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Richtek Announces RT318xx Products Qualified as WPC Qi EPP Certified Wireless Power Receiver and Transmitter
Richtek is committed to the development of wireless charging solutions after the completion of the merger with MediaTek. Since 2016, Richtek has taken full ownership of all MediaTek's wireless power solution business including product development and strategic planning. In this issue, Richtek is proud to announce that both the RT3181A based MPA5 wireless power transmitter solution and the RT3180W based wireless power receiver solution are fully qualified as WPC Qi EPP (Extended Power Profile) Certified Products.
The WPC Qi standard has become a mature and widely adopted specification. Today’s power hungry mobile phones require higher charging power, so the EPP products with output power up to 15W have gradually gained in popularity in the growing wireless charging power market. In order to shorten time to market, Richtek WPC Qi EPP certified wireless modules can be directly placed into customer prototype designs. Unlike general testing evaluation boards with larger size optimized layouts, Richtek wireless modules are laid out in a tiny configuration which match small prototype dimensions, allowing quick prototype design without massive layout changes. The below pictures show examples of the actual applications.
RT3180W Wireless Power Receiver
in iPhone 6 Plus Sleeve
MPA5 Wireless Power Transmitter
RT3181A base
See more details on WPC website See more details on WPC website.
Since both BPP (Baseline Power Profile <5W) and EPP (Extended Power Profile 5W-15W) qualifications share the same logo, the only way to identify whether a WPC product is qualified as BPP or EPP is by checking the official WPC website. All Richtek WPC Qi EPP solutions are certified products so they are listed on the official WPC website. It is crucial to avoid any compatibility problems or confusion on products marked as ‘fast charging’ or ‘fast wireless charging’ which may only be BPP certified. Please search the WPC website and check the ‘power profile’ for EPP certification. The examples of RT3181 based MPA5 EPP TX and BPP A11 TX are shown below.
RT3181 MP Charger RT3181 LP Charger
In the booming wireless power market, we see an increasing demand on EPP (5W-15W) charging products but power dissipation is always a concern.
Therefore, 10W is a moderate specification for system design in MPA5 or MPA2 wireless transmitter base.

In terms of wireless power system efficiency, the RT3181A in MPA5 base performs better than other manufacturers in the range of 10W receiver output power. (Please see the diagram on the right side)
For more wireless product information, please access Richtek wireless power solution application page or contact us: wps@richtek.com
Want to know more about wireless charging?
Please watch the videos of Richtek presentations during IEEE 2017 Wireless Power Transfer conference in Taipei, Taiwan (May 12, 2017)
The Wireless Power is in Charging Wireless Power Circuit Design and Solutions
This talk covers the wireless power standard and market information. Two major wireless power standards, WPC and Airfuel Alliance are introduced. Some applications and RT3181 wireless power solutions are demonstrated as well. This talk covers the circuit design considerations and solutions for magnetic resonant and magnetic inductive wireless power transfer. Richtek RT3180 multi-mode RX solution and design examples are also discussed.
Upcoming event
Richtek at Wireless Power Taipei
(Grand Mayfull Hotel Taipei, Taiwan, Aug 31st – Sep 1st, 2017)
Richtek will host a talk to share our insights on wireless power solutions during the Qi developer conference (Aug 31st, 2017). We will also showcase a broad range of wireless power solutions including standard WPC transmitter/Receiver and medium power WPC modules in the wireless power tradeshow (Sep 1st, 2017). Please see this link for further information.
New Products
  RT6210 is a 500mA, 80Vin, 350kHz Synchronous Buck Converter in a SOP-8 package. Operating in 5.2V-80V wide input and 0.8V-72V programmable output, RT6210 features current mode control to simplify external compensation and pulse-skipping mode for enhanced light load efficiency. A great choice for industrial process control, metering, security systems, commercial vehicle power supplies, telecom system, etc.
⇒ Also see other wide Vin products: RT6204 60Vin Buck converter
  RT9468 is a 5A single cell Li-ion switching battery charger with Direct Charge, power path management and USB OTG Boost mode in a WQFN-32L 4x4 package. Targeted for space-limited portable applications, it integrates a Direct Charge function and complete protection functions. RT9468 has a single input operating from 3.9V-14V in adapter mode or 3.0V-7V in Direct Charge mode. The key charge parameters are programmable via I2C.
⇒ Get Free RT9468 Sample Now
⇒ Also see other switching battery chargers
  RT1711P is a USB Type-C and Power Delivery (PD) Port Controller in a WQFN-24L 3.5x3.5 package. Supporting USB PD3.0 and TCPC1.0, RT1711P integrates a complete Type-C transceiver providing cable recognition and orientation detection. It also integrates the physical layer of the USB BMC power delivery protocol, allowing up to100W of power transfer and role swap. Ideal for portable devices, monitors, TVs, power bank, etc.
⇒ Get Free RT1711P Sample Now
  RT1716 is a programmable USB Type-C PD Controller in a WL-CSP-8B 1.38x1.34 package. Supporting PD 3.0 except fast role swap function, RT1716 is dual-role PD compatible providing attach/detach detection and orientation. It provides the physical layer functionality of the USB-PD protocol suitable for portable devices.
  RT1730 is a programmable USB type-C Controller in a WL-CSP-9B 1.38x1.34 (BSC) package. With similar features to RT1716, RT1730 has an extra regulated input VCONN pin to power the IC within an electronically marked Type-C cable.
  RTQ2522A/B is an industrial grade bias rail LDO with 2A current capability, low 0.8V-5.5V input and 0.8V-3.6V output range and ultra-low dropout voltage in a WDFN-10L 3x3/WQFN-20L 5x5 package. Featuring High PSRR, Enable, PGOOD and programmable Soft-Start, RTQ2522A/B is capable of supplying 2A Iout with a low dropout voltage of 135mV. Ideal for industrial applications like Servers, FPGA, DSP Core and other post regulation applications.
⇒ Get Free RTQ2522A/B Sample Now
⇒ See LDO selection criteria
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