In the past two years, under the popularity of USB PD fast charging and high-power private fast charging technology, the market share of USB-C charging interface has shown geometric growth, and has become the main interface type for device charging and data transmission at present and in the future. According to the data, the European Commission has begun a legislative process that will promote the unification of the charging interface of the equipment.
The terminal equipment charging interface tends to be unified, which will have a significant impact on the pattern of the accessories market. It is foreseeable that due to the increase in the base of USB-C products, the market demand for multi-port chargers will gradually increase, and low-power dual USB-C port chargers are also likely to become the next market hotspot.
There are currently 30W on the market
Nearby common charger specifications are 30W and 33W, 35W belongs to a relatively new application specification, and the current pain points of this power band are mainly focused on how to achieve miniaturization, low cost, easy debugging, and simple peripherals. In order to cope with the development needs of the market, the industry's well-known power chip manufacturer BiyiWei has launched a set of 35W dual C port fast charging source reference design. The solution applies a full set of AC-DC power chip of Biyi Micro, the system design is small and compact, the primary side integrates CoolMos, the secondary side integrates 100V MOS, thanks to the high integration of the chip, the whole set of solutions to achieve a streamlined peripheral design, thereby obtaining cost advantages. It is worth mentioning that the reference design has passed various performance tests inside Biyiwei, and the parameters and indicators have reached the requirements of mass-produced products.
Biyi micro this 35W dual C port fast charging source scheme is composed of a main PCB board and two sub-PCB boards, the front is a capacitor, inductor, transformer and other plug-in components, the input terminal on the small board is provided with a ceramic fuse, the transformer is centered, the output of the sub-board is provided with a secondary buck circuit, and set up two USB-C interface, buck inductance and filter capacitor.
From the back, the component layout on the entire main PCB board is very simple, of which the primary side power supply main control chip integrates the controller and high voltage switch tube, and the secondary side synchronous rectifier chip also adopts a built-in MOS design. In addition, there is a chip rectifier bridge at the input, and between the primary and secondary is a chip Y capacitor and an optocoupler.
The PCB board length of the measured whole program is about 48.5mm.
The width is approximately 32.6mm.
The thickness is approximately 19.6mm.
The primary main control chip of the scheme adopts Biyi micro KP22035WG, which is a high-performance current mode PWM conversion chip for offline flyback converter integrated CoolMos, which adopts green energy-saving mode, hiccup mode, medium-load valley bottom conduction mode and other optimized system efficiency, which can easily meet the requirements of six levels of energy efficiency. The chip supports 8-70V VDD power supply, which is convenient to meet the requirements of wide voltage output power supply.
Biyi micro KP22035WG built-in high-precision 65kHz switching frequency oscillator, integrated slope compensation soft start, frequency shake technology, loop gain adjustment and other functions. The stability, reliability and electromagnetic compatibility of its system have been greatly improved.
Biyi micro KP22035WG integrates complete protection functions, including VDD undervoltage protection (UVLO), VDD overvoltage protection (VDD OVP), output overvoltage protection (OVP), output undervoltage protection (UVP), cycle-by-cycle current limiting (OCP), overload protection (OLP), short circuit protection (SCP), built-in overtemperature protection, leading edge blanking (LEB), CS pin open circuit protection, etc.
The secondary synchronous rectification chip selects Biyi Micro KP40511WG, which is a high-performance secondary-side synchronous rectifier power switch, built-in 100V MOS, using the ASOP6 package of Biyi Micro Heat Sale, taking into account the good heat dissipation performance and low-cost miniaturization requirements, the chip supports High Side and Low Side configuration, and has a built-in VDD high-voltage power supply module, without auxiliary winding power supply to reduce system costs.
Biyi micro KP40511WG has a fast shutdown function, supports intermittent working mode (DCM), quasi-resonant working mode (QR) and continuous operation mode (CCM), and the intelligent on-off detection function is integrated inside the chip, which can effectively prevent SR mis-opening caused by Vds oscillation in discontinuous working mode (DCM).
In addition, in terms of protocol, it is equipped with a SW3556 chip, which is compatible with PPS, PD, QC, AFC, FCP, SCP, PE, SFCP, TFCP and other fast charging protocols, the overall solution supports 5V3A, 9V3A, 12V2.92A, 15V2.33A, 20V1.75A, the maximum power is 35W, the dual port output at the same time, the total power is 5V3A power.
Charging head net summary
For many current users, in addition to mobile phones, it is also equipped with tablets, TWS Bluetooth headsets, watches, bracelets and other electronic products, so the original standard single-port charger is far from meeting the charging needs of multiple devices; in addition, multiple chargers have also brought storage problems to users, which has also become the opportunity for the rise of the dual USB-C port charger market.
"Spring River Plumbing Duck Prophet", the industry trend of the fast charging accessories market, the original chip factory is also the first to perceive. It is understood that at present, there are a number of chip factories in the industry layout of the dual C-port fast charger market, biyi micro launched this set of 35W dual USB-C port fast charging program thanks to the application of high-integration AC-DC power chip and protocol chip, the entire set of program materials is almost equivalent to the conventional 20W fast charging source program, the cost is very advantageous, and the current performance has reached the mass production requirements, can shorten the new product listing cycle.
If you need to know a lot of product information, you can contact the original factory or agent of Biyi.