TI BQ51013ARHLT

The bq5101x is an integrated advanced receiver IC suitable for wireless power transfer in portable applications. This device not only provides AC/DC power conversion but also integrates the digital control functions required to comply with the Qi v1.0 communication protocol standard. When combined with the bq500210 transmitter controller, the bq5101x can implement a complete contactless power transfer system for wireless power solutions. By using near-field inductive power transfer, the receiver coil embedded in the portable device can receive the power emitted by the transmitter coil through mutually coupled inductors. The AC signal from the receiver coil is then rectified and regulated and can be used as the power supply for down-system electronics. Global feedback is established through a mechanism next to the transmitter to stabilize the power transfer process via backscatter modulation. This feedback is established by using the Qi v1.0 communication protocol that supports applications up to 5 W. The device integrates a low-impedance fully synchronous rectifier, a low-dropout regulator, digital control, and precise voltage and current loops. The entire power stage (rectifier and LDO) uses low-resistance NMOS FET technology to ensure high efficiency and low power dissipation.

• Integrated wireless power receiver solution supporting 5-V regulated output
• 93% overall peak AC-DC efficiency
• Fully synchronous rectifier
• WPC v1.0-compliant communication control
• Output voltage regulation
• Only IC required between RX coil and 5-V DC output voltage
• Dynamic rectifier control for improved load transient response
• Dynamic performance adjustment for optimized performance across all output power ranges
• Adaptive communication clamping for robust communication during high load current noise
• Supports 20-V maximum input
• Low power dissipation rectifier overvoltage clamp (V0VP = 15 V)
• Thermal shutdown
• Multifunctional NTC and control pin for temperature monitoring, charge completion, and fault host control
• Standalone digital controller
• Programmable termination pin for charge status 100% (CS100) support
• Available in 1.9×3mm wafer-level chip-scale package (DSBG) or 4.5×3.5mm QFN package

• WPC-compliant receiver
• Mobile phones and smartphones
• Headsets
• Digital cameras
• Portable media players
• Handheld devices