Due to the listing of iPhone 12 series mobile phones, the market demand for 20W PD fast charging has increased sharply recently. Charging head network learned that there is a shortage of power chips and fast charging protocol chips in the 20W PD fast charging market. Due to the insufficient supply of chips, many manufacturers are unable to control the order volume, and some manufacturers even cannot normally promote the 20W PD fast charging product project because they can't buy chips.
The charger circuit based on PD fast charging protocol chip can maintain the AC / DC part unchanged, but replace the QC protocol controller with PD controller, such as ccg2 (type-C controller generation 2) of Cypress Semiconductor. Ccg2 is one of the earliest PD controllers certified by usb-if. It contains arm? Cortex- M0 processor and complete PD protocol transceiver can meet various applications supporting type-C port such as charger, host, accessories and EMAC cable. There are many mass production cases in front-line brand customers such as apple, Lenovo, HP, Dell, Xiaomi and LETV.
PD fast charging protocol chip supports CCM, QR and DCM working modes; It supports wide voltage 5 ~ 12V output without linear voltage stabilizing circuit, reduces BOM cost and saves PCB space. The chip has built-in 650V high-voltage MOS, which has high efficiency, small volume and excellent temperature rise performance. In addition, a group of frequency jitter patents are adopted Π Type filter can have sufficient margin, reduce the EMI radiation of SMPS, help power circuit designers simply deal with EMI filter, and save multiple components and development time.