Charging equipment of portable device

Abstract

The invention relates to a charging device for a portable apparatus, which is applied to charging up a battery module of the portable apparatus. The charging device comprises a sensing circuit, a control unit and a linear charging circuit. The sensing circuit detects a sensing signal generated when a power converter is inserted into the portable apparatus and transmits the sensing signal to the control unit; the control unit generates a control signal according to the sensing signal and the electric quantity of the battery module. The charging device of the invention is characterized in that the linear charging circuit receives an output power supply of the sensing circuit and charges up the battery module according to the control signal.

Description

technical field [0001] The invention relates to a charging device, in particular to a portable charging device. Background technique [0002] In today's society where technology is becoming more and more advanced, many technological products are constantly being introduced, such as mobile phone (mobile phone), personal digital assistant (Personal Data Assistant, PDA), hand-held computer (Hand-held computer), notebook computer ( Notebook computer) and other portable devices, which are easy to carry, allow users to exchange information, communicate with each other, access data, and accumulate knowledge anytime and anywhere, and further improve the quality of life and work efficiency of users. Therefore, if you want to use These portable devices are used for a long time, so the use and charging of the batteries of the portable devices is particularly important. [0003] Please refer to FIG. 1 , which is a block diagram of a conventional switching charging device. As shown in ...

AI Technical Summary

Problems solved by technology

[0007] Since the switching controller 150' must constantly switch the first switch 140' and the second switch 142', the circuit of the switching controller is complicated and an inductor 144' is set in the switching charging circuit 14', so the power loss is large, and, When the first switch 140' and the second switch 142' are located close to each other in circuit design, electromagnetic interference (Electromagnetic Interference, EMI) is likely to occur, so the circuit design is relatively complicated.

[0008] Therefore, how to propose a novel charging device for portable devices in view of the above problems, not only can avoid damage to the charging circuit due to overcurrent or overvoltage, but also has low power loss, simple circuit design and low cost, which can solve the above problems

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