Linear Technology DC2181A-A, Демонстрационное руководство

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dc2181afb
DEMO MANUAL
DC2181A-A/B
theory of operation
AE1, the Receive Antenna
One of the main differences between the DC1967A and the
DC2181 demo boards, is that the wireless power receive
antenna is separate for the DC2181 demo board.
Several antennas were tested, with the criteria of pass-
ing 2.5W at 8mm spacing. The following table lists the
antennas that passed successfully:
MANUFACTURER CONSTRUCTION MFG PART NUMBER
TDK Ferrite on PCB B67410-A0223-X195
Inter-Technical Ferrite on PCB L41200R01
Inter-Technical Ferrite on PCB L41200R02*
Inter-Technical Litz on Ferrite L41200R03
Inter-Technical Litz on Ferrite L41200R04
Inter-Technical Ferrite on PCB L41200R05
TDK Wire on Ferrite WR282830-37M8-LR4
Würth Wire on Ferrite 760308101303
*AE1 wireless power receive antenna shipped with DC2181
The manufacturers can be contacted at:
Inter-Technical www.inter-technical.com, search for LTC4120
TDK www.tdk.components.com
Würth http://katalog.we-online.de/pbs/
datasheet/760308101303.pdf
AE1 is physically mounted with double sided tape, as well
as the electrical connection pins. Removing AE1 is likely
to damage the ferrite on the backside of the antenna. Only
remove AE1 when you have the a suitable replacement
at hand.
Figure 10. Power Transfer vs Axial Distance and Misalignment
17mm
Full Power
±1mm
½ Power
±1mm
½ Power
Envelope
18mm
13mm
15mm
2mm
3mm
4mm
5mm
6mm
7mm
8mm
9mm
Full Power
Envelope
DC1967A-B with
25mm Receive
Antenna
DC2181A F10
Transmit Antenna
1mm Minimum Clearance
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