Wireless Charging
www.semtech.com
15 of 17
User Guide
Rev 1.03
TSDMRX-19V20W-EVM Semtech
FAQs
Q: What output voltage is provided by the TSDMRX-19V20W-EVM system?
A: 19 volts, at up to 20 watts total power.
Q: What mode does the TSDMRX-19V20W-EVM operate in?
A: The receiver operates with indsutive proprietary signaling on Semtech 19V2 (TSDMTX-19V2-EVM) transmitters.
Q: Where can I find more information on the Qi and PMA standards?
A: There are a number of websites that address this subject. A good starting point for Qi would be:
http://www.wirelesspowerconsortium.com/technology/how-it-works.html
.
PMA, which is now joined with A4WP, is now called AirFuel. Information on them can be found at the following
website: http://www.airfuel.org/technologies/inductive.
Q: Does the EVM part number represent something in particular?
A: Yes. The part number is broken into a prefix, main body, and suffix, separated by dashes. The prefix is comprised
of three two letter groupings that each help define the product represented. As such, the part number can be read
as follows:
Prefix characters:
1+2 = Company :
TS = Triune/Semtech
3+4 = Environment :
DM = Dual Mode
WI = Wearable Infrastructure
5+6 = Type :
TX = Transmit
RX = Receive
Mid-section = Device Voltage and/or Wattage
Suffix = Equipment type:
EVM = Evaluation Module
MOD = Production Module
Therefore, the TSDMRX–5V/10W–EVM is a Dual Mode, 5Volt, 10 Watt Receiver Evaluation Module provided by
Semtech.
Q: What if my questions weren’t answered here?
A: Please visit the Semtech website as described on the next page. An updated FAQ as well as latest firmware for
the TSDMRX-19V20W-EVM is maintained there and may contain the answers you’re looking for. Your local
Semtech FAE can also assist in answering your questions.