Home ProductsWireless Charger Coil

Aolittel Technology Co.,Ltd

Good quality Auto Fuse Holder for sales
Good quality Auto Fuse Holder for sales
Work as spec'd. would buy again.

—— Frank Kolodzeike

Great product - performed as expected

—— Robert Rossi

Great value..

—— Brianna Hill

I'm Online Chat Now

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

China Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone supplier
Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone supplier Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone supplier Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone supplier Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone supplier

Large Image :  Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

Product Details:

Brand Name: AOLITTEL
Model Number: A series

Payment & Shipping Terms:

Minimum Order Quantity: 800 PCS
Price: Negotiable
Packaging Details: Bulk
Delivery Time: 1-2 Weeks
Payment Terms: T/T, Western Union
Supply Ability: 100,000 Pieces Per Month
Contact Now
Detailed Product Description
Coil Type: Wireless Charging Coil Thoery: Induction Coil
Inductance: 2.2uH,3.9uH,7.3uH,6.3uH,8.3uH Function: Transmitter / Receiver
Maximum DC Resistance: 400 MOhms, 130 MOhms Number Of Coils: Customized ,number Of Coil & Layer

 

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

 

 

Quick details

 

Aolittel wireless charging receiving coils/shields and wireless charging transmitter coils/shields feature high permeability shielding and high-saturation powdered iron that is not affected by permanent locating magnets. All the parts are lead (Pb)-free and RoHS-compliant, and some are also AEC-Q200-qualified.

 

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

 

 

Specifications

 

Model Picture Specification
A28-5V Wireless charger coil Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

OD: 44.8*52.5 mm

ID: 18.5*28.5 mm

Thickness: 1.25H

Turns: 9 TS

Wire diameter: 0.08*105p

Wire: silk-coated wire

Inductance: 7.3 uh

Package: Sucking tray / carton

RoHs/SGS

Winding direction: Clockwise

A11-5V Wireless charging coil Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

OD: 43±0.5mm

ID: 20.5 mm

Thickness: 1.2mm

Turns: 10 TS,1 Layer

Wire diameter: 0.08*105p

Wire: silk-coated wire

Chip size: 50*5*1.0

Inductance: 3.9 uh

Inductance for add magnet: 6.8 uh

Product size: 50*2.2H

Unit weight: 15g

Package: Sucking tray / carton

RoHs/SGS

Samsung s6 wireless charging and transmitting coil Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

OD: 43 mm

ID: 20.5 mm

Thickness: 1.2H

Turns: 10 TS

Wire diameter: 0.08*105p

Wire: enamelled wire

Inductance: 6.3 uh

Package: Sucking tray / carton

RoHs/SGS

Winding direction: Clockwise

Apple Watch wireless transmitting coil Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

Inductance: 7.2 uh

With magnetic sheet

A11-5V Wireless charging coil

Double wired

Double layer

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

OD: 43±0.5mm

ID: 20.5 mm

Thickness: 1.2mm

Turns: 10 TS,2 Layer

Wire diameter: 0.08*105p x 2

Wire: silk-coated wire

Chip size: 50*5*1.0

Product size: 50*2.2H

Unit weight: 15g

Package: Sucking tray / carton

RoHs/SGS

A5 Wireless Charger Coil Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

OD: 43±0.5mm

ID: 20.5 mm

Thickness: 2.6mm max

Turns: 10 TS,2 layer

Wire diameter: 0.08*105p bifilar

Wire: silk-coated wire

magnetic sheet : 53*53*2.5

Product size:53*53*5.1H

Inductance: 7.3 uh

Package: Sucking tray / carton

RoHs/SGS

Unit weight: 46g

Iphone 6 Wireless Charing coil Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

OD: 36.*42.7

ID: 27.5*20

Thickness: 0.22H

Turns: 14 TS

Wire dia: 0.13*4p

Wire: Self sticking wire

Inductance: 8.3 uh

Package: Sucking tray / carton

RoHs/SGS

Unit weight: 0.8g

S4 Wireless charging coil Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

OD: 25.6*36.6

ID: 20.5*10.5

Thickness: 0.41H

Turns: 15 TS

Wire dia: 0.25*2p

Wire: Self sticking wire

Inductance: 12.2 uh

Package: Sucking tray / carton

RoHs/SGS

Unit weight: 1.5g

 

