Fast charging common detailed explanation
Fast charging common detailed explanation
(Term Explanation) The world of smartphone charging is rapidly evolving and filled with new terms, so here is a brief explanation.
- Fast charging: An abbreviation for quick charging. Additionally, it is referred to as rapid charging or high-speed charging by docomo, but since the abbreviation does not fit well, we will standardize it as fast charging here. Explanation of fast charging operation: Built-in QC/PD compatible IC charger → QC/PD cable with an additional signal line → When charging a smartphone: - When the smartphone is QC/PD compatible, the charging voltage progresses as follows: DC 12V 1.5A → 9V 2A → 5V 3A. As charging progresses, the IC control changes the charging voltage from 12V to 5V, protecting the smartphone while charging in about one hour. - When the smartphone is not QC/PD compatible, charging is possible only at 5V. Moreover, since the charger/cable is designed for high current, it can charge faster than the standard 1A charger/cable usually provided with smartphones. Note: Caution against overheating on the smartphone side!
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basic information
- USB Type-C: A new generation USB standard that is not compatible with standard USB (Type A) / It has a fast charging signal C-C line, and fast charging control is possible with built-in ICs that support PD/QC / Type-C cable is required. - QC 3.0: Quick Charge version 3.0 / Fast charging control standard for Android / QC cable is required. - PD 3.0: USB Power Delivery version 3.0 / Fast charging control standard for iPhone 8 and later / PD cable is required. - Configuration of Android QC cable: QC compatible USB charger (Type-C port / Type-A port) ⇒ Type-C / Type-A terminal - QC wire with one signal line - Micro USB male terminal / Type-C male terminal ⇒ (QC compatible smartphone). - Configuration of iPhone PD cable: PD compatible Type-C charger ⇒ Type-C terminal - PD wire with one signal line - Lightning male terminal ⇒ (PD compatible iPhone 8 and later).
Price information
- Wire gauge of electrical cables - allowable current value a The current flowing through electrical cables is determined by the thickness of the copper wire. For reference, the relationship between AWG gauge # - cross-sectional area SQ mm² - allowable current value a/m is as follows: Reference) Copper wire allowable current value data: AWG gauge # - cross-sectional area SQ mm² - allowable current value a/m: 16# - 1.32 - 13a, 18# - 0.81 - 9a, 20# - 0.52 - 7a, 22# - 0.32 - 5.6a, 24# - 0.21 - 4.3a, 26# - 0.13 - 3.2a, 28# - 0.08 - 2.4a
Price range
P1
Delivery Time
P4
Applications/Examples of results
- Copper wire cross-sectional area: Conductor thickness symbol 1. American (AWG): Using the American Wire Gauge standard, which is based on inches. 2. Japanese and European (SQ): Using square millimeters, with the unit being mm². People in the electrical field often refer to SQ as "square" or "sq" in abbreviation (e.g., copper wire cross-sectional area of 1 mm² = 1 sq). - Allowable current value a/m The electrical resistance value changes depending on the material of the conductor (copper wire), which also affects the allowable current value. The reference allowable current value is the maximum current value a/m for a pure copper conductor (pure copper wire) with a length of 1 m. If the conductor is not pure copper, but instead tinned copper or aluminum, the allowable current value decreases.
Detailed information
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Various terminals from the left: USB terminal, Lightning terminal, Micro USB terminal, Type C terminal.
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QC/PD type C line with C-C signal line
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iPhone PD cable
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Type C-C line
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Type C-C line
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Android charging data 2A cable
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Android charging data A-C cable
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Android charging data A-C cable
Company information
アソシエイト トレーディング 土屋 裕 v09018951120 qq3508274141 ttt@zd.wakwak.com
Associate Trading Co., Ltd. will produce products based on the following policies: 1. As a trading company, we generally do not hold product inventory. 2. The transaction conditions are: advanced payment and, depending on the item, a lead time of approximately 40 days for made-to-order production. 3. Once the order is confirmed, we will issue an order confirmation. 4. Deliveries will be made in installments whenever possible, allowing users to see and try the products themselves while confirming the quality during delivery. 5. Therefore, we ask users to set delivery dates that allow for as much flexibility as possible for partial deliveries. 6. For users with ongoing transactions, we generally ask for your understanding regarding lead time stabilization through procurement from multiple companies. 7. In the unlikely event that issues arise with quality, lead time, cost, or transportation, we can respond flexibly through procurement from multiple companies. 8. Our company directly trades with approximately 500 factories in China, so you can trust us to handle your needs with confidence.