When the power MOSFET is used as a rectifier, synchronous rectification wireless charging requires that the gate voltage must be synchronized with the phase of the rectified voltage to complete the rectification function, so it is called synchronous rectification. PS7516 and PS7616 are lithium battery booster output 5V1A, 2A synchronous rectifier booster classic IC, FP6717,FP6716 is also a lithium battery boost output 5V3A, 5V2A leader.
Principle of Synchronous rectifier circuit A synchronous rectifier circuit is a circuit that uses a method of synchronizing with the input voltage or current to achieve rectification. It usually consists of a converter and a rectifier. The converter can convert alternating current into direct current, while the rectifier can remove the instability in the output voltage or current. This method improves efficiency and can be used to control the amplitude and phase of current or voltage.
Synchronous rectification is widely defined, the past brush type DC generator, brush type changeThe current synchronous rectification mainly refers to the switching power supply rectifier circuit with MOS and IGBT as the core, which is characterized by the action of the switch (switching transistor, MOS tube) and the phase of the current flowing through (synchronous); For example, a transistor is always on when the transformer output positive half cycle, and the negative half cycle is cut off, which achieves synchronous rectification wireless charging synchronous rectification.
Synchronous rectification is a new technology that uses a special power MOSFET with very low on-state resistance to replace the rectifier diode to reduce the rectification loss. It can greatly increase DThere is a copper shielding layer, cut the tape paper on the shielding layer with a utility knife, and then weld the two solder joints connected between the shielding layer and the internal circuit board with an electric soldering iron, that is, remove the shielding layer. After the shielding layer is removed, there is usually a thick hard plastic film on the circuit board, and you can see the circuit board by cutting it with a utility knife.
3, first of all, we put the power adapter sideways on the white paper, and then cut the electrician's knife between the upper and lower covers of the adapter. At different positions of the gap between the upper and lower covers of the adapter, run the tip of the electrician's knife along the gap, when a certain part of the upper and lower covers first cracks, push the tip of the knife deep, thenSlowly separate the top and bottom covers of the adapter.
4, in the different positions of the gap between the upper and lower covers of the adapter, use the knife tip of the electrician's knife to swipe along the gap, when a certain part of the upper and lower covers are first cracked, the knife tip is deep, and then slowly separate the upper and lower covers of the adapter.
5, problem six: How to remove the power adapter Asus K40 hard disk and battery disassembly is not recommended to disassemble the machine, the disassembly will affect the warranty. If you need repair, it is recommended to go to the service center for repair. You can go to the ASUS official website to inquire service center, select service support options, and then click the service network below to inquire, product categorySelect your laptop and enter your city. Click Search to find the nearest service center.
This material is available on the market and is a wireless charging IC for integrated wireless power receiver applications for portable devices and is capable of managing up to 5 W of output power. The chip has been designed to support the inductive communication protocol of the Qi 4 specification and the basic power profile (BPP)。< / p >