The Hama 27W QC4+ AC Charger Can Be Used to Rapidly Charge Your Latest Samsung or Xiaomi Phone

The Hama 27W QC4+ AC Charger supports Qualcomm Quick Charge 4+ (QC4+) technology for rapid charging up to 27W over USB Type-C. Through QC4+, the Hama charger can use USB Power Delivery 3.0 based PPS (Programmable Power Supply) and Augmented PDO's to quickly charge Qualcomm Snapdragon based phones that support PPS and can take advantage of the technology to optimize charging speed, performance and temperature like the Samsung Galaxy Note10+ and Galaxy S10 5G, Xiaomi Mi 9 Pro, and LG V30. 

Qualcomm Quick Charge 4+ technology also addresses compatibility with other phones that support non-PPS Power Delivery like the Apple iPhone 11 Pro Max or Android phones such as the Google Pixel 4 XL and Samsung Galaxy S10+. To maximize compatibility, the Hama 27W QC4+ AC Charger also supports phones using Qualcomm Quick Charge instead of USB Power Delivery like the LG, HTC, ZTE and Motorola phones. 

Here we take a closer look at the Hama 27W QC4+ AC Charger which displays the QC4+ logo on its packaging to indicate that the charger has been Qualcomm Quick Charge 4+ certified.

You won't get any cable accessory inside the packaging of the Hama 27W QC4+ AC Charger.

The Hama 27W QC4+ AC Charger allows max 27 watts output through USB Power Delivery using fixed PDO's (Power Delivery Objects) of 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps) and 27 watts (12 volts @ 2.25 amps) as well as variable power of 9.9-17.7 watts (3.3~5.9 volts @ 3 amps) and 9.9-33 watts (3.3~11 volts @ 3 amps) power profiles. 

By supporting 27 watts, the charger can provide fairly decent charging to even tablets and smaller notebook computers like Apple's 11-inch iPad Pro (2018) and  MacBook (Early 2016).

In case you are looking for a similar charger to be used in your car, you may want to consider the Hama 27W QC4+ Car Charger, also supporting 27W based QC4+ technology.

To observe the power capabilities of the Hama 27W QC4+ AC 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 Hama 27W QC4+ AC 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 Hama charger and their OCP thresholds. OCP thresholds for the charger are set at about 15-16% above the maximum current levels for the PDO's.

PDO	OCP
PDO#1 Fixed: 5V 3A	3.48
PDO#2 Fixed: 9V 3A	3.48
PDO#3 PPS: (3.3~5.9)V 3A	3.46
PDO#4 PPS: (3.3~11)V 3A	3.48

The USB Power Test App takes this data to produce an I-V curve which graphically shows the relationship between voltage and current for each PDO.  Interestingly, unlike other chargers that support PPS (Programmable Power Supply), no current fold-back behavior is observed for all the PDO's. We can see the voltage immediately shuts off once the current crosses the OCP threshold rather than curving down.  

The USB Power Test App can also use the Granite River Labs USB Power Delivery Compliance C2 Tester integrated with the GW Instek APS-7100 programmable AC power supply to compare the charger's power output vs power input so that power efficiency can be measured and compared to regulatory limits from United States of Energy (DOE) Level VI or European Union's CoC Tier 2 requirements. We can repeat the power efficiency tests for different PDO's, current load conditions, and different AC input ranges, allowing us to get a complete picture of power efficiency ranges across all different usage scenarios.

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, some compliance failures were observed for the Hama 27W QC4+ AC Charger.

