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.
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.