CN218243330U

CN218243330U - Integrated circuit power module

Info

Publication number: CN218243330U
Application number: CN202222784618.4U
Authority: CN
Inventors: 周钰; 万志兵
Original assignee: Shenzhen Zhouli Electronic Technology Co ltd
Current assignee: Shenzhen Zhouli Electronic Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-01-06
Anticipated expiration: 2032-10-21

Abstract

The utility model relates to the field of integrated circuits, in particular to an integrated circuit power supply module, which comprises a voltage input end, a rectifier module and an integrated circuit unit, wherein the current input end is connected with the input end of the rectifier module, and the output end of the rectifier is connected with the integrated circuit unit; the output of the voltage and the current required by the load can be met by adjusting the two adjustable resistors arranged in the integrated circuit unit. Namely the utility model discloses a power module can satisfy the heavy current demand of load, and simple structure.

Description

Integrated circuit power module

Technical Field

The utility model relates to an integrated circuit field, concretely relates to integrated circuit power module.

Background

The power supply voltage-stabilizing integrated circuit X78XX has fixed voltage output, and is widely applied. Each type allows the circuit to be substantially undamaged due to internal current limitations, as well as over-temperature protection and safe operating area protection. Taking a 7805 linear voltage regulator as an example, 7805 is mostly used for a TO220 package and outputs a maximum power supply of 1A, and other series in an X78XX series of integrated circuits can output a current greater than 1.5A if enough heat sinks are provided, but the output current still cannot meet the requirement of a larger current; meanwhile, the power supply voltage stabilization integrated circuit X78XX series belongs to a linear power supply, and the power supply conversion efficiency is low; meanwhile, when the current larger than 1.5A is output, the power supply voltage stabilizing integrated circuit X78XX series needs enough heat dissipation fins to dissipate heat, so that the structure of the power supply module is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an integrated circuit power module for solve the unable demand, the power conversion efficiency of satisfying more heavy current of current stabiliser and hang down, the problem that the structure is complicated.

The utility model discloses an integrated circuit power module, which comprises a power supply, a rectifier module and a circuit unit module, wherein the power supply is connected with the input end of the rectifier module, and the output end of the rectifier is connected with the circuit unit module;

the circuit unit module comprises a first capacitor, a second capacitor and an integrated circuit module; the integrated circuit module comprises an integrated chip and a peripheral circuit of the integrated chip, wherein the integrated chip and the peripheral circuit of the integrated chip are integrated into a whole module; one end of the first capacitor is connected with a power input pin of the integrated chip; one end of the second capacitor is connected with the current and voltage output end of the integrated chip; the other end of the first capacitor and the other end of the second capacitor are both grounded; the peripheral circuit of the integrated chip comprises a first adjustable resistor and a second adjustable resistor, and the first adjustable resistor and the second adjustable resistor are arranged at the current and voltage output end of the integrated chip in series; the resistance range of the first adjustable resistor is 20K-200K; the resistance value of the second adjustable resistor is 5K-100K.

Preferably, the resistance value of the first adjustable resistor is 40.2K; the resistance value of the second adjustable resistor is 7.68K.

Preferably, the peripheral circuit of the integrated chip further comprises a first resistor, a third capacitor and an inductor; a power input pin of the integrated chip is connected with one end of the first resistor; the other end of the first resistor is connected with an enabling pin; one end of the third capacitor is connected with the self-lifting presser foot; the other end of the third capacitor and one end of the inductor are both connected with the switch pin; the other end of the inductor is a current and voltage output end; the other end of the inductor is connected with one end of the first adjustable resistor; the other end of the first adjustable resistor is respectively connected with the output voltage feedback pin and one end of the second adjustable resistor; the other end of the second adjustable resistor is grounded.

Preferably, the output terminal of the rectifier is connected to a power input pin of an integrated chip of the integrated circuit unit.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an integrated circuit power module belongs to high frequency switching power supply, and efficiency is up to 96%, need not to install the heat dissipation additional for whole integrated circuit power module simple structure.

Meanwhile, the integrated circuit power module of the utility model can be disassembled when the integrated circuit unit is abnormal by arranging the integrated chip module which is integrated independently, and the operation is simple and the realization is easy; and simultaneously, the resources are saved.

