Preface
As wireless charging applications become more and more popular, a wireless charging product has become a perfect solution to solve the charging of customers' mobile phones, watches, and earphones. One-core multi-charge wireless chargers are produced on demand and have become the mainstream products in the market. In order to solve the user's power anxiety, MPP15W fast charging is of course essential.
Before the launch of the Qi2 MPP standard, brand customers had to adopt Apple's Magsafe module, but the expensive price of the module affected sales. With the official launch of the Qi2 MPP standard, the system cost has dropped significantly, which will inevitably bring about a high-speed increase in the market. Due to the high maturity of the program, the Qi2 certification test has been at the forefront of the industry, and the testing machine manufacturers NOk9 and GRL have been used to eliminate machine bugs and accelerate the maturity of the test environment.
Jinxin's Qi2 module (CV222) also successfully passed the Qi2 compliance and compatibility certification with the least time and one time in the Soft Launch stage, becoming one of the first four companies to pass the certification and obtain the Qi2 certificate. At present, Jinxin Micro has passed 30 Qi2 certifications together with customers, and has a record of customers directly passing the certification (without the participation of Jinxin Micro engineers) and compatibility.
Detailed explanation of Jinxin Micro's one-core dual-charging scheme
In a very short period of time, Jinxin Microelectronics completed the certification test of "one core dual charging (MPP+BPP)" based on CV90368 chips, and it is commendable that Jinxin Microelectronics engineers only went to the certification company to modify it once. Successfully passing the test means a lot, indicating that the CV90368-based "one-core dual-charging" solution has good decoding performance, strong anti-interference ability, and high solution standards and maturity, which can shorten the customer's development cycle and accelerate the customer's time-to-market.
In 2015, Jinxin Microelectronics passed the EPP certification of dual charging together with customers, and in 2016, the industry took the lead in launching the "one core dual charging" and "one core three charging" chip solutions, which has been leading the development of the industry.
In the middle is the PCB module of the solution, which can be connected to two wireless charging coils for one-core dual charging.
In the past, multi-charging schemes usually used dual chips, and each channel of such a scheme would receive communication signals from each other, which would lead to mutual interference and affect charging efficiency and stability. In addition, the dual-chip approach adds to the overall cost of the system, including the cost of the chip itself and additional circuit design and routing complexity.
The one-core multi-charging solution of Jinxin Micro can well avoid this kind of problem, with strong anti-multi-channel communication interference ability, multi-channel charging through a single chip, which effectively simplifies the circuit design, reduces the number of external components required, uses one less main control chip, saves BOM cost, and can also dynamically process energy distribution in the optimal way.
The CV90368 chip's 'one core and two charging' solution realizes the physical separation of the PCB and the coil, so as to ensure that the coil temperature is not affected by the temperature change of the PCB, and ensure the stability and reliability of the charging speed. The application of single-chip control technology makes the dynamic distribution of power more efficient and accurate, and has better communication interference suppression and discrimination capabilities.
CV90368 The "One Core Dual Charging" solution takes 2 hours and 25 minutes to charge the iPhone 14 Plus from 0 to 100% at room temperature of 26.8°C.
Close-up of the front of the PCB of the scheme.
Close-up of the back of the PCB, it can be seen that the components are minimalist, and various components such as chips are concentrated on the front.
Jinxin micro CV90368
Jinxin Micro Qi2 chip CV90368 is a wireless charging transmission SoC chip that conforms to Qi v1.2, v1.3 and Qi 2.0 standards, supports BPP 5W, Apple 7.5W, Samsung 10W, EPP 15W and MPP15W wireless charging in line with Qi standards, and supports customer private protocols, customizable communication protocols, and has strong compatibility and multi-power support.
CV90368 built-in 32-bit high-speed CPU core, built-in 32KB storage MTP, 16KB Mask ROM, 6KB RAM and support Type-C port upgrade FW. At the same time, it widely supports the mainstream fast charging protocols on the market, with built-in full-bridge MOS gate drivers, 4 pairs of complementary 16bits high-speed PWM@128MHz, 2 high-speed independent 16bits PWM and 13 12bits high-precision ADCs, which makes it have great advantages in performance, scalability, adaptability and control capabilities.
CV90368 built-in voltage and current dual decoding, low zero drift op amp, hardware overvoltage protection function, support Q value detection and FOD foreign body detection function, but also has 18 GPIO, support I2C, UART communication, provide more connection and expansion options, so that the chip can carry out efficient communication and data exchange with other devices, and achieve more complex control and monitoring functions.
CV90368 adopts the QFN56 package, the overall size is more compact and compact, and it supports one "core" dual charging, so it can be used in the all-in-one wireless charging base and various wireless charging devices.
Introduction of Jinxin Micro Qi2 solution
Single charging module
In addition to the above-mentioned "one core and two charging" technology solutions, Jinxin Microelectronics has also launched Qi2 solutions suitable for all application scenarios to the market, which have high efficiency and high maturity, which can quickly and efficiently help products pass Qi2 certification and help customers accelerate their time to market.
At the same time, these Qi2 modules have passed Qi2 certification.
CV222 QI-ID：14732 （BPP+7.5W+MPP）
CV223 Qi-ID: 20946 (BPP+PPDE+EPP+MPP)
CV225 QI-ID： 20987 （BPP+PPDE +MPP）
Qi2 wireless charging power bank
In addition, there is also a mobile power supply solution based on Qi2 wireless charging module, please contact Jinxin Micro for details.
Summary of the charging head network
The 'one core and two charging' scheme supported by the CV90368 chip of Jinxin Microelectronics has strong decoding performance, anti-interference ability and highly mature technical standards, and the multi-channel charging technology realized by a single chip effectively avoids the common communication interference problems in the multi-charging scheme, while simplifying the circuit design, reducing the need for external components and reducing the BOM cost. In addition, the innovative design of the CV90368 chip realizes the physical separation of the PCB from the coil, ensures the stability of the charging speed, is not affected by the temperature change of the PCB, and realizes the efficient dynamic distribution of power through the single-chip control technology.
As the first wireless charging chip company in China, Jinxin Microelectronics has been committed to the development of wireless charging chips and solutions for ten years, and has taken the lead in launching: 5V power supply three-coil, double foreign body detection, the first to launch a wireless fast charging third-party solution in 2015, the launch of "one core dual charging" in 2015 and passed the Qi certification in that year, 5-coil dual charging, and the industry's first 19-coil triple charging with Xiaomi. Over the years, we have grown together with customers and innovated together. Jinxin Micro also provides Qi2 solutions for all application scenarios, which can help customers accelerate their time to market with high efficiency, high maturity, fast and high Qi2 certification pass rate.