The scene that did Charge using USB mainly on digital product equipped with battery including smartphone and game apparatus spread in our surroundings.
Charge using USB was limited to small devices such as smartphone until now.
However, we add to conventional Charge standard, and "it is higher-speed, and it is more possible for new Charge standard corresponding to the high output", and devices corresponding to that increase, too.
By new Charge standard, note PC and tablet which we were not able to charge came to be able to be charged from USB until now.
| Standard name |   Power Delivery(PD) |
  Quick Charge(QC) |
Conventional standard Type-C current @3.0A USB 3.0 USB 2.0 USB BC1.2 |
|---|---|---|---|
| Explanation | The latest Charge standard that Charge of up to 100w which USB-IF devised is available for. We are transcribed into USB PD. Smartphone, tablet, note PC support. | Fast charging standard that Charge of up to 18w which Qualcomm Corporation developed is available for. Smartphone of the Android deployment supports. | Up to 15w |
| The battery charger side |   In USB Type-CCorrespondence |
  In USB Type-ACorrespondence |
  USB Type-A,It supports Type-C |
| The device side |   USB Type-CIt supports, Lightning |
  USB Type-C,It supports micro B |
  USB Type-C,micro B, It supports Lightning |
Charge to apparatus equipped with battery is similar to accumulating water to glass with syringe as image.
Charge to apparatus equipped with battery is similar to accumulating water to glass with syringe as image.
- ・Syringe is battery charger
- ・Water is electricity
- ・Glass is apparatus equipped with battery.
How long you can accumulate water to glass early that is it is point whether it can supply electricity.
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It is power that is going to carry away power = electricity pushing syringe.
Unit expresses in voltages (V). -
It is quantity of flow = flowing electricity of water pushed out of syringe.
Unit expresses in amperes (A). -
It is electric quantity to be supplied to quantity = battery of water which collected to glass.
Unit expresses in watts (W).
Charge performance expresses in units of watt (W).
Watt (W) can demand thickness = electric current (A) and syringe of needle of syringe by multiplication of outthrust = Voltage (V).
Charge performance (W) = electric current (A) X Voltage (V)
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Charge method of conventional standard
Conventionally, in standard, we were doing stitch of syringe thickly to accumulate water to glass early. In other words, it increased electric quantity = electric currents which by making exit big, flowed, and electricity collected early.
We can apply electric current of 2.4 times with battery charger of 1A and battery charger of 2.4A, and Charge speed becomes early only by just that much, too.
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Charge method of new standard
Outthrust became able to make water strong at the same time to do needle of syringe in new high speed Charge standard thickly to save water to glass earlier.
In other words, we make exit big (electric current) and by pushing by stronger power (Voltage), hasten Charge speed.
In late years Charge standard of USB that supporting device increases to is USB PowerDelivery (power delivery as follows "USB PD"). We can use USB PD with "apparatus corresponding to USB PD with connector of USB Type-C or Lightning connector".
iPhone XS, iPhone XR, XPERIA XZ3, Galaxy Note9, most of latest models of smartphone including Pixcel3 support USB PD.
USB PD supports the output which is more expensive than standard conventionally of up to 100W and begins to be adopted in not only smartphone but also note PC or tablet.
As USB PD is high output of up to 100W, we will have power of 20 times in comparison with Charge apparatus of the 5W (5V/1A) output attached to iPhone and iPad.
Speed of Charge being quick in the output feeding being big by just that much.
For example, in PD18W of ELECOM, quantity of Charge as of 30 minutes is about 2.3 times of Contents!
It is Features that there is difference by start-up. USB PD is very powerful standard.
| Terminal | AC battery charger | At 30 minutes Quantity of Charge |
Charge completion time |
|---|---|---|---|
| Xs | Of the body Contents (1A) |
22% | 3:00 |
| Of ELECOM PD18W product |
52% | 2:05 | |
| XS MAX | Of the body Contents (1A) |
17% | 3:30 |
| Of ELECOM PD18W product |
54% | 1:50 | |
| XR | Of the body Contents (1A) |
19% | 3:10 |
| Of ELECOM PD18W product |
54% | 1:45 |
※It depends on our measurement in August, 2019
| Terminal | AC battery charger | At 30 minutes Quantity of Charge |
Charge completion time |
|---|---|---|---|
| ipad air (2019) |
Of the body Contents (1A) |
22% | 3:00 |
| Of ELECOM PD30W product |
52% | 2:05 | |
| ipad pro (12.9 inches) |
Of the body Contents (1A) |
17% | 3:30 |
| Of ELECOM PD45W product |
54% | 1:50 |
※It depends on our measurement in August, 2019
Device communicates with the battery charger side in USB PD and, in the range of to maximum output on the battery charger side, chooses Voltage, electric current, the output which are most suitable for device automatically.
Battery charger with "maximum output" output which is most suitable for each device or more is necessary.
Indication of the number of each device W
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About 18W
Smartphone such as iPhone
-
About 30W
Mobile notebook PC including tablet, MacBook and Let' s Note such as iPad Pro
-
About 45W
General notebook PC including MacBook Pro 13inch and ThinkPad
-
About 65-100W
Heiss peck notebook PC including MacBook Pro 15inch
When we charge plural devices at the same time, the number of total W of all devices is necessary.
We can perform data communication let alone power supply with one USB Type-C cable at the same time, too. It is simple and can do wiring because we can charge note PC while projecting Video when we connect outside display to note PC with USB Type-C cable.
Quick Charge is high-speed Charge standard that American Qualcom (Qualcomm) company adopted mainly on smartphone of the Android deployment develops and provides. Corresponding to "there is USB Type-C or Micro B female connector Quick Charge can use with apparatus".
Some versions are in Quick Charge and realize up to 27% of Charge speed in comparison with QuickCharge2.0 with it is QuickCharge3.0 used most widely. Because there is lower compatibility with 2.0, QuickCharge3.0 can use product for QuickCharge3.0 for product for 2.0.
In QuickCharge3.0, technique called "Intelligent Negotiation for Optimum Voltage (INOV)" is adopted. This automatically adjusts both Voltage and electric current in the most suitable level depending on device to perform hi-charging most efficiently.
Selection of battery charger for QuickCharge3.0
To product corresponding to Quick Charge,
"Quick Charge certification logo" is listed.
In addition, let's pay our attention to indication of maximum output. It is higher-speed, and Charge is possible so that Voltage (V), number of electric current (A) are big.
USB is adopted as standard to connect peripheral device to PC from the 1990s. It was main role at first to make data movement between peripheral device and PC such as mouse or keyboard. As it is the same connector, and feeding was possible, as Specifications of USB, we come to gradually carry role of Charge. USB 2.0 is announced in 2000, and USB3.0 is announced in 2008. Opportunities of Charge using USB increased, and, in USB3.0, quantities of biggest data transmission increased, and ability for feeding was raised to 900mA from 500mA (millimeters ampere), too. Furthermore, USBBC1.2 which raised ability for feeding becomes able to feed to up to 1,500mA. [email protected] (3,000mA) is added with TypeC terminal added by USB3.1.