 

FEATURES


• Wireless charging receiving coil
• For Rx applications up to 10 W
• Optimized for 5 V charging circuitry
• High permeability shielding for wireless charging receiving coils
• Blocks charging flux from sensitive components or batteries
• High saturation powdered iron - not affected by permanent locating magnets
• Durable construction

 

 

SHIELD MATERIAL CHARACTERISTICS


• Permeability: approximately 24
• Resistivity: > 10 MW at 100 V
• Core loss: 4000 mW/cc at 500 gauss, 250 kHz
• Magnetic saturation: 50 % at 4000 gauss (to 350 Oe)

 

 

Introduction


There are many battery-powered devices, which need to be periodically charged, such as mobile phones, tablets, and battery-powered hand tools. These tools are usually charged by a dedicated cord from a USB port or from a dedicated wall adapter.


Wirelessly transferred power simplifies the charging of these devices and brings more convenience to the everyday lives of our customers. Dedicated controllers are required for wireless charging application control. Freescale provides the Axx family of the dedicated controllers for the wireless charging applications. Each type is intended for a certain range of applications in the automotive or industrial and consumer area. Freescale provides the dedicated wireless charging software library
intended for these controllers. This library maintains all functions required by the Qi specification.

 

 

Coil categories


Each application area requires a certain level of power transfer. The main aspects of the categorization are
as follows:


· Transmitter or receiver side:
o The transmitter side generates the power electromagnetic field.
o The receiver side produces the AC/DC current when placed to the power electromagnetic field.


· A level of the transferred power:
o Low power – up to 5 W on the receiver side
o Medium power – from 5 W to 100 W
o High power – from 100 W to 1 kW level
o Very high power – more than 1 kW


· Free-positioning:
o Single coil – with or without an attractor
o Multicoil solution


· Manufacturing:
o Wire wound from the Litz wire
o PCB type of coils

 

 

Coil description and properties

 

The requirements for the coil construction are as follows:

 The inductance and power capability must meet the category requirements, including the working frequency and transferring power.

 The mechanical dimension must fit to the target application, including the coil area and thickness.

 The coil must provide the electromagnetic shielding for the associated electronic device, such as the mobile phone.

 Durable construction.

 

Figure 1 shows the basic wire wound coil structure

 

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

Figure 1 Wire wound coil structure (property of TDK)

 

The coil winding can be one or two layers of the Litz wire. The adhesive tape between coil and ferrite
sheet maintains the required distance and the mechanical fixation. The center positioned magnet can be
used to provide better alignment between the transmitter and the receiver coils. The ferrite sheet provides
the one side magnetic shield and forms the magnetic field. The ferrite properties (material and thickness)
have influence to the maximal power transfer for the certain temperature rise.
For the power level 5 W and higher, usually various types of the ferrite material are used. For the power
level lower than 5 W, the thin ferrite tape or other soft magnetic materials could be used. The thickness of
the magnetic shield is from 0.5 mm to 5 mm depending on the type of coil.

 

A coil has the following properties:


· Inductance ranging from 6 uH to 27 uH.
· The DC resistance depends mainly on the used type of the Litz wire, usually ranging from 20 mΩ to 100 mΩ.
· The dimension depends on the required power transfer capability and the final application, usually ranging from about 30 mm to 55 mm for the rectangular and the circular single coil.
· The working frequency ranges from 105 kHz to 210 kHz for the devices which meet the Qi specification.
· The working voltage is from 5 V to 50 V in extreme conditions.

 

Figure 2 shows the examples of the wire wound coils.

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

                                           Figure 2 Wire wound coils(property of TDK)

 

Figure 3 shows the basic PCB coil structure.

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

Figure 3 Cross section of the PCB coils system

 

PCB coils consist of several layers of overlapped coils. All coils are independent and have their own connection points. The coil shapes can vary from the rounded square to hexagonal or circular. The PCB coils usually have higher internal DC resistance, lower quality, lower efficiency, lower thickness, and lower cost. They can be combined with wire wound coils.

