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STWBC86JR bảng dữ liệu(PDF) 10 Page - STMicroelectronics

tên linh kiện STWBC86JR
Giải thích chi tiết về linh kiện  Qi compatible wireless power transmitter for 5W applications with integrated full bridge
PDF  40 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STWBC86JR bảng dữ liệu(HTML) 10 Page - STMicroelectronics

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Figure 4. Full bridge inverter
Typical Operating Frequency range of the full-bridge inverter is op = 120 … 148 kHz , duty cycle range 10% to
50%.
Primary Coil and Shielding has a self-inductance P = 6.3±10% μH.
The value of the series capacitance is P =0.4±5% μF.
The input voltage to the full-bridge inverter is 5±5% V.
5.3
ASK communication
Robust and reliable in-band ASK communication is critical to the operation of any Qi compliant devices.
Using ASK modulation, the receiver sends Control Error Packets (CEP) to tune the operating point to match load
requirements.
The coil signal is demodulated using a circuit shown below and fed to the VS pin of STWBC86.
Figure 5. ASK demodulation filter circuit
10K
D
5.1K
220K
4.7nF
AC1
VS
22nF
680pF
STWBC86
ASK communication
DS14079 - Rev 1
page 10/40



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