DATASHEET SEARCH SITE
Document overview
- Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 16
Technical content
V1.0 August 2016 Datasheet Ag320R
15 Watt Wireless Power Modules
© Silver Telecom 2016 Silvertel
1 Features
15 Watt proprietary wireless power receiver Output Power 15W @ 12V, 1.3A Low bit rate customer communication Size 28 mm x 18 mm x 6.7mm Output Overload & Short-circuit Protection Simple Integration
2 Description
The Ag320R is a 15 watt w ireless power receiver module ; designed to work with the Ag320T wireless power transmitter, typically used in wireless charging applications. With the i ncreased use of mobile & portable devices , the Ag320R & Ag320T wireless power modules offer a wide range of benefits: - There are no cables to get tangled and you don’t have the problem of having different plugs or sockets for various devices. There is no risk of electrical shock, as there are no exposed metal parts. Can be used in explosive environments as there are no contacts to cause sparks. This means that there is no contact degradation due to friction, corrosion or abrasion. The units can be completely sealed for use in harsh environments, as its operation is not affected by dirt, dust, water or ch emicals and can even be used underwater. Can be used in medical environment where disinfecting and sterilization is required. Has 3 times the power of stand ard Qi wireless power making it suitable for a wide range of higher power applications. PbPb
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
2.1 Table of Contents
2.2 Table of Figures
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
3 Ag320R Product Selector†
Part Number Input Voltage Output Voltage Maximum Output Current Type Ag320R 12V 1300mA Receiver † The Ag320R fully meets the requirements of the RoHS directive 2002/95/EC on the restriction of hazardous substances in electronic equipment. Table 1: Ordering Information Input Rectification and Comms Driver Output Control and Regulation Circuit Current Sense Ag320R Controller Internal Reference Tcut Charged +Vdc -Vdc External Load Ag320R Receive Coil SPI RX Comms flag SPI CLK Figure 1: Ag320R Block Diagram
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
4 Pin Description
4.1 Ag320R
1 +Vdc DC Output. This pin provides the regulated 12V output. 2 -Vdc DC Return. This pin is the return path for the +VDC output.
3 Charged
Charged (Input). This pin has a pull up in the module’s controller to an internal 3.3V reference rail. Pulling this input low will send a message to the transmitter to indicate battery is fully charged. 4 Tcut Tcut (Input). Pulling this input low, will stop the Ag320T transmitting power. This pin has an internal pull up to a +3.3V rail. 5 SPI RX SPI RX (Input). Limited transmission channel for customer data in SPI (Serial Peripheral Interface) format. 6 Comms flag Comms flag (Outputs). This pin indicates the status of the customer communications. 7 SPI Clk SPI Clk (Input). Clock input for communications channel. 8 NC 9 NC 10 NC C1 Coil (Input). This pin connects to one side of the receive coil. C2 Coil (Input). This pin connects to the other side of the receive coil. 14 15 NC
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules Top View Ag320R 10 11 Figure 2: Ag320R Package Format
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
5 Functional Description
5.1 Wireless Power Overview
When the Ag320T wireless transmitter is connected to a 12V supply, it will start up and will commence looking for an Ag320R wireless receiver in range. It does this by applying a short power signal to the transmit coil to detect an object. If an object is detected then this signal is extended, loo king for a Ping data message back from the receiver. If a valid Ping message is not received, the transmitter will remove the power signal and wait ~500ms before repeating the above process. If a valid “Ping” message is received , the power signal is main tained and the transmitter looks for the “Identification & Configuration” message and the “Power Transfer” message. If either the “Identification & Configuration” or the “Power Transfer” messages are invalid , the transmitter will remove the power signal a nd wait ~500ms before repeating the above steps. If the transmitter receives valid data, it will maintain and adjust the power signal in accordance with the data sent back from the receiver. Input Rectification and Comms Driver Output Control and Regulation Circuit Current Sense Ag320R Controller Internal Reference +Vdc -Vdc External Load Ag320R Output Driver and Comms Ag320T Controller Internal References Ag320T Comms Filter +Vin -Vin 12V Power Supply Wireless Transmitter Wireless Receiver Energy Data Current Sense Figure 3: Charger Overview
