MIKROE-2799

MIKROE-2799 Datasheet

PID MIKROE-2799

Part	Datasheet
MIKROE-2799	MIKROE-2799 (pdf)

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Qi Receiver click PID MIKROE-2799 Weight 28 g Harvest energy wirelessly Qi Receiver click is based on the P9025AC 5W Qi wireless power receiver integrated circuit, with the advanced Foreign Object Detection FOD feature, from IDT. The click utilizes the principles of the inductive coupling for the purpose of wireless power transfer. Recently, the WPS Qi wireless power transfer standard is becoming widely used, for example - wireless charging of the batteries on many Qi wireless power charging compliant devices. Qi Receiver click is well-suited for a wide range of applications, including cell phones, tablets, PC peripherals, medical devices, small hand-held devices, in robotics, embedded electronics, etc. Note Qi Receiver click has to be placed near the suitable Qi Transmitter, also known as the charging pad, to successfully harvest the transmitted power. Quick start guide Follow these simple steps to power-up and begin using Qi Receiver click: Place the Qi Receiver click so that the inductive coil is facing down, towards the transmitter. Verify that the STAT LED is illuminated power is being transferred. Connect the load to the output pads. How the Qi Receiver click works The click utilizes the effects of the electromagnetic induction to wirelessly transfer energy, a phenomenon in which the electromotive force i.e. voltage is generated across the electrical conductor, under the influence of a variable magnetic field. It uses the planar copper coil as an inductive element. Qi Receiver click relies on the wireless power transfer standard, developed by the Wireless Power Consortium, to both provide and monitor current and voltage. This standard involves digital communication, used to transmit the information back to the charging pad. Depending on the received information packets, charging pad regulates the strength of the variable magnetic field, which in return generates more or less power on the receiver coil. When Qi Receiver click is placed on a WPS Qi compliant charging pad, it responds to the transmitter's "ping" signal, by rectifying the AC power from the transmitter and storing it on a capacitor connected to the VRECT. During the "ping" phase, the rectifier provides about 5V at the VRECT pin. An internal linear voltage regulator provides the supply voltage for the digital section of the P9025AC, enabling the Qi protocol communication, so that the receiver can synchronize with the charging pad. After the initial synchronization, the system enters the Power Transfer state and the actual power transfer process is started, which is indicated by the Status LED. The voltage on the output connector of the Qi Receiver click is kept constant and it’s 5.3V, so the eventual voltage drops under a heavy load are accounted for. Since the P9025AC can withstand up to 5W, it should be able to deliver up to 1A of current, on the output header VOUT. One special feature of this device is the possibility to detect foreign metal objects in its field. The presence of the foreign metallic objects in the charging field can be unwanted - even dangerous. When found in the alternating magnetic field, the metal object can be heated up by the eddy currents that are generated inside of it. Also, this heat can be translated into a power loss, which can be especially problematic if the object is actually a part of the power harvesting device. To overcome this problem, the P9025AC employs advanced FOD techniques to both accurately measure its received power, and to accurately compensate all of its known losses. This compensation is implemented by means of a curve fitting table. This table supports up to 10 different curves stored in OTP One Time Programmable memory and one volatile memory location, programmed by the I2C bus. Additionally, the selected fitting curve can be offset by 300mW, by the means of a resistor connected to the FOD2 pin, so even better power adaptation can be achieved. The click also features the overvoltage, overcurrent and thermal shutdown. If any of these conditions occur on the output terminal, the LDO gets shut down and the End of Power packet is sent, so the charging pad also stops transmitting the power. Additionally, an interrupt can be generated on the INT pin of the Proximity 3 click. Note This device can’t be used to charge the batteries on its own. It can be coupled with the specialized battery charging circuitry, as for example Charger click so that the harvested power can be used for battery charging, too. Specifications modules P9025AC 5W Qi wireless power receiver Interface GPIO,I2C Input Voltage 3.3V or 5V Click board size L x mm Pinout diagram This table shows how the pinout on Qi Receiver click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns . Notes Notes input TEOP 1 AN PWM 16 Enable EN 2 RST INT 15 END of charge input pin Interrupt output Status output Power supply Ground ST 3 CS TX 14 NC 4 SCK RX 13 NC 5 MISO SCL 12 SCL NC 6 MOSI SDA 11 SDA 3.3V 7 3.3V 5V 10 5V GND 8 GND 9 GND I2C clock I2C data Power supply Ground END pin - End of charge input pin. Used to terminate power transfer - active high. INT pin - Interrupt output. Open drain output pin - requires a pullup resistor. TEOP pin - Over-temperature input pin. Used to terminate power transfer - active high. ST pin - Status output. A logic low state indicates that power is being transferred. Qi Receiver click maximum ratings Min Typ Max Unit Regulated output voltage Output current limit Operation junction temperature 0 125 °C

PDF Datasheet Preview

Qi Receiver click

PID MIKROE-2799

Weight 28 g

Harvest energy wirelessly

Qi Receiver click is based on the P9025AC 5W Qi wireless power receiver integrated circuit, with the advanced Foreign Object Detection FOD feature, from IDT. The click utilizes the principles of the inductive coupling for the purpose of wireless power transfer. Recently, the WPS Qi wireless power transfer standard is becoming widely used, for example - wireless charging of the batteries on many Qi wireless power charging compliant devices.

