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WCT1012VLF/WCT1013VLH Consumer MP-A11 (WCT-
15W1CFFPD) V1.0 Wireless Charging Application User’s
Guide, Rev. 1, 05/2019
8
NXP Semiconductors
4.1. Input EMI filter
The input filter consists of the common-mode filter FL1 and filter capacitors C2, C3, C5, C7, and L1.
4.2. USB power supply
A USB type-C cable can be plugged to the USB type-C connector J2. The PTN5110 USB PD PCTC
PHY is selected to support the type-C Configuration Channel (CC) interface and the USB PD physical
layer functions.
The MPA-11 design also supports the Qualcomm Quick Charge 2.0/3.0 technology. The WCT
controller manages the Qualcomm QC 2.0/3.0 protocol through the GPIOs and resistors connected to the
D+/D- data line.
Figure 6. USB PD power supply and QC circuits
4.3. System voltage DCDC
The USB PD or QC adaptor input is connected to buck converter U12 (MP2314). Its output is 3.3 V.
This 3.3 V output is mainly for the WCT1012VLF/WCT1013VLH and other 3.3 V-powered
components. Generally, the DCDC load current is low. It is preferable to select a DCDC with a high
efficiency in the light-load condition.
The MP-A11 design can also support other customized-propriety power protocols.