This year can be described as a year of accelerated popularization of usbpd fast charging. According to the latest statistics of charging head network, there are 43 mobile phones on the market that can support usbpd fast charging, of which 18 are compatible with the latest usbpd3.0 (PPS) QC fast charging protocol chip.
The demand of smart phones for broadband wireless communication, image processing and other aspects leads to the exponential growth of actual power consumption. In the future, 5g communication bandwidth will be 10 times higher than 4G, 4K / 8K and other high-definition video technologies will be gradually applied, and the processing capacity of CPU, GPU and other computing circuits will be continuously enhanced. All these will lead to the exponential growth of the overall energy consumption demand of smart phones.
The battery capacity increased linearly and slowly, and the energy consumption demand gap gradually widened. Battery technology has been unable to break through, becoming the biggest bottleneck of terminal use. The growth of battery capacity is slow, with a linear increase of about 15% every year, while the energy consumption increases exponentially, and the gap between energy consumption demand and battery performance is becoming more and more obvious. The battery performance curve will be seriously derailed from the energy consumption demand curve. Improving the charging speed has become the key solution for battery life, and fast charging has become the focus of market competition.
There are two common QC fast charging protocol chip technologies:
High voltage fast charging: improve the terminal charging power and rate by increasing the output voltage of the power adapter
Low voltage fast charging: improve the terminal charging power and rate by increasing the output current of the power adapter
Domestic mobile phones have grown rapidly and gained the right to speak. With the continuous expansion of the global share of domestic mobile phone manufacturers such as Huawei, oppo and vivo, and the improvement of the industrial chain integration ability of Chinese manufacturers, they will be able to obtain the leading power in the fast charging market. Compared with the high-voltage fast charging mode, the low-voltage high current has higher efficiency under the same power, and the charger and mobile phone have less heat, which will occupy the mainstream of the market.
QC fast charging protocol chip standards are as follows:
1. Qualcomm: quickcharge (belongs to high-voltage fast charge)
2. MediaTek: pumpexpressplus (versions 1.0 and 2.0 of pumpexpress1.0 are high-pressure fast charging routes, which are moved from pumpexpress3.0 to low-pressure fast charging)
3. Oppo: vooc scheme (belonging to low-pressure fast charging)
4. Huawei: compatible with qc2.0 protocol and Hisilicon fast charging protocol Huawei fast charging technology
5. USB developer Alliance: powerdelivery
6. Vivo: dual engine flash charge
7. Lenovo / Motorola: Turbocharger
8. Samsung: its own fast charging scheme
9. Apple: 20V fast charging technology
1. Qualcomm's quickcharge solutions (e.g. qc2.0, qc3.0)
Qualcomm quickcharge adopts high-voltage fast charging standard. Thanks to its dominant position on the processor side of mobile phones, more than 100 smartphones currently use Qualcomm quickcharge. Mainstream brands such as Xiaomi 4C, Xiaomi note and Samsung are using this charging technology. This is quite related to the platform adopted by high-end smart phones. In addition, this technology is relatively simple, relatively easy to implement, the cost increase is not obvious, and the market is easy to accept. Qualcomm QC charging technology has two versions: qc2.0 and qc3.0. At present, there are few qc3.0 mobile phones, and qc2.0 is still common. Qc3.0 adopts high-pressure fast charging technology through
3.6 ~ 20V dynamic adjustable voltage and maximum 3A current to achieve maximum 36W charging power. Meanwhile, qc3.0 adopts the optimal voltage intelligent negotiation (inov) technology, which allows the power receiving device to judge by itself, charge at the most appropriate power level, and maximize the energy conversion efficiency.
2. MediaTek pumpexpressplus
MediaTek pumpexpress fast charging technology is different from Qualcomm qc2.0 in implementation, but it has the same advantages. Qualcomm qc2.0 realizes voltage regulation through D + and D - signals of USB port, while MediaTek's pumpexpress fast charging technology communicates with the charger and applies for the corresponding output voltage through VBUS of USB port. Qc2.0 communicates by configuring D + and D-Voltage. Pumpexpress communicates by current pulse on VBUS, but the ultimate goal is to increase the voltage of charger to 5V, 7V and 9V.
3. Oppovooc scheme (belonging to low-voltage fast charging)
The fast charging technology developed by him is called "vooc flash charging technology", which is also the most mysterious fast charging technology. At present, only a few products of oppo are in use, namely find7 and N3. Due to oppo's patent restrictions on this technology, other mobile phone manufacturers can only marvel, and the cost is relatively high, the charger is large, and the portability is not as good as other fast charging technologies.
The biggest difference between the vooc flash charging technology of oppo and the traditional charging is that the charging control circuit is transplanted to the adapter, that is, the largest heating source is transplanted to the adapter. In this way, the control circuit is in the adapter and the charged battery is in the mobile phone. The heating of the mobile phone during charging can be well solved. In order to better control the charging process (for example, the control circuit needs to monitor the battery voltage and temperature in real time). Oppo especially adds an intelligent control chip MCU at the adapter end, which realizes the charging control circuit and intelligently controls the whole charging process.
4. Compatible with qc2.0 protocol and hisilic fast charging protocol, Huawei QC fast charging protocol chip technology
Recently, glory released 10000mah fast charging mobile power supply. This power supply can complete 100% charging in 3.5 hours and 50% charging for glory 7 in half an hour. The general configuration is as follows: high density polymer cell and support 18W (max) Two way fast charging, compatible with Hisilicon FCP and other mainstream fast charging protocols, and supporting type-C or USB output. Relevant evaluation shows that this power supply can charge Huawei P9 2.3 times, glory V8 1.9 times, Samsung S7 2.3 times and iPhone 6S 4 times. From the two-way charging performance and relevant data, this product should be regarded as the flagship product in the domestic mobile power market.
Glory's fast charging mobile power supply not only realizes 9v2a two-way fast charging, but also supports many fast charging protocols such as Hisilicon, Qualcomm qc2.0 and MTK. It is also compatible with Qualcomm qc2.0, MTK and other fast charging protocols, which can meet the requirements of almost all mainstream fast charging phones in the market.
4、 QC fast charging protocol chip
The battery management chips currently used in the market are mainly Ti (Texas Instruments) and Fairchild (Fairchild Semiconductor), as well as dialog semiconductor company Qualcomm quickcharge 3.0 (qc3.0) Chipset, PI Qualcomm qc3.0 identification protocol chip chy103d, hanergy also launched a fast charging chip he4120 for smart phones, and Xidi micro also launched the application scheme of fast charging chip hl7005.
1. Ti (Texas Instruments) bq25895qc fast charging protocol chip
2. Fairchildfan501a and fan6100q
3. Dialog semiconductor qc3.0 chipset
4、PowerIntegrationsCHY103D
5. Hanergy he41201qc fast charging protocol chip