With the gradual popularization of Type-C interface, small household appliances have slowly begun to adopt Type-C, eliminating the previous DC interface, and the application of Type-C interface in small household appliances is becoming more and more extensive. The Type-C interface supports a wide range of high currents and voltages, so how can I ensure that the device can correctly identify and use various voltages (e.g., 5V, 9V, 12VV)? That's where PD decoy chips come into being.
The full name of PD decoy chip is Power Delivery decoy chip, which is a power management chip that conforms to the USB Type-C interface specification and is responsible for communicating with the power supply protocol chip of the charger. By using PD decoy chips, small household appliances can use the charger of the mobile phone to power the product such as 5V, 9V, 12V, 15V, 20V, etc., without the need for a separate charger, so as to ensure that the device can get the best charging experience.
At present, there are a variety of fast charging protocols for chargers on the market, such as PD protocol chargers with Type-C interface, QC protocol chargers with USB-A interface, Samsung's AFC protocol, Huawei's FCP protocol, and so on.
For example, small household appliances use a Type-C interface, which requires 9V power supply, and must be able to support it no matter what kind of charger is connected externally. At this time, our power receiver chip XSP08A needs to support the function of multiple fast charging protocols. The chip will automatically detect the type of fast charging protocol connected to it, and adjust the output voltage and current according to the actual needs of the device. In this way, no matter what kind of charger or computer the user uses to charge small household appliances, they can get the best charging effect.
In addition, the PD decoy chip also has a security protection function. It can intelligently identify whether the connected voltage and current meet the specifications, and once an abnormality is found, the power supply will be cut off immediately, thus protecting the equipment from damage.
The application of PD decoy chips in small household appliances not only improves the charging experience of the device, but also greatly improves the security of the device. With the popularization of Type-C interface and the development of USB PD technology, PD decoy chips will play an increasingly important role in small household appliances.