In the past two years, electronic products such as mobile phones have developed rapidly, and charging protocols have also shown a diversified trend. At the same time, with the help of USB PD, the Type-C interface has basically occupied the dominant position in the market in just two years. Even the blue and green manufacturers have respectively released mobile phones with USB-C interfaces this year, and many brands have begun to introduce USB-C interfaces into low-end devices. The base number of USB-C devices has steadily increased, coupled with the original non-USB-C devices in the market, making multi-interface chargers a popular charging accessory, which is easy to use and easy to store. Recently, the charging head network got a three-port USB PD charger, the brand is Xinsibao, in the previous evaluation experience, all aspects of performance are very good, then today I will bring you the disassembly of this charger .
1、 Appearance of new spo three Port USB PD charger
This charger is white, with a common cuboid shape. The shell is made of PC material, and most of the area has been polished
The front of the charger is printed with the logo of xinspower: xinspower. There are three output interfaces on the left and American standard pins on the right. Xinsibao is a well-known charger foundry in the industry. The factory has a variety of product series, hundreds of different styles and multiple product production lines. It has close cooperative relations with major well-known brands all over the world.
The charger pin adopts a stowable design. Compared with the ordinary non stowable pin design, the occupied volume will be smaller and more convenient to carry.
In terms of output interface, the combination of two usb-a and one USB type-C is adopted. The top is two usb-a (SMART) interfaces and the bottom is USB type-C interface, which can basically adapt to all data lines on the market.
And the three ports can charge three devices at the same time.
The relevant parameters are at the bottom of the charger. The model of the charger is P301, and the input supports global voltage; The two usb-a ports support the maximum 5V / 2.4a output, and the USB type-C port supports 5V / 3a, 9V / 2a and 12V / 1.5A output. The total output power is 30W. In addition, the charger has passed UL certification, FCC certification and meets VI energy efficiency standard.
In terms of thickness, it is the same as the diameter of a dollar coin.
Use the chargerlab power-z kt001 test table to connect with the type-C port of the charger. It is measured that the interface supports USB PD2 0 protocol, and there are three output gears: 5V / 3a, 9V / 2a and 12V / 1.5A.
Usb-a port output supports apple 2.4a and usb-dcp 5V / 1.5A protocols.
The usb-a port charges the iPhone 7. The measured voltage of the usb-a port is 5.03v, the current is 1.01a and the power is 5.10w.
When charging the iPad air, the voltage is 5.13v, the current is 2.18a and the power is 11.24w.
When charging iPhone x with usb-c port, the voltage is 9.13v, the current is 1.56a and the power is 14.29w.
2、 Disassembly of new spo three Port USB PD charger
First pry off the charger housing
Pull out the internal PCB.
A large heat sink is covered on the transformer on the front of the PCB board.
On the back are power supply main control, rectifier bridge, MOS tube and other devices.
On the high voltage side, four electrolytic capacitors, thermistors, X capacitors, common mode inductors and fuses can be seen and fixed with glue.
The cable is used to connect the pin and PCB board, the cable solder joint is full and the contact is good.
A Y capacitor is seen on the side for anti-interference of two usb-a output interfaces.
On the other side of the PCB board, the usb-c port is welded on the small PCB board.
Remove the heat sink, you can see that this charger uses two transformers, two independent outputs, without interference with each other. A large copper heat sink ensures excellent heat dissipation performance.
The output terminal is equipped with 5 solid-state capacitors. Two 16V 470 μ F capacitor is responsible for usb-c port filtering, and the other three are responsible for usb-a output filtering. The specification is 6.3V 330 μ F。
The input terminal is equipped with five ACON meso electrolytic capacitors, four of which are large-volume 400V 15 μ F。 The specification of small volume is 50V 10 μ F。
After removing the input capacitor, you can see a primary main switch tube, which is responsible for the usb-a dual port output.
Primary main switch tube of usb-a port, 4n60c.
Remove the transformer of usb-c output and hide a blue y capacitor to eliminate the output interference of usb-c port.
There is also a MOS tube.
MOS tube silk screen 10r12b 1808k2f, type-C port output synchronous rectification, controlled by PI controller.
List of PCB back.
Near the input terminal is an abs210 rectifier bridge.
The largest main control chip on the back is pi scheme, silk screen printing inn2215k, which is responsible for the power management of usb-c port output.
The innoswitch CP series of PI company, off-line CV / cc flyback switch integrated circuit, integrates 650V MOSFET, sync rect feedback and constant power distribution diagram for usb-pd and QC 3.0, which greatly simplifies the development and manufacture of low-voltage and high current power supply, especially small-size and high-efficiency power supply. It supports fast charging protocols usb-pd and QC 3.0, isolation voltage greater than 3500 VAC, ul1577 and TUV (en60950) safety certification, and is compatible with en61000-4-8 (100 a / M) and en61000-4-9 (1000 a / M). It is mainly used in QC 3.0 and usb-pd chargers. The chip is also widely used by large manufacturers such as Huawei.
On the front of the USB PD protocol board, there is an output MOS tube.
Weizhao semiconductor vs3508ae is used as VBUS switch of type-C output port.
The back of USB PD protocol board is PD protocol chip.
The PD protocol chip is from welrend Weiquan wt6632f and supports QC2 0 and QC3 0 agreement.
Weiquan wt6632f is a highly integrated USB PD controller, which supports USB PD3 0 specification, supports a wide operating voltage range from 3V to 30V, and is designed for USB type downstream oriented port (source) charging applications (such as travel adapter, charger and power Library). The wt6632f minimizes external components by integrating USB PD baseband physics, type C detection, shunt regulator, voltage and current monitor, blocking MOSFET control circuit, and an 8-bit MCU, allowing small form factors and low BOM cost.
Ubs-a port PWM chip, silk screen 560151 142cp.
Usb-a port protocol chip, silk screen 7613 2390, supports intelligent identification.
Ambol ob2001zcp synchronous rectifier chip, built-in synchronous rectifier MOS and synchronous rectifier controller.
After disassembly, all items are listed.
3、 Disassembly summary of charging head network
The new spo three Port USB PD charger adopts two independent output schemes, 18W type-C output and 12W usb-a output, which do not interfere with each other. Therefore, when we use the usb-c port to quickly charge the device, the usb-a port can also reach 12W output power, which is the guarantee that the charging has a maximum 30W output power. At the same time, in order to meet the heat dissipation demand of high-power output, a large copper heat sink is used inside the charger.
The usb-c port output of the charger adopts the inn2215k main control chip of PI company, which has high integration and saves PCB space; Weiquan wt6632f is used as the protocol chip to realize USB PD and QC2 0.QC3. 0 protocol, the output adopts solid-state capacitors, which can reduce the output ripple, and the materials are quite solid.
Home