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Wireless power transmitters support WPC, PMA standards

Posted: 21 Nov 2014     Print Version  Bookmark and Share

Keywords:P923x  wireless power  transmitter 

Integrated Device Technology, Inc. added a family of induction wireless power transmitters for wireless charging devices, promising greater flexibility and ease of use while reducing overall development cost.

The ultra-compact transmitters feature low electromagnetic interference (EMI) and high efficiency, making them ideal for a wide variety of applications, including wearables, smart phones and furniture.

The P9235 and P9236 transmitters are compliant with the latest Wireless Power Consortium (WPC) Qi standard, while the P9234 is a Power Matters Alliance (PMA)-compliant device. IDT also introduced a proprietary-mode device, the P9231, which operates at up to 1MHz of resonance frequency, allowing for a smaller coil. Completing the product offering is a dual-mode transmitter, the P9230, which supports WPC and PMA standards. Collectively, the P923x family addresses all of the various WPC low-power coil configurations.

Featuring an integrated 32bit ARM Cortex-M0 processor, the P923x family offers a high level of programmability and flexibility while consuming ultra-low standby power to meet Energy Star requirements. The transmitters span input voltages ranging from 4V to 21V and target applications with power requirements ranging from0.5W to 10W. The devices boast a level of integration that minimises the number of external components while reducing overall system cost.

Two devices are now available: the P9235, a full-bridge, single coil device, compliant with WPC A5/A11, QFN5X5-40; and the P9236, a half-bridge, single and multi-coil configuration, QFN6X6-48.

P9235 and P9236 transmitters

Block diagrams for P9235 and P9236. (Source: IDT)

IDT also released a synthesiser that features an integrated fanout buffer/divider, delivering 86fs RMS phase jitter over the standard 12kHz to 20MHz integration range for 40GE and 100GE telecommunications and networking systems. (See Clock synthesiser delivers 86fs RMS phase jitter)

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