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USB-C PD Car Charger

by Linocell

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Linocell 45W PD Car Charger Offers 2-in-1 Charging with USB Power Delivery and Qualcomm Quick Charge

The Linocell 45W PD Car Charger supports both USB Power Delivery (PD) and Qualcomm Quick Charge (QC) standards for rapid charging through the DC power outlet of your car. This allows you to quickly charge your USB PD enabled phones and tablets at 15 volts and notebook PC's at 20 volts or your QC enabled phones up to 18W.  

The Linocell 45W PD Car Charger uses 45 watts (20 volts @ 2.25 amps), 45 watts (15 volts @ 3 amps) or 15 watts (5 volts @ 3 amps) power profiles for USB PD 2.0 charging over its Type-C output port as stated on its packaging. The charger claims to also at most supply 18 watts for QC 3.0 charging using 15 watts (5 volts @ 3 amps), 18 watts (9 volts @ 2 amps) and 18 watts (12 volts @ 1.5 amps) power profiles through its Type-A output port. 

It's fastest to charge your USB Power Delivery capable devices like the Apple's 11-inch iPad Pro (2018) and MacBook 12" Retina 2017 or the Dell XPS 13 9370 and the Google Pixelbook using a USB Type-C to Type-C cable or your iPhone X with the Apple USB-C to Lightning Cable. You can also use a USB Type-C to Type-A cable if you want to charge QC based phones like the LG, HTC, ZTE and Motorola phones or any other standard smartphones and tablets.

There is no cable accessory for the Linocell 45W PD Car Charger which means you will need to use your own cable with the charger.  

To observe the power capabilities of the Linocell 45W 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 Linocell 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.

The USB Power Test App reports out all the PDO's supported by the Linocell charger and their OCP thresholds. Note the 9V OCP is missing which is part of USB-IF spec requirements for a power charger. OCP threshold is also very high for the 20V PDO.

PDOOCP
PDO#1 Fixed: 5V 3A3.78
PDO#2 Fixed: 15V 3A4.27
PDO#3 Fixed: 20V 2.25A5.35

The USB Power Test App from Granite River Labs takes this data to produce an I-V curve which graphically shows the relationship between voltage and current for each PDO. We can observe current fold-back behavior as well as voltage instability when the current approaches the OCP trigger point for each PDO. We can see that the current for 20V PDO just drops without reaching the 5.35A OCP threshold.

Using the USB Power Test App and FLIR thermal imaging tools, we measured the heat emitted by the Linocell charger as seen in the following temperature graph for the highest 20V, 2.25A PDO, which recorded max temperature of around 62.3 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 Linocell charger supports the following fixed PDO's as claimed- 15 watts (5 volts @ 3 amps), 45 watts (15 volts @ 3 amps) and 45 watts (20 volts @ 2.25 amps). Note a compliance failure was 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

15000

Src_PDO_Max_Current #2

3000

Src_PDO_Supply_Type #3

Fixed

Src_PDO_Voltage #3

20000

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

PASS

4

TDA.2.1.2.1

TDA.2.1.2.1 BMC PHY RX BUSIDL

PASS

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

PASS

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

FAIL

16

TDA.2.3.1.1

TDA.2.3.1.1 POW SRC LOAD P PC

PASS

17

TDA.2.3.2.1

TDA.2.3.2.1 POW SRC TRANS P PC

PASS

BMC Eye Diagram

Eye Diagram

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