Power Delivery 3.0 Tests - Test Result Summary

Sl No	Test ID	Test Name	Test Result
1	TD.PD.LL3.E1	TD.PD.LL3.E1 GoodCRC Specification Revision compatibility	PASS
2	TD.PD.LL3.E2	TD.PD.LL3.E2 Retransmission	FAIL
3	TD.PD.LL3.E3	TD.PD.LL3.E3 GoodCRC Compatibility with PD2	PASS
4	TD.PD.SRC3.E1	TD.PD.SRC3.E1 Source Capability Fields Checks	PASS
5	TD.PD.SRC3.E2	TD.PD.SRC3.E2 Accept Fields Checks	PASS
6	TD.PD.SRC3.E3	TD.PD.SRC3.E3 PSRDY Fields Checks	PASS
7	TD.PD.SRC3.E4	TD.PD.SRC3.E4 Specification Revision Check after Contract	PASS
8	TD.PD.SRC3.E5	TD.PD.SRC3.E5 Source Capabilities Extended sent timely	PASS
9	TD.PD.SRC3.E6	TD.PD.SRC3.E6 Source Capabilities Extended Fields Checks	PASS
10	TD.PD.SRC3.E7	TD.PD.SRC3.E7 Battery Status sent Timely	PASS
11	TD.PD.SRC3.E8	TD.PD.SRC3.E8 Battery Status Fields Checks	PASS
12	TD.PD.SRC3.E9	TD.PD.SRC3.E9 Battery Status Fields Checks Invalid Battery reference	PASS
13	TD.PD.SRC3.E10	TD.PD.SRC3.E10 Unrecognized Message Received in Ready State	PASS
14	TD.PD.SRC3.E11	TD.PD.SRC3.E11 Get Status Fields Checks	PASS
15	TD.PD.SRC3.E12	TD.PD.SRC3.E12 Get Battery Status Fields Checks	PASS
16	TD.PD.SRC3.E13	TD.PD.SRC3.E13 Status sent timely	PASS
17	TD.PD.SRC3.E14	TD.PD.SRC3.E14 Status Fields Checks	PASS
18	TD.PD.SRC3.E15	TD.PD.SRC3.E15 Battery Capabilities sent timely	PASS
19	TD.PD.SRC3.E16	TD.PD.SRC3.E16 Battery Capabilities Fields Checks	PASS
20	TD.PD.SRC3.E17	TD.PD.SRC3.E17 Battery Capabilities Fields Checks Invalid Battery Reference	PASS
21	TD.PD.SRC3.E18	TD.PD.SRC3.E18 Manufacturer Info Sent Timely	PASS
22	TD.PD.SRC3.E19	TD.PD.SRC3.E19 Manufacturer Info Fields Checks	PASS
23	TD.PD.SRC3.E20	TD.PD.SRC3.E20 Manufacturer Info Fields Checks Invalid Manufacturer Info Target	PASS
24	TD.PD.SRC3.E21	TD.PD.SRC3.E21 Manufacturer Info Fields Checks Invalid Manufacturer Info Ref	PASS
25	TD.PD.SRC3.E22	TD.PD.SRC3.E22 Cable Type Detection	PASS
26	TD.PD.SRC3.E23	TD.PD.SRC3.E23 Vconn Swap	PASS
27	TD.PD.SRC3.E24	TD.PD.SRC3.E24 Unexpected Message Received in Ready State	PASS
28	TD.PD.SRC3.E25	TD.PD.SRC3.E25 Receiving chunked extended message	PASS
29	TD.PD.SRC3.E26	TD.PD.SRC3.E26 Soft Reset sent regardless of Rp value	PASS
30	TD.PD.SRC3.E27	TD.PD.SRC3.E27 PPS Status Sent Timely	PASS
32	TD.PD.SRC3.E29	TD.PD.SRC3.E29 SourcePPSCommTimer Deadline	PASS
33	TD.PD.SRC3.E30	TD.PD.SRC3.E30 SourcePPSCommTimer Timeout	PASS
34	TD.PD.SRC3.E31	TD.PD.SRC3.E31 SourcePPSCommTimer Stopped	PASS
35	TD.PD.SRC3.E32	TD.PD.SRC3.E32 ChunkSenderResponseTimer Timeout	PASS
36	TD.PD.SRC3.E33	TD.PD.SRC3.E33 Country Codes Sent Timely	PASS
37	TD.PD.SRC3.E34	TD.PD.SRC3.E34 Country Codes Fields Checks	PASS
38	TD.PD.SRC3.E35	TD.PD.SRC3.E35 Country Info Sent Timely	PASS
39	TD.PD.SRC3.E36	TD.PD.SRC3.E36 Country Info Fields Checks	FAIL
40	TD.PD.VDM3.E1	TD.PD.VDM3.E1 Fields Checks Discover Identity	PASS

PD2 Deterministic Tests - Test 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	FAIL
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	FAIL
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	FAIL
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 - Test 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	FAIL
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
9	TDA.2.2.2.2	TDA.2.2.2.2 BMC PROT SEQ CHKCAP NOMARK 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	PASS
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