The utility model discloses an among the integrated circuit unit through setting up two adjustable resistance, can freely adjust two adjustable resistance's resistance, realize 5V 2A's current-voltage's output, satisfy the demand of follow-up load to the heavy current.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions and advantages of the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described, it is obvious that the drawings in the description below are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a circuit diagram of an integrated circuit power module according to the present invention;

fig. 2 is a circuit diagram of the circuit unit module of the present invention;

FIG. 3 is a block diagram of the TO220 package of the integrated circuit module of the present invention;

fig. 4 is a component layer layout of the PCB board size of the integrated circuit module of the present invention;

FIG. 5 is a schematic diagram of a PCB bottom layer of the integrated circuit module of the present invention;

FIG. 6 is a schematic diagram of the PCB principle package of the integrated circuit module of the present invention;

description of the drawings: 1-mounting hole, 2-chip inductor.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and preferred embodiments.

The existing circuit power supply module is based on the existing common 7805 integrated chip, wherein the package of the 7805 integrated chip is mostly TO220 package, and the packaged module is a power supply outputting the maximum current of 1A, which cannot meet the requirement of larger current of a load; therefore the utility model provides a new integrated circuit power module.

Specifically, as shown in fig. 1, the utility model provides an integrated circuit power module, which comprises a power supply, a rectifier module and a circuit unit module, wherein the power supply is connected to the input end of the rectifier module, and the output end of the rectifier is connected to the circuit unit module; a capacitor C4 is also arranged in parallel between the rectifier module and the circuit unit module; the output end of the circuit unit module is also provided with two parallel branches, namely a capacitor C5 and a resistor RL.

As shown in fig. 2, the circuit unit module includes a first capacitor C1, a second capacitor C2 and an integrated circuit module; the integrated circuit module comprises an integrated chip and a peripheral circuit of the integrated chip, the integrated chip and the peripheral circuit are arranged in an integrated manner, and the first capacitor C1 and the second capacitor C2 are respectively arranged at a power supply input end and a current and voltage output end of the integrated circuit module; one end of the first capacitor is connected with a power input pin of the integrated chip; one end of the second capacitor is connected with the current and voltage output end of the integrated chip; the other end of the first capacitor and the other end of the second capacitor are both grounded.

It should be noted that the first capacitor C2 and the second capacitor C2 are components independent of the integrated circuit module, and do not belong to a part of the integrated circuit module; the integrated circuit module is integrated into a module, and can be detached and replaced when abnormality occurs, so that the operation is convenient, and resources are saved.

The peripheral circuit of the integrated chip comprises a first resistor, a third capacitor, an inductor, a first adjustable resistor and a second adjustable resistor, as shown in fig. 2, a power input pin VIN is connected with one end of a first resistor Ren; the other end of the first resistor Ren is connected with a pin EN; the pin BST is connected with one end of the third capacitor C3; the pin SW is respectively connected with the other end of the third capacitor C3 and one end of the inductor L; the other end of the inductor L is a current voltage output end VOUT; the other end of the inductor L is connected with one end of the first adjustable resistor R1 respectively; the other end of the first adjustable resistor R1 is connected with the pin FB and one end of the second adjustable resistor R2 respectively; the other end of the second adjustable resistor R2 is grounded.

The resistance range of the first adjustable resistor R1 in this embodiment is 20K to 200K; the resistance value of the second adjustable resistor R2 is 5K-100K, namely, a power supply of 5V2A can be output by adjusting the first adjustable resistor R1 and the second adjustable resistor R2, and the requirement of large current of a load is met. Specifically, when a 5V2A power supply is output, the resistance value of the first adjustable resistor R1 is 40.2K Ω; the resistance value of the second adjustable resistor R2 is 7.68K omega.

It should be noted that the integrated chip in the above embodiments uses a chip from Shanghai Berlin, and the model may be BL8032 or BL8033; the two types of integrated circuit chips are voltage reduction ICs which output maximum current 2A or 3A respectively.

Further, the output terminal of the rectifier in this embodiment is connected to the power input pin VIN of the integrated chip of the integrated circuit unit.

It should be noted that, the first, second, third and fourth capacitors of the first capacitor, the second capacitor, the third capacitor and the fourth capacitor are only used for distinguishing the capacitors at different positions in the circuit, and have no limiting function, that is, they have no meaning in practice; similarly, for the first resistor, the first and second adjustable resistors in the first adjustable resistor and the second adjustable resistor are only used for distinguishing different resistors; of course, the first, second, third, etc. in