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Wireless Charging ICs

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Toshiba TB6865FG Power Transmitter and TB6860WBG Receiver for "Free Positioning" Wireless Charging of Mobile Phones

Fully compliant with the Wireless Power Consortium (WPC) Qi1 interface specification for 3.5-watt power transfer, the TB6865FG power transmitter represents the industry's first transmitter to use the WPC's Qi™ A4 transmitter technology for wireless charging and is now targeted for compliance for 5-watt power transfer.

This technology features a two-coil control architecture to enable battery charging with increased freedom to position a Qi-capable phone on the charging surface.

  • For enhanced design flexibility, the TB6865FG can manage the wireless charging of two devices simultaneously and achieves up to 74% efficiency across a majority of the charging area.
  • Toshiba's new chipset features high levels of integration to reduce component count, board space and cost in wireless charging applications.
  • The TB6865FG transmitter integrates both microcontroller and analog elements including PWM circuitry, switching control, on-board filter and a pre-driver circuit.
  • The TB6860WBG receiver combines modulation and control circuitry with a rectifier power pickup, built-in DC-DC converter and protection functions, and a programmable charging profile via I2C control.
  • The TB6860WBG integrated DC-DC converter provides for high-efficiency, high-current charging with a charge current of up to 0.95A.

 

1More than 125 businesses have joined the Wireless Power Consortium, formed in late 2008 to create a global charging standard called 'Qi' (pronounced "chee"). All products that implement Qi work together seamlessly, independent of manufacturer or brand.

 

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