.SRC.E14 Atomic Message Sequence	PASS
20	TD.PD.SRC.E15	TD.PD.SRC.E15 Give Source Cap	PASS
21	TD.PD.SRC.E16	TD.PD.SRC.E16 PDO Transition	PASS
24	TD.PD.VDMD.E3	TD.PD.VDMD.E3 Incorrect Fields Discover Identity	PASS
25	TD.PD.VDMD.E4	TD.PD.VDMD.E4 Applicability	PASS
28	TD.PD.PHY.E1	TD.PD.PHY.E1 BIST Test Data	PASS
31	TD.PD.PHY.E4	TD.PD.PHY.E4 Transmitter Bit Rate and Bit Rate Drift	PASS
32	TD.PD.PHY.E5	TD.PD.PHY.E5 Transmitter Collision Avoidance	PASS
33	TD.PD.PHY.E6	TD.PD.PHY.E6 Receiver Swing Tolerance	PASS
34	TD.PD.PHY.E7	TD.PD.PHY.E7 Receiver Bit Rate Tolerance	PASS
35	TD.PD.PHY.E8	TD.PD.PHY.E8 Receiver Bit Rate Deviation Tolerance	PASS
36	TD.PD.PHY.E9	TD.PD.PHY.E9 Valid SOP Framing	PASS
37	TD.PD.PHY.E10	TD.PD.PHY.E10 Invalid SOP Framing	PASS
38	TD.PD.PHY.E11	TD.PD.PHY.E11 Valid SOP P Framing	PASS
39	TD.PD.PHY.E12	TD.PD.PHY.E12 Invalid SOP P Framing	PASS
40	TD.PD.PHY.E13	TD.PD.PHY.E13 Valid SOP PP Framing	PASS
41	TD.PD.PHY.E14	TD.PD.PHY.E14 Invalid SOP PP Framing	PASS
42	TD.PD.PHY.E15	TD.PD.PHY.E15 SOP P_Debug SOP PP Debug Framing	PASS
43	TD.PD.PHY.E16	TD.PD.PHY.E16 Valid Hard Reset Framing	PASS
44	TD.PD.PHY.E17	TD.PD.PHY.E17 Invalid Hard Reset Framing	PASS
45	TD.PD.PHY.E18	TD.PD.PHY.E18 Valid Cable Reset Framing	PASS
46	TD.PD.PHY.E19	TD.PD.PHY.E19 Invalid Cable Reset Framing	PASS
47	TD.PD.PHY.E20	TD.PD.PHY.E20 EOP Framing	PASS
48	TD.PD.PHY.E21	TD.PD.PHY.E21 Preamble	PASS

PD2 Communication Engine Tests- Result Summary

Sl No	Test ID	Test Name	Test Result
1	TDA.2.1.1.1	TDA.2.1.1.1 BMC PHY TX EYE	PASS
2	TDA.2.1.1.2	TDA.2.1.1.2 BMC PHY TX BIT	PASS
3	TDA.2.1.2.2	TDA.2.1.2.2 BMC PHY RX INT REJ	FAIL
4	TDA.2.1.2.1	TDA.2.1.2.1 BMC PHY RX BUSIDL	FAIL
5	TDA.2.1.3.1	TDA.2.1.3.1 BMC PHY TERM	PASS
6	TDA.2.1.3.2	TDA.2.1.3.2 BMC PHY MSG	PASS
7	TDA.2.2.1	TDA.2.2.1 BMC PROT SEQ GETCAPS	PASS
8	TDA.2.2.2.1	TDA.2.2.2.1 BMC PROT SEQ CHKCAB P PC	FAIL
13	TDA.2.2.7	TDA.2.2.7 BMC PROT BIST NOT 5V SRC	PASS
15	TDA.2.2.9	TDA.2.2.9 BMC PROT GSC REC	PASS
16	TDA.2.3.1.1	TDA.2.3.1.1 POW SRC LOAD P PC	PASS

BMC Eye Diagram​