The 25W Samsung Fast Charge Protocol chip can use the following two chips: JD6621, JD6606S
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The JD6606S is an integrated USB Power Delivery 3.0 protocol controller. It also supports Huawei's Fast Charging Protocol (FCP), Super Charging Protocol (SCP), AFC Charging Protocol, and Qualcomm's QC2.0\/3.0\/3 Charging protocol technologies, which are designed for USB Type-C charging applications such as power adapters, wall chargers, switchboards, and more.
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The JD6606S monitors CC pins to detect USB-C port insertion\/removal. It also offers an output voltage range from 5V to 20V. Detects VBUS and VBUSC voltages and supports discharge for compatible connection ports.
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In addition, the JD6606S monitors the USB D\/D-data cable and automatically adjusts the output voltage according to different device requirements. It offers an output voltage range of 3.6V to 20V.