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Documentation
The following sections document the hardware design of the TSDMRX-19V20W-EVM. This information can be used
to better understand the functionality of the design, as well as assist in creating your own hardware solution based
on this design.
A. Block Diagram
The TSDMRX-19V20W-EVM may be divided into a number of sub-blocks as show in the diagram:
Antenna: Transmit – power source driving the receiver EVM (in this document: part of the TSDMTX-19V2-EVM).
Antenna: Receive – coil of wire placed in proximity to the transmit antenna to power the EVM receiver system.
Also includes zero-crossing detection and over-voltage protection circuitry.
Rectification&Modulation – full wave Rectifier Bridge.
Current Sense – low power low offset current sense aplifier IC based on the TS94033.
Controller – based on the TS81000 High Efficiency Receiver Controller for Wireless Power Systems. The TS81000
collects voltage, current, and temperature feedback signals from the receiver system, controls the actions.
DC/DC Converter – based on the TS30042 Switching frequencies 1MHz, 2A Current-Mode Synchronous Buck
DC/DC Converter, which converts 19VDC at up to 1.1 amperes for use by the user-selected user of the received
power.
Wireless Charging
User Guide
TSDMRX-19V20W-EVM
www.semtech.com
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Rev 1.03
Semtech
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