© Powercast Products | May 21, 2018
Powerharvester wireless power receiver charges smart cards over the air
Powercast Corporation, the pioneer of radio-frequency (RF)-based long-range power-over-distance wireless charging technology, today announced a smaller Powerharvester® wireless power receiver and RF-to-DC converter chip (PCC114) for its Powerharvester Chipset (comprised of a wireless power receiver chip and complementary boost converter IC).
This is a product release announcement by Powercast. The issuer is solely responsible for its content.
Designed for embedding in space-constrained consumer designs like smart cards or hearing aids, the new chip builds on Powercast’s existing Powerharvester receiver (PCC110), which has been deployed in industrial and commercial wireless power systems for seven years. Powercast used that experience to refine and reduce the size of its technology specifically for the consumer market. The new PCC114 receiver chip’s footprint (1mm x 0.6mm x 0.3mm) is seven times smaller than the existing PCC110 (2mm x 2.1mm x 0.9mm) and has 20 times less volume, facilitating the design of ultra-compact, wirelessly-powered devices. How Powercast’s patented remote wireless power technology works: A Powerharvester receiver (PCC114 or PCC110) embedded in a device harvests the RF energy sent over the air from either an “intentional” or “anticipated” RF source, then converts it to DC to directly power a batteryless device or recharge a device’s batteries. An intentional RF source is an RF transmitter in the home, office, public place or industrial setting, like Powercast’s new FCC-approved PowerSpot® far field (up to 80 feet) transmitter. It creates a coverage area much like Wi-Fi and automatically charges enabled devices over the air when in range. Manufacturers can use the PowerSpot either in its standalone form or its subassembly for quick integration into their own products, or they can license Powercast’s technology and design their own RF transmitter. PowerSpot tops off devices left on a countertop overnight in its charging zone, which varies with device type and power consumption. For example, power-hungry, heavily used devices like hearing aids, ear buds, game controllers, smart watches, fitness bands or headphones charge best up to two feet away; keyboards and mice up to six feet away; smart cards and TV remotes up to 10 feet away; and low-power devices like home automation sensors up to 80 feet away. Audible or visual alerts indicate when devices move in and out of the charge zone. Anticipated RF sources, such as UHF (ultra-high frequency) RFID inventory readers or NFC (near field communications) POS readers, could charge devices at the interaction point. The Powerharvester chip can harvest energy from the RF source at close range (centimeters for NFC or a few meters for UHF RFID) to power the device and enable contactless payment, ticketing, or data-change transactions. For example, using a typical RFID reader, Powercast’s Batteryless UHF Retail Price Tag can be changed electronically from two meters (6.5 feet) away, and its Multi-Sensor RFID Tags can be powered and read from ten meters (32 feet) away. Wirelessly-powered smart cards are smarter, more feature-rich: Wireless power harvesting enables smart cards that can be recharged while in use, so they offer power-hungry features without running out of juice. Examples include, advanced security components like a fingerprint sensor, ePaper displays that retain data like balances or one-time PINs even when outside the power field, and hotel door access cards, loyalty/gift cards, or subway passes that become reusable/reloadable. Powerharvester chip specifics: Operating across a wide RF power (-17 to +20dBm) and frequency (10MHz to 6GHz) range, the new Powerharvester PCC114 converts RF to DC with up to 75 percent efficiency, harvests from all modulation types, works with standard 50-ohm antennas and is RoHS compliant. The company expects consumer designs using this new chip to be shipping in 12 to 18 months. This chip is sold and supported directly from Powercast. Powercast will also continue to market its existing Powerharvester PCC110 chip (SC-70 package) for less space-constrained designs. The Powerharvester Chipset also includes the existing, complementary PCC210 boost converter IC, which works with both (PCC114 and PCC110) Powerharvester wireless power receiver chips. This PCC210 comes in a SOT23-6 package, can work with inputs down to 0.4V, is capable of 5.5V at 50mA, and offers resistor-programmable output voltage. Reference designs are available, and include schematics, PCB layout, bill of materials and performance data. For more information: http://www.powercastco.com/products/powerharvester-receivers/
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