ISMARTWARE Technology has launched a highly integrated fast-charging mobile power SOC chip SW6308. This chip integrates a two-way synchronous step-up and step-down controller and a protocol chip. Two switch tubes are also integrated inside the chip. During application, the use of two external switch tubes can be reduced. Based on high integration, peripheral components can be streamlined. SW6308 supports 2-6 string battery applications and supports 45W output power, which meets the needs of high-power step-up and step-down applications such as single-chip high-power mobile power supplies, outdoor power supplies, and power tool battery packs. It provides high integration and high conversion efficiency. USB-C fast charging support. This chip also supports UFCS integrated fast charging, which has better compatibility. The following will bring you an analysis of the SW6308 mobile power supply solution and introduce this reference design in detail.
There is a ISW SW6308 ACC/ACL three-port multi-protocol buck-boost mobile power supply SOC in the center of the front of the PCB board. It is highly integrated and convenient for circuit design. Each interface has fast charging, digital power display, indicator light display and protection functions. accomplish.
The devices on the DEMO adopt a single-sided layout design.
The actual measured PCB board length is 69.59mm.
Width is 45.79mm.
Thickness is 11.29mm.
In addition, the weight of DEMO was measured to be approximately 21g.
Power on the PCB board can measure that the USB-C1 port supports UFCS, FCP, AFC, QC3+/4+, SFCP, PD3.0, PPS, DCP, SAM 2A, and Apple 2.4A charging protocols. The PDO message shows that the USB-C1 port also has five sets of fixed voltage levels:
5V3A, 9V3A, 12V3A, 15V3A, and 20V2.25A, as well as a set of PPS voltage levels of 5-16V3A.
It was measured that the compatible protocol of the USB-C2 port is exactly the same as that of the USB-C1 port.
It is measured that the USB-A port supports UFCS, FCP, AFC, QC3+, SFCP, DCP, SAM 2A, and Apple 2.4A charging protocols.
Finally, it was measured that the USB-A port UFCS fusion fast charge also has three voltage levels: 3.4-5.5V5A, 5.5-11V4.5A, and 11-21V2.25A.
This 45W mobile power supply reference design of ISW Technology uses the SW6308 chip. Based on integrating the synchronous step-up and step-down controller and the protocol chip, this chip also integrates an additional VBUS half-bridge, which can reduce the use of two MOS tubes. Further improve the level of integration and reduce the number of components and material costs. ISW Technology SW6308 supports USB-C, USB-A and Lightning interfaces, supports 45W PD fast charging and UFCS integrated fast charging, supports 2-6 string lithium battery applications, and is a high-power mobile power supply, outdoor power supply, power tool battery pack, etc. High-power buck-boost applications provide a bidirectional synchronous buck-boost solution that is easy to configure and easy to apply, allowing the mainstream USB-C interface to charge more types of devices.
