Power module and circuit board assembly thereof

Abstract

The invention relates to a power module and a circuit board assembly thereof, wherein the power module is arranged on a system circuit board and comprises a first wire winding base, the circuit board assembly and a first magnetic core group, wherein the first wire winding base is provided with a primary wire winding structure; the circuit board assembly comprises a circuit board, a secondary wirewinding structure, a current sensing element, a rectification circuit and a connector, wherein the secondary wire winding structure, the current sensing element, the rectification circuit and the connector are arranged on the circuit board; the secondary wire winding structure is provided with an output end; the current sensing element comprises a first conductive structure which is a conductive plate and the first conductive structure directly contacts the output end of the secondary wire winding structure through a first end part and is coupled with the rectification circuit through a second end part; the primary wire winding structure of the first wire winding base and the secondary wire winding structure of the circuit board assembly correspond to each other and are arranged between the first magnetic core group, and the primary wire winding structure and the connector of the circuit board assembly are electrically connected with the system circuit board. The circuit board assembly can shorten an AC path; in addition, the power module reduces the loss by shortening the AC path and reducing leakage inductance, thereby enhancing the reliability and the efficiency.

Description

technical field [0001] The invention relates to a power supply module and a circuit board combination thereof, in particular to a power supply module and a circuit board combination thereof capable of reducing loss. Background technique [0002] With the advancement of science and technology, all electrical equipment is developing towards high power density. In power supply design, the high frequency caused by high power density makes the design of magnetic components more important. [0003] see figure 1 , taking the known power supply unit (power supply unit) 1 as an example, it may include a transformer 11, a rectifier element 12 and a converter (current transformer, CT) 13, etc., which are all arranged on the system circuit board 10, wherein the transformer The primary winding of 11 can receive the input voltage, while the secondary winding can be electrically connected with the system circuit board 10 through the pin 111. As for the converter 13, a wire 131 passing thr...

AI Technical Summary

Problems solved by technology

[0004] However, since the pins 111 of the transformer 11 used to adjust the voltage of the known power supply unit 1 need to be welded on the system circuit board 10, and then the circuit of the system circuit board 10 can be electrically connected to the rectifying element 12, this configuration will make The distance between the lead wire of the secondary winding of the transformer 11 and the rectifying element 12 is relatively large and the AC path is relatively long, so the weld and the long AC path will generate large losses; in addition, the current conversion of the known power supply unit 1 The configuration of the device 13 will generate a large leakage inductance, which will also cause additional losses, thereby affecting the overall reliability and efficiency of the power supply unit 1

Furthermore, since the transformer 11, the rectifying element 12 and the converter 13 must be respectively arranged on the system circuit board 10 and then electrically connected to each other, it also has the problem of inconvenient installation.

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