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
5.2 Coils and Alignment
The wireless power connection is established through transmit and receive coil s. For the Ag320R we recommend one of the following parts or an equivalent: - Manufacturer Part number Abracon Awcca-38r32h09-c01 Abracon Awcca-48r32h11-c01 Wurth Elektronik 760308103205 Wurth Elektronik 760308201 Wurth Elektronik 760308100141 The nominal alignment position of the coils is shown below in Figure 4 and 5. In Figure 4 you can see that the coils are separated by the transmitter and receiver enclosures. The Qi specification allows the transmitter enclosure thickness to be between 1.5mm to 2.25mm, and the receiver enclosure thickness to be between 0mm to 2.5mm. The Ag320T has been design ed to meet this specificatio n and the Ag320R is capable of operating well beyond the 2.5mm specification. To Transmitter Ag320T To Receiver Ag320R Receiver Enclosure Transmitter EnclosureTransmitter Coil Receiver Coil Figure 4: Horizontal View Figure 5: Vertical View
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
5.3 Control Inputs
The Ag320R has two optional control inputs: – Thermal Cut Off and Charged. Both of these inputs have pull -ups to an internal 3.3V reference. Th ey can be driven directly from a controller (of logic gate) that has a 3.3V rail, or via an external transistor if the external rail is not 3.3V (see Figure 8). It is important that if Figure 8 “Option A” is used, that the Controller outputs are tri-state or high at start -up. If this is an issue then “Option B ” may be a better solution. The two transistors do not need to be anything special and could both be in a dual package, if required. The resistors can be high values (100K Ω) and could be in a quad package if required. TCUT Ag320RController 3.3V Charged TCUT Ag320R Charged Controller Option A Option B Figure 8: Control Inputs
5.3.1 Thermal Cut Off
The Thermal Cut Off input (TCUT) can be used with an external circuit for battery protection. When this input is pulled low, the Ag320R will send an error message back to the Ag320T. It will power cycle twice to see if the error can be cleared, but if the error is still present after this, it will remain off and show an error code.
5.3.2 Charged
The Charged input ca n be used to send a message back to the transmitter when the battery is fully charged. When this input is pulled low, the Ag320R will send a message back to the Transmitter saying that the charge is complete.
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
5.4 Customer communications input
The Ag320R ha s an input for a low bit rate communications channel for the application use. The communications channel is 1 way from the Ag320R to Ag320T. The communication is transmitted over the power interface, using the same method as the power control data. This means the data rate is limited and varies depending on load variation. It has an approximate maximum of 4 bytes per second when the load is stable. The Ag320R interfaces with the customer’s application via 2 wire SPI (SPI clock and SPI Rx) and a communication status flag (Comms flag) pin. Once the Ag320R is ready to accept data the status flag will go HIGH. 1 byte can be transferred via the SPI to the Ag320R. Once received the communication status flag will go low. The byte of data will then be transmitted back to the Ag320T in the next available time slot. Once sent the communication status flag will return to HIGH to indicate the Ag320R is ready for the next byte of data. If extra bytes of data are transmitted when the Ag320R is not ready they may corrupt the original message or be lost. Figure 9: SPI input timing diagram The data format required for the SPI data as shown in figure 9 Is MSB first, positive clock polarity and sampling on the falling edge (second edge) of the clock signal. The maximum SPI clock speed is 1 Mbps. Note due to the speed of the processor of the Ag320R there is a delay between the complete transmission of a byte from the customer’s application and the Ag320R flag going low. The customer should ether monitor the flag going low and then back up or wait a minimum of 20uS before checking the communications status flag. Figure 10 shows an example program code for the users application to interface with the Ag320R communications channel. Contact Apps support if additional guidance is required.
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules Figure 10: Ag320R user application code example On the Ag320T end when a Byte has been received the byte is presented as an asynchronous serial byte at 9600 bps baud rate, as detailed in section 5.6 of the Ag320T datasheet.
