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|• Wireless Charge A/D Flash 8-Bit MCU ( ❋ Items in this solution Δ Other related products )|
|Part Number||VDD||IO / ADC||TIMER||ROM/RAM/EEP||CLOCK||Interface||OTHERS||PACKAGE|
|❋||HT66FW2230||4.5V ~ 5.5V||21 / 12bitx8||2||42KW/128/64||HIRC/LIRC/HXT||I²C||OCP/DEM/Clock Gen.||28SSOP|
|• General Purpose OP Amplifier ( ❋ Items in this solution Δ Other related products )|
|Part Number||VDD||Description||OP No.||BW(Hz)||Current(μA)/OP||PACKAGE|
|Δ||HT9251||50μA, 550kHz Single OP amplifier||1||550K||50||SOT23-5|
|❋||HT9252||50μA, 550kHz Dual OP amplifier||2||550K||50||8DIP/SOP|
|Δ||HT9254||50μA, 550kHz Qual OP amplifier||4||550K||50||14DIP/SOP|
The expansion of wireless charging for a variety of mobile devices, has provided great improvements to charging convenience in everyday life. Directly aimed at the wireless charger application area, Holtek has a range of ASSP MCUs, which are specifically directed at WPC QI transmitter applications and used for related wireless charger applications.
For frequency control operation, which is a key feature of wireless power transmission, the Holtek wireless charger solutions include a high resolution frequency output, which is used to provide excellent power control output stability. The fully integrated power control current measurement and demodulation circuits simplify greatly any required external circuitry, resulting in lower costs and smaller circuit board areas. Their design offers full PID control functions which are required for the WPC QI standards, meeting all specification requirements.
This reference design provides a block diagram, application circuits, PCB, component list and other technical information. To learn more about the competitive advantages of Holtek’s wireless charger solution, click on “Learn more about our solutions”.
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System Architecture and Connection Diagram
This application solution reference design meets with WPC QI certification. It also includes a high-resolution output with a full range of frequency, integrated power module, current measurement circuit, full-bridge resonant circuit and demodulation circuit.
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