Speaking of mobile phone fast charging technology, the most common ones are Qualcomm Quick Charge 2.0 and Quick Charge 3.0, which have been basically popularized, and various products are coming. MediaTek also engaged in its own fast charge Pump Express. In this case, Texas Instruments couldn't sit still and built its own fast charge "MaxCharge."
MaxCharge will introduce its lithium battery charging chip, allowing the system to import the phone or tablet in a separate design to improve voltage, current and dynamic power control.
Based on the separate architecture and the company's fast-charge agreement, Handshaking between the fast charging chip and the charger will not require a processor to enhance system configuration flexibility. At the same time, independent fast charging chips are also available. More space to add functional areas such as PowerPath, overvoltage/overcurrent/overtemperature protection and fuel gauges, and the ability to add various algorithms to build a charging model to dynamically allocate output power to ensure battery life. And security.
At this stage, international mobile phone brand factories and first-line OEMs in mainland China are interested in the new discrete design, which will reduce the impact of fast charging on lithium batteries and reduce the processor factory's components for mobile phones and charger systems. With the help of the force, it is gradually negotiating cooperation with Texas Instruments. It is expected to adopt a stand-alone fast charging chip and MaxCharge communication protocol to launch a flagship tablet phone (Phablet) equipped with fast charging function.
Qualcomm QuickCharge 2.0 technology increases charging speed by 75%
The first official release of QuickCharge 2.0 was in February 2013, but it is now officially commercialized. The HTCOneM8 integrates this technology. In theory, this technology can be applied to mobile phones and tablets using flagship processors such as Snapdragon 800 and Snapdragon 801, but first you have to make sure that the integrated power management IC on your phone supports QuickCharge 2.0, or has a separate QuickCharge2.0 technology. At the same time, you have to ensure that your charger also supports this technology. For example, the charger supplied with M8 only supports QuickCharge1.0, so it can't play the full strength of QuickCharge2.0.
MediaTek releases fast charging technology PUMP EXPRESS saves up to 50%
According to foreign media reports, Lianfa Research, the world's leading mobile chip manufacturer, has launched a new fast charging technology, Pump Express, which can save up to 50% of the charging time for smartphones or tablets.
No matter how advanced and powerful mobile devices are, only it has electricity available. Once the battery is exhausted, the powerful phone is useless. With the introduction of Pump Express technology, mobile devices take less time on the socket, and the low design cost makes it easier for manufacturers to bring fast charging technology to market.
Pump Express technology is built into the PMIC's power management IC and DC wall charger. It's charging speed and more flexible.
Pump Express highlights
Allowing the DC wall charger to determine the initial voltage required for charging based on the current;
The voltage is gradually increased up to 5V to reach the maximum charging current;
Pump Express provides less than 10W (5V) output power for fast DC chargers;
Pump Express Plus provides the charger with an output power greater than 15W (up to 12V);
Pump express fast charging principle analysis
Advantages of Texas Instruments MaxCharge
Compared with the existing solution, Texas Instruments is the most powerful input current is very high, reaching an amazing 5A, than the current 2A solution charging speed is expected to accelerate 60%, to achieve true fast charge. 5V/5A/25W, has reached the limit of the ordinary mircoUSB interface, the next step must be on the USB type-c.
In addition, the Texas Instruments program's input voltage can reach up to 14V (minimum 3.9V), which can be backward compatible with Qualcomm's 9V, 12V, MediaTek's 7V, 9V, 12V. In addition, the German instrument program uses QFN 4 & TImes; 4 mm package, small size, and comes with I2C interface, add MCU unit to display power, saving costs.
Fast charging will become the next trend of smartphones
Whether it is MaxCharge or Qualcomm QC or MediaTek's fast charge, it is to solve the problem of slow battery charging. Larger screens, higher resolutions, and higher speed processors make today's smartphones incredibly fast. But all of this comes at the expense of higher battery consumption.
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