6 Typical Connections
The Ag320R is very easy to implement, Figure 11 shows typical application drawing, giving a basic overview. Ag320R Receiver Enclosure Load CL1 CL2 Charge Controller Bat VDC+ VDC- TCUT Charged Therm Rx Coil +12V Q1a Q1b R1a R1b R1c R1d Figure 11: Typical Application Drawing
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
7 Typical Applications
The Ag320R can be used in a wide range of wireless power and charging applications and with the increased use of mobile & portable devices this list is expanding every day. At present one of the biggest market sectors for wireless charging are in mobile phones. But there are many more applications that can benefit from the advantages of wireless power transfer. Because there are no contacts to cause sparks, wireless charging can be used in environments where combustible materials or gases are present. Also as t he transmitter a nd receiver can be built into completely sealed enclosures ; they can be used in harsh environments, where dust, dirt, water or chemicals are present. On the other end of the spectrum, wireless power also lends itself for use in clean environments, where disinfecting and sterilization is required.
8 Operating Temperature
The Ag320R has to rectify and regulate the voltage received from the (Ag320T) transmitter. The losses incurred by these processes will result in the module generating heat and as a result this will need to be taken into consideration. The amount of heat generated by the module is primarily related to the current being drawn by the load. So care needs to be taken to control the ambient temperature around the module. The Ag320R has a maximum ambient operating temperature of 85 °C, as shown in Figure 12. These results were preformed in an environmental chamber (Associated Environmental Systems – SD-302), without any heat-sinking. The results shown in Figure 1 2 are relative to the output power drawn from an Ag3 20R receiver (powered by the Ag320T) with a nominal 4mm coil to coil spacing.
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules
9 Output Protection
9.1 Over Current Protection
The Ag320R output has an over current protection threshold set to ~ 1.5A. If the load attempt to draw > ~1. 5A it will disconnect the output and report an over current err or back to the transmitter.
9.2 Short Circuit Protection
The Ag320R output is capable of handling a direct short circuit without any damage to the module.
10.1 Absolute Maximum Ratings*
Parameter Symbol Min Max Units
1 Storage Temperature TS -40 + 100 °C
2 Control Inputs Maximum DC Rating VIN -0.3 3.5 V *Exceeding the above ratings may cause permanent damage to the product. Functional operation under these conditions is not implied. Maximum ratings assume free airflow.
10.2 Recommended Operating Conditions
Parameter Symbol Min Typ Max Units
1 Operating Temperature TOP -40 25 +85 † Ta / °C
2 Maximum Input Voltage (From Coil) VINC 20 Vp-p
†See Section 8
10.3 DC Electrical Characteristics*
DC Characteristic Sym Min Typ* Max Units Test Comments 1 Output Voltage VOUT 11.5 12 12.5 V @ 50% Load 2 Output Current IOUT 1.3 A 3 Over-Load Current IOL 1.5 A
4 Load Regulation VREG 2 %
5 Peak Efficiency EFF 72.3 % With Ag320T
6 Short Circuit Duration TSC ∞ sec
7 Minimum Load IMIN 0 mA
8 Output Ripple and Noise
(Minimum Load)1 VRN1 65 mVp-p
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules DC Characteristic Sym Min Typ* Max Units Test Comments
9 Output Ripple and Noise
(Maximum Load)1 VRN2 105 mVp-p
10 Maximum Start Up
Distance Between Coils DST 6.5 mm @ Full Load
11 Maximum Operating
Distance Between Coils DOP 6.5 mm @ Full Load
12 Control Inputs Logic Low
Voltage VIL 0.75 V
13 Control Inputs Logic
High Voltage VIH 2.25 V *Typical figures are at 25°C and are for design aid only. Not Guaranteed 1: This can be reduced with additional output capacitance or filter.
V1.0 August 2016 Datasheet © Silver Telecom 2016 Ag320R Wireless Power Modules 17.78 1.27 2.54 2.54 27.94 15.24 2.54 0.6 (Recommended PCB hole diameter = 1.1 ± 0.05) Dimensions (in mm) are nominal unless otherwise stated 2.543 1.6 2.5 MAX Information published in this datasheet is believed to be correct and accurate. Silver Telecom assumes no liability for error s which may occur or for liability otherwise a rising out of use of this information or infringement of patents which may occur as a result of such use. No license is granted by this document under patents owned by Silver Telecom or licensed from third parties by Silver Telecom . The products, their specification and information appearing in this document are subject to change by Silver Telecom without notice.