 

A Multicoil solution A multicoil solution is used when the free positioning design is required. The transmitter checks each coil coupling to the receiver, and then selects the coil with the best coupling for the power transfer. It can energize one coil only or several coils together. The simultaneously energized coils can provide higher power transfer capability and larger freedom for the receiver coil placement. The simultaneously energized coils are connected to the same AC current source with the same electromagnetic field orientation. The connection can be maintained by the power multiplexer or the separate power drivers can be used for each coil. This type of the power transfer, called as one channel transfer, is intended for one receiver only. If you need to charge two or more devices simultaneously, you need to use the multichannel topology. In this case, each channel works independently. The example of the multicoil design is the Freescale Wireless Charger for automotive sector, topology A13_Rev2. It is controlled by the WCT1001A controller. The final demo example is shown in Figure 4.

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

Figure 4 Multicoil design example

 

Figure 5 shows the block schematic of the power multiplexer.

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

The multiplexer is controlled by the wireless charging controller and it can connect one or more coils from the three-coil set to the energy source. The power multiplexer can be spread to more segments to control multicoil. Then one or more coils can be energized simultaneously. This design can be used for all multicoil topologies by the Qi specification.

 

Figure 6 shows the next possible topology for the multicoil system.

Customized Power Wireless Charger Coil 7uH 5V Transmitter Receiver Induction Shield For Samsung Apple Smart Mobile Phone

                              Figure 6 Independent bridge drivers

 

This topology uses several bridge drivers to energize each coil. The half or full-bridges are controlled by the wireless charging controller. It is possible to energize one or more coils simultaneously. The selection of the final topology depends on the transferring power level and finally on the cost. If a design requires the EMI filter and small frequency range (automotive sector), the multiplexer can be a better selection.

 

 

Conclusion

 

The use of the A or other controllers from the A family, together with the binary wireless charging library considerably simplifies the whole design process and provides fully tested functions for a reliable application.

 

Contact Details
Aolittel Technology Co.,Ltd

Contact Person: eric.lye

Send your inquiry directly to us (0 / 3000)

Auto Blade Fuse

ISO8820-3 Standard BFMN-1225 Automotive Car ATM Mini Blade Fuse 25A 32V Natural 11mm For In-line Fuse Holder Adapter

Generic High Current Auto Blade Fuse ANL Automotive Bolt On Fuse 32V 20A-500A For Lift Trucks Car Audio Battery

Low Back Profile Micro Auto Car Mini Blade Fuse 30A 58V Green For Infiniti Subaru Acura Mazda Automotive

DIN72581 Standard GBC Zinc Alloy Bakelite 6x24mm European Auto Fuse 32VDC 5A-40A For EU Automotive Car Auto Blade Fuses

Auto Fuse Holder

Customized Mini ATM APM Auto Blade Fuse Holder Add-a-circuit Fuse Adapter 32V For Japanese Car Truck Motorcycle SUV DIY

Red Wire Black Plastic Square Shell Cap Wired Inline Auto Fuse Holder Box MT205 For Mini Car Blade Fuse

20A PCB Vertical Mount Car Fuse Holder Block Spring Brass Fuse Clip For 19mm Automotive Standard ATC ATO Auto Blade Fuse

Standard PCB Mount Quick Insert Nylon Stackable Medium ATC ATO Auto Fuse Holder Block For Plug-in Automotive Fuse 1A-30A

Surface Mount Fuse

Littelfuse 0476 Replacement 6125 2410 1808 Wire In Air Time Delay Suface Mount Fuse 250V 2A Slow Blow Lead Gold Plated

Littelfuse 467 Series Cross 0603 Size Thin Film Very Fast-Acting Surface Mount Fuses With Rating 250mA-8A 63VDC 32VDC

Sartfuse S1032-F Cross NANO 10.25x3.2 mm R1032 Series High Current Fast-Acting Surface Mount Fuse 250Vac 50mA-15A

Bourns SF-0603SP200-2 Cross 1608 Metric SMD SingleFuse Slow Blow Surface Mount Fuse 2A 32VDC For Overcurrent Protection

Request A Quote

E-Mail | Sitemap

China Good Quality Auto Blade Fuse Supplier. Copyright © 2018 - 2019 aolittel.com. All Rights Reserved.