New wireless charging transmitter (Tx) and receiver (Rx) coils
-
The device is small in size and has a rated power of
30 W
-
Operating temperature up to
+105
°
C
, saturation current of
22 A
Vishay announced
new wireless charging transmitter (Tx) and receiver (Rx) coils using iron powder material with moisture resistance up to 90% relative humidity.
The Vishay Dale
IWAS3222CZEB190JR1
,
IWTX4646DCEB240JR1
,
IWTX47R0DAEB6R3JR1
, and
IWTX47R0EBEB240JR1
are suitable
for industrial, medical, and consumer applications with power levels up to 30 W, operating at temperatures up to +105
°
C, and occupying a 25% smaller footprint than previous-generation devices and competitive solutions
.
The device released today has high moisture resistance, and its special shielding coating provides excellent environmental protection. In addition, the back of the coil uses high saturation iron powder, which is not affected by temperature fluctuations and inductance drops common in ferrite solutions. The choice of back magnetic shielding material is critical because it can be used to increase the inductance of the coil, suppress electromagnetic field leakage, and maximize the directionality of the electromagnetic field
.
The IWAS3222CZEB190JR1
Rx coil uses self-adhesive enameled wire, with an inductance of 19.6 mH at 200 kHz
,
a Q value of 28.5, and a DC resistance (DCR) of 357 mW
.
The IWTX4646DCEB240JR1
, IWTX47R0DAEB6R3JR1, and IWTX47R0EBEB240JR1 have inductances ranging from 6.3
mH
to 24
mH
. The Tx coil DCR is as low as 40 mW
,
the Q value is up to 200, and the temperature rise current is 7 A, which can maximize the power transfer efficiency of the receiving coil, while the high saturation current reaches
22 A
, ensuring stable inductance and performance consistency within the operating current range
.
For increased durability, the Tx coils use silk-wrapped Litz wire, which helps prevent scratches and wire deformation, improves insulation, and reduces skin-effect and proximity losses. In addition, the IWTX4646DCEB240JR and IWTX47R0EBEB240JR1 use Alpha winding process technology to eliminate wire crossing and minimize height.
Typical applications include handheld power tools and diagnostic and therapeutic instruments, drones, smartphones and tablets, gaming consoles, and wearable devices. The wireless charging coils are
RoHS-
compliant
and
Vishay
Green-compliant, halogen-free, and available in rectangular, square, and round shapes.
Device Specifications
Vishay uses iron powder material
New wireless charging transmitter (
Tx
) and receiver (
Rx
) coils
Please
read the original text
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????
Samples and production quantities of the IWAS3222CZEB190JR1, IWTX4646DCEB240JR1, IWTX47R0DAEB6R3JR1, and IWTX47R0EBEB240JR1 are available now, with lead times of 14 weeks
.
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