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Reference Solutions

A baseline for wireless charging

Wireless charging is gaining in popularity, with consumers taking to its convenience and ease of use. Devices can now be easily charged and ready to go without the need for power cords. A universal technology standard, Qi, has in fact been established by the Wireless Power Consortium. Widespread industry adoption means QI is now available in many locations where charging is most needed, like airports, automobiles, hotels and offices.

The Baselines Power Profile or BPP comprises the minimum set of features applying to power transmitters and power receivers that can transfer around 5W of power. These are compliant with Wireless Power Consortium standards for charging handphones, medical devices and wearable applications. To support this demand, Avnet offers a wide range of low charging solutions.  Our GDS customized solutions come with a customer support model that involves definition & requirement, development, certification and production.

IDT – Wearable Solutions

Features

Transmitter:

  • Supports Receiver for up 3W of power transfer.
  • Low standby power.
  • Integrated 32 bit ARM® Cortex®-M0 Processor.
  • Supports I2C interface for field programmability.
  • Active low enable pin for electrical on/off.
  • Over-Current and Over-Temperature protection.
  • Chip: 5mm*5mm, 40-VFQFN package.

Receiver:

  • Small solution area: ~32mm².
  • Optimized for 0.5 to 3 W applications.
  • Synchronous rectifier bridge with low Rds(ON) for high efficiency.
  • Programmable output voltage: 4.5 to 6.0 Vdc.
  • Programmable rectifier voltage for optimal efficiency.
  • Supports I2C communication.
  • Chip: 2.24mm*3.62mm, 40-WLCSP package.
Person controlling home thermostat with an iPad

 

Key Components

  • Transmitter: P9235A-R (IDT)
  • Receiver: P9027LP-R (IDT)
  • Coils: customer Design (AVNET Support)


Target applications

  • Wearable device

 

Person controlling home thermostat with an iPad

Mix media - IDT LP solution1-1

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IDT – Low Power Solution

Features

  • Single-chip WPC 1.2 Qi-compliant device for single-coil low-power transmitter.
  • Integrated, high-efficiency power stage with low Rds(ON).
  • Integrated FOD & current sense.
  • Excellent EMI performance eliminates need for EMI filter.
  • Supports up to 8W power transfer to the receiver.
  • Demodulates and Decodes Communication Packets from WPC-compliant Receivers.
  • I2C Interface for EEPROM access.
  • Programmable soft start.
  • Programmable input over-voltage protection.
  • Current limit and over-temperature protection.
  • Chip: 7mm*7 mm, 56-VFQFPN package.
Person controlling home thermostat with an iPad

Mix media - IDT LP solution1-2

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Key Components

  • Transmitter: P9038-R (IDT)
  • EEPROM: M24C64-RDW6TP (ST)
  • Coil: A11 coil


Target Applications

  • Standard low power transmitter.
  • WPC compliant wireless transmitters for smart phones, medical and wearable applications.

 

Person controlling home thermostat with an iPad

Mix media - IDT LP solution2-1

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IDT – Low Power Solution

Features

  • 5W WPC 1.2 Compliant wireless power transmitter single chip solution for TX-A6.
  • Excellent EMI performance eliminates need for EMI filters.
  • Demodulates and decodes WPC-compliant message packets.
  • Integrated RESET function.
  • Internal half-bridge power MOSFETs.
  • Integrated 5Vdc regulated DC/DC converter.
  • I2C Interface.
  • Push-Pull GPIO/LED indicator outputs.
  • Optional buzzer support.
  • Chip: 6mm*6mm, 48-TQFN package.
Person controlling home thermostat with an iPad

Mix media - IDT LP solution2-2

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Key Components

  • Transmitter: P9036B (IDT)
  • Switcher: SiR826ADP*3 (VISHAY)
  • Coil: A6 coil (Gotrend)


Target Applications

  • Standard low power transmitter.
  • WPC compliant wireless transmitters for smart phones, medical and wearable applications.
Person controlling home thermostat with an iPad