Charging head network learned that Zhirong recently launched the sw2325 protocol chip using arm cortex m0 architecture, which supports a variety of fast charging protocols and supports online multiple flashing. Zhirong launched a 100-watt single-port gallium nitride reference design based on sw2325.
Sw2325 is Zhirong's first dedicated mcCu for fast charging protocol, with a built-in arm cortex-m0 processor, running at a frequency of 40mhz, and a built-in vehicle-grade 64k eflash+4k ram. Supports an ultra-wide input voltage range of 3-30v. Support pd/vooc/scp/qc/pe/sfcp and other fast charging protocols. Support optocoupler feedback, fb feedback and i2c feedback three kinds of voltage regulation methods, adapt to car charging, charger and other applications. Sw2325 supports multiple protection functions, supports online upgrades, supports multi-layer nested encryption algorithms, supports nmos or pmos path pipes, and integrates cc/cv loops, which is powerful and comprehensive.
The 100-watt reference design of Zhirong sw2325 uses a pfc+ flyback switching power supply architecture, with a switching transformer on the left and a pfc boost inductor on the right, and the output is filtered in parallel with three solid capacitors.
Zhirong this reference design, USB-C output port in the form of small board welding, easy to replace different output protocol schemes.
The input adopts two rectifier bridges in parallel rectifier, the pfc and flyback switch tubes both use nano-nv6125 gallium nitride power chip, the output voltage is controlled by the protocol ic through optocoupler feedback, the output is synchronous rectification, and the two synchronous rectifier tubes are connected in parallel.
Zhirong sw2325 protocol chip close-up, using qfn4*4-20 package, small size and simplified peripheral components.
sw2325 is a highly integrated type-c port /type-a port fast charge protocol controller, embedded arm cortex-m0 core, the maximum operating frequency of 40mhz, powerful floating-point operation capabilities can be used to efficiently execute special algorithms, convenient for personalized design. Built-in 64kb eflash, 4kb sram, and support i2c/uart and other common peripheral interfaces. sw2325 is a flexible hardware foundation, supports secondary development environments, and can flexibly define private algorithms and port encrypted packets.
The sw2325 integrates type-c interface logic, USB pd phy, vooc/scp phy, and qc/pe/sfcp/tcn and other fast charging protocol detection circuits, and integrates optocoupler feedback and fb feedback driver circuits, nmos and pmos driver circuits, and cv/cc control loops. The sw2325 has a variety of built-in security functions. Combined with acdc or dcdc and a small number of peripheral components, a complete high-performance type-c port/type-a-port fast charging solution can be formed.
Using chargelab's power-z kt002 to read the charger's fast charging protocol, the actual test is all green, and full protocol support is realized, including Huawei SCP and Vooc and super-vooc fast charging protocols are all supported.
Reading the pdo message of the charger, the charger supports five fixed voltage levels of 5v3a, 9v3a, 12v3a, 15v3a, 20v5a, and a set of 3.3-21v5a pps fast charging protocols.
Charging head net summary
Zhirong sw2325 is a protocol chip that supports online upgrades and multiple burns. Facilitate product development and debugging testing, and can burn new charging protocols at any time. The sw2325 supports optocoupler feedback, fb feedback, and i2c voltage regulation, which can communicate with a variety of devices, regulate voltage, and have a wide range of applications.