Qi Receiver click is well-suited for a wide range of applications, including cell phones, tablets, PC peripherals, medical devices, small hand-held devices, in robotics, embedded electronics, etc.

Note Qi Receiver click has to be placed near the suitable Qi Transmitter, also known as the charging pad, to successfully harvest the transmitted power.

Quick start guide Follow these simple steps to power-up and begin using Qi Receiver click:

Place the Qi Receiver click so that the inductive coil is facing down, towards the transmitter. Verify that the STAT LED is illuminated power is being transferred. Connect the load to the output pads.

How the Qi Receiver click works The click utilizes the effects of the electromagnetic induction to wirelessly transfer energy, a phenomenon in which the electromotive force i.e. voltage is generated across the electrical conductor, under the influence of a variable magnetic field. It uses the planar copper coil as an inductive element.

Qi Receiver click relies on the wireless power transfer standard, developed by the Wireless Power Consortium, to both provide and monitor current and voltage. This standard involves digital communication, used to transmit the information back to the charging pad. Depending on the received information packets, charging pad regulates the strength of the variable magnetic field, which in return generates more or less power on the receiver coil. When Qi Receiver click is placed on a WPS Qi compliant charging pad, it responds to the transmitter's "ping" signal, by rectifying the AC power from the transmitter and storing it on a capacitor connected to the VRECT. During the "ping" phase, the rectifier provides about 5V at the VRECT pin. An internal linear voltage regulator provides the supply voltage for the digital section of the P9025AC, enabling the Qi protocol communication, so that the receiver can synchronize with the charging pad. After the initial synchronization, the system enters the Power Transfer state and the actual power transfer process is started, which is indicated by the Status LED. The voltage on the output connector of the Qi Receiver click is kept constant and it’s 5.3V, so the eventual voltage drops under a heavy load are accounted for. Since the P9025AC can withstand up to 5W, it should be able to deliver up to 1A of current, on the output header VOUT.

One special feature of this device is the possibility to detect foreign metal objects in its field. The presence of the foreign metallic objects in the charging field can be unwanted - even dangerous. When found in the alternating magnetic field, the metal object can be heated up by the eddy currents that are generated inside of it. Also, this heat can be translated into a power loss, which can be especially problematic if the object is actually a part of the power harvesting device.

To overcome this problem, the P9025AC employs advanced FOD techniques to both accurately measure its received power, and to accurately compensate all of its known losses. This compensation is implemented by means of a curve fitting table. This table supports up to 10 different curves stored in OTP One Time Programmable memory and one volatile memory location, programmed by the I2C bus. Additionally, the selected fitting curve can be offset by 300mW, by the means of a resistor connected to the FOD2 pin, so even better power adaptation can be achieved.

The click also features the overvoltage, overcurrent and thermal shutdown. If any of these conditions occur on the output terminal, the LDO gets shut down and the End of Power packet is sent, so the charging pad also stops transmitting the power. Additionally, an interrupt can be generated on the INT pin of the Proximity 3 click.

Note This device can’t be used to charge the batteries on its own. It can be coupled with the specialized battery charging circuitry, as for example Charger click so that the harvested power can be used for battery charging, too.

Specifications
modules P9025AC 5W Qi wireless power receiver

Interface

GPIO,I2C

Input Voltage 3.3V or 5V

Click board size L x mm

Pinout diagram

This table shows how the pinout on Qi Receiver click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns .

Notes

Notes
input TEOP 1 AN PWM 16

Enable

EN 2 RST INT 15

END of charge input pin

Interrupt output

Status output

Power supply Ground

ST 3 CS TX 14 NC 4 SCK RX 13 NC 5 MISO SCL 12 SCL NC 6 MOSI SDA 11 SDA 3.3V 7 3.3V 5V 10 5V GND 8 GND 9 GND

I2C clock I2C data Power supply Ground

END pin - End of charge input pin. Used to terminate power transfer - active high. INT pin - Interrupt output. Open drain output pin - requires a pullup resistor. TEOP pin - Over-temperature input pin. Used to terminate power transfer - active high. ST pin - Status output. A logic low state indicates that power is being transferred.

Qi Receiver click maximum ratings

Min Typ Max Unit

Regulated output voltage

Output current limit

Operation junction temperature 0
125 °C

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Datasheet ID: MIKROE-2799 649436