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發(fā)射
產(chǎn)品名稱(chēng)：OPS1033 15W Wireless Power Transmitter SOC
型號(hào)： OPS1033
產(chǎn)片介紹：The OPS1033 supports internal voltage, current, temperature detection and abnormal protection External NTC protection can be used to ensure chip charging safety Two LED outputs are used to indicate charging status and abnormal protection FOD sensitivity can be programmed according to user’s requirement
產(chǎn)片介紹：The OPS1033 supports internal voltage, current, temperature detection and abnormal protection External NTC protection can be used to ensure chip charging safety Two LED outputs are used to indicate charging status and abnormal protection FOD sensitivity can be programmed according to user’s requirement
┄┄┄詳細(xì)介紹┄┄┄
Description
The OPS1033 is a highly integrated, magnetic induction, wireless power transmitter supporting the WPC1.3 specifications. The product is designed to operate with a wide input supply voltage range of 4.5V to 20V. The system-on-chip device is comprised of a step-down switching regulator, linear regulators, a microcontroller, Q factor detector，voltage and current ASK decoders, Two-Half bridge power stages drivers and 4-power MOSFETs.
The OPS1033 support PD 3.0 protocol for PD adapter, which can be adjusted the input supply voltage. And support Qualcomm Quick Charge technology when using a QC2.0 or QC3.0 power adaptor.
The OPS1033 includes an industry-leading 32-bit MCU processor offering a high level of programmability while consuming extremely low standby power less than 10uA. It can provide Automatic wake up function with the ability which can calculate Q factor under battery voltage. OPS1033 has excellent thermal performance due to high efficiency driver and integrated MOSFET low Rdson. In addition, the microcontroller empowers the user to customize features such as LED patterns, buzzer, and FOD threshold settings. The SWD or I2C serial communication allows the user to read information such as voltage, current, frequency, and fault conditions.
The OPS1033 includes an under-voltage lockout and thermal management circuit to safeguard the device under fault conditions. Together with the Crechip OPS1121A/B, the OPS1033 offers a complete wireless power system solution.
The OPS1033 is available in a lead-free, space-saving QFN34-5x5x0.75mm package. The product is rated for a -40ºC to +85ºC operating temperature range.
Features
● WPC1.3 compliant, flexible coil configuration
● Wide input voltage range: 4.5V to 20V
● Efficient 5W/7.5W/10W/15W/20W power transfer with typical 85% efficiency at 10W output
● Supports quick charging power adaptors of USB PD3.0, QC 2.0/3.0 etc.
● Integrated step-down switching regulator, linear regulator, 2-half bridge drivers and 4-power
MOSFETs
● Low standby power consumption (<10uA)
● Dedicated remote temperature sensing(NTC)
● Supports 127.7KHz fixed frequency and voltage tuning by PD3.0 protocols or off-chip DCDC
● Supports WPC EPP Q detection or advanced proprietary Q detection with programmable
FOD sensitivity
● Embedded 32bit core microprocessor
● Supports over-voltage, over-current, over-temperature detection and protection
● Supports I2C interface for program/debug/control
● User-programmable power transfer LED indicators
● 5mm x 5mm x0.75mm, pitch 0.4mm, QFN 34pin package
Typical Applications
● BPP and EPP Wireless Charging Pads
● Up to 7.5W/15W/20W charging for iPhones
● After-Market Automotive Wireless Charging
● Portable Instruments/ Electronic Equipment
● Charging Cradles
Description for Implementation
1. Overview and function
Figure 1 is the function block diagram of OPS1033 which is compliant with QI 1.3 and supports
5W/7.5W/10W/15W/20W transmission power. The efficient buck can work stably with input voltage from 4.5V to 20V and be bypassed when it is below the working voltage. It can automatically change the PFM and PWM modulation according to the load condition which can get best efficiency in different conditions.
The OPS1033 high voltage drivers change DC power to AC power with integrated MOSFETs.
Each PWM’s frequency and duty cycle can be configured independently from 110KHz to 200KHz frequency output. High resolution PLL can realize 1Hz frequency step and 0.1% duty PWM resolution. Q factor detector is the key feature which can realize the object detection, FOD detection and low standby power operation.
The Chip realizes the communication with the receiver through ASK and FSK modulation. It supports voltage and current ASK demodulation without any external active device. The patented demodulation algorithm can ensure the charging stability under various interferences and different positions. The high speed PWM clock guarantees that the difference between FSK reference frequency and modulation frequency conforms to QI EPP standard.
The OPS1033 supports internal voltage, current, temperature detection and abnormal protection. External NTC protection can be used to ensure chip charging safety. Two LED outputs are used to indicate charging status and abnormal protection. FOD sensitivity can be programmed according to user’s requirement.
