Semtech TSWITX-G4-EVM User Manual page 6

Wireless charging transmitter for ts51223-based receivers
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Connect a DC voltmeter across the VOUT+ and GND pins to monitor the voltage being output to the load,
and a DC ammeter in series with the VOUT+ line. Set levels to allow for up to 10 volts and 1 amp to be
observed.
With no load selected, place the receiver on the center of the transmitter target circle (the 'primary coil' or
'transmitter antenna'). Once transmission begins, you should observe approximately 5 volts and 0
amperes on the meters. Then turn the Electronic Load from 0mA to 250mA, you can observe the Vout is
constant.
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TSWITX-G4-EVM
5 of 18
User Guide
Rev 1.00

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