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BQ50002ARHBR Datasheet(PDF) 1 Page - Texas Instruments |
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BQ50002ARHBR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page Power (W) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5% 10% 15% 20% 25% 30% 35% 40% 45% 50% 55% 60% 65% 70% 75% 80% D001 bq50002A bq500511A TRANSMITTER RECEIVER Rectification Voltage Conditioning Load Controller bq51k Communication Power 5 V Input 3 V PWM Control Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. bq50002A SLUSCP1A – AUGUST 2016 – REVISED AUGUST 2016 bq50002A Low-Cost 5-V Wireless Power Transmitter Analog Front End for WPC v1.2 A11 Transmitters 1 1 Features 1 • 5-V Transmitter AFE Compatible With Wireless Power Consortium (WPC) v1.2 A11 Low-Power Transmitter Specification • Designed to be Used With bq500511A WPC Controller – Note: The bq50002A is Incompatible With the bq500511 Device if Foreign Object Detection is Required • Suitable for WPC and Proprietary 5-V Wireless Power Transmitters • Supports 5 W on the Receiver Output • Integrates All the Analog Functions Required in a Wireless Power Transmitter – MOSFET Drivers and Synchronous N-Channel Power FETs – Accurate Current Sense – Variable Frequency Oscillator – High-Efficiency Voltage Regulator – High-Sensitivity Demodulator to Decode Signals From Receiver • 2-Chip Solution Enables High-Efficiency Transmitter Designs of >75% Efficiency • Ultra-Low-Standby Power, Even During Digital Ping (<30 mW) • Dynamic Power Limiting (DPL)™ Enables Operation From Input Sources With Limited Power • System LED Indication of Charging State and Fault Status • Accurate Foreign Object Detection Method (FOD) 2 Applications • WPC Compliant Wireless Transmitters for Smart Phones and Wearable Applications • Proprietary Wireless Chargers and Transmitters • Medical and Wearable Applications 3 Description The bq50002A device is a highly integrated wireless power transmitter analog front end (AFE) that contains all of the analog components required to implement a Wireless Power Consortium (WPC) compliant 5-V transmitter. The bq50002A device integrates a full-bridge power driver with MOSFETs, variable-frequency oscillator, two-channel communication demodulator, linear regulator, and protection circuits. The bq50002A device must be used together with the digital controller bq500511A to realize a compact two chip wireless power transmitter solution. The bq500511A safely engages the RX device, receives packet communication from the powered device, and manages the power transfer according to WPC v1.2 specification. The system supports foreign object detection (FOD) by continuously monitoring the amount of power transferred and comparing that to the amount of received power, as reported by the receiver. This protects against power loss to metal objects misplaced in the wireless power transfer field. To do this, the bq50002A measures the input DC current accurately by using a current sense amplifier. Should any abnormal condition develop during power transfer, the bq500511A handles it and provides indication outputs. Comprehensive status and fault monitoring features enable a low cost yet robust WPC-certified wireless power system design. The bq50002A is available in a thermally enhanced 5.00 mm × 5.00 mm, 32-pin QFN package. Device Information (1) PART NUMBER PACKAGE BODY SIZE (NOM) bq50002A QFN (32) 5.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic Efficiency vs Power |
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