power protection
15.1 Mobile Phone Fast Charging PD/TYPE-C Interface Protection
The full name of PD is called USB Power Delivery Specification, which is a fast charging standard introduced by the USB standardization organization. This solution adopts Leiditech SD24CW (package SOD-323 24V) to effectively protect plugging static electricity and surges, and has been maturely applied in a large number of cases.
(USB PD fast charge 15W 27W 45W)1. VBUS charges and supplies power for mobile phones.
2.CC1/CC2 is the Configuration Channel.
Main functions of CC1/CC2 pins:
A. detect the connection of data lines, distinguish the front and back insertion of data lines, and distinguish the master and slave devices.
B. Configure VBUS (there are two modes: USB TYPE_C and USB Power Delivery)
C. when configuring other modes, such as audio accessories
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The TX1/RX1 TX2/RX2 D+D- pins will be used in some Solutions.
TX1/RX1 TX2/RX2 are USB3.1 data transmission, and only one of them is used by Type-c mobile phones at present.
D+D- is a USB2.0 data transmission signal
See the following table for more high current electrostatic surge protection and small package ESD:
