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STWBC2-HP Datasheet(PDF) 6 Page - STMicroelectronics

Part # STWBC2-HP
Description  Digital controller for wireless battery charger transmitters
PDF  96 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STWBC2-HP Datasheet(HTML) 6 Page - STMicroelectronics

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2
Analog Front-End (AFE)
The following figure shows a simplified block diagram of STWBC2-HP AFE.
Figure 4. STWBC2-HP AFE block diagram
2.1
Analog AFE functions
2.1.1
Power management
The figure below shows the block diagram of the STWBC2-HP power management. The power management of
the whole system is fully integrated in STWBC2-HP AFE. Power supply for µC (STM32G071) is provided by LDO
3V3.
The power source of the STWBC2-HP application is a DC voltage. In industrial applications it is generally a
simple DC source up to VIN=24 V. In consumer applications most power sources are interfaced using µUSB or
USB-C connector, therefore the STWBC2-HP is designed to support current-limited supplies operating down to
4.1 V. The STWBC2-HP is able to negotiate power contract with USB-C signaling or using USB Power Delivery
protocol.
STWBC2-HP generates its own power supplies from the power source directly and with good efficiency: to obtain
this result a DC-DC BUCK converter is integrated into the STWBC2-HP.
STWBC2-HP
Analog Front-End (AFE)
DS13825 - Rev 1.0
page 6/96



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