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[网友心声] Verizon Releases the World’s First EPP Certified 15W Wireless Charger

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发表于 2018-10-19 12:21:35 | 显示全部楼层 |阅读模式
Verizon, the second largest telecom company in the United States, introduced a wireless charger pad that features the popular Type-C input.  The CCG2 CYPD2122 controller enables a wireless power transfer via internal conversion. The wireless charger pad powers up any Qi-compatible devices, including Samsung’s fast charging phones. This is the world’s first certified EPP Qi multi-coil 15W charger.
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You can charge your phone horizontally or vertically with his Verizon charger.
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The base has a slight tilt to allow users to see the screen easily when the phone is being charged.
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The charger pad comes with a layer of non-slip rubber coating. It’s good that the charger won’t slip, but the coating does attract dust.
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Though the charger is rectangular, the base is circular.
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LED light indicator.
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According to the official website, this charger supports Samsung ‘s fast charging devices.
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You can see the screws after removing the anti-slip pad.
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There are two circuit boards underneath.
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Input terminal board.
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The front panel is locked in place with buckles. You have to loosen the two longest screws on the base panel first to open it.
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A close-up of the buckle lock.
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There’s a total of eight coil; the upper four coils are responsible for the identification of foreign objects and the lower four coils are responsible for charging.
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LED light guide plate.
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The front and back of the circuit board.
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The left one is the LED light guide plate, the middle is the main circuit board, and the right is the input board power control.
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The back of the circuit is clean and organized with a piece of insulation tape to protect it.
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The metal plate under the charging coils is responsible for the ferrite’s protection.
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There are four nicely arranged coils to identify any foreign bodies .
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A close-up of the front of the PCB, there are six 1210 NPO capacitors.
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The solder joint of the charge coil and the coil to identify foreign objects.
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LED indicator board. The LED with shade treatments.
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The insulated USB Type-C port.
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USB Type-C Controller chip CYPD2122 is used for power delivery.
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Diodes AP2204k-3.3 is used for CYDP2122 power supply.
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AON7409 Input switch MOS.
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A common mode filter.
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Input filter capacitor, AISHI electrolytic capacitor.
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Specifications 25V330μF.
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There is a patch resistor on the side.
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The six NPO capacitors are divided into two groups.
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There is also a common-mode inductor on the power board.
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Copper inductance offers a high conversion efficiency at low temperature.
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The detector on the coil to identify foreign bodies.
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The driver circuit is indicated by the red outlines.
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AON2420 driver circuit MOS.
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Buck-boost switch, Toshiba TPN11003NL.
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Next to the coil is the TL331, a single comparator.
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MOSFET Dual transistor driver. Avery small TI TPS62173 5V output synchronous switch step-down.
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Siyin CP-SC2 chip is the core of the wireless charging pad. It’s a single-input power management chip that is specifically designed for wireless charging applications. Through the serial bus, CP-SC2 can communicate with the external MCU to obtain information to drive the battery charging chip. The integrated power tube directly drives the external power switch while the chip has a built-in circuit detection. When over-current or over-voltage is detected, it will automatically turn off the power tube.
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ST STMicroelectronics STM8S005C6 microcontroller.
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发表于 2018-10-20 08:27:56 | 显示全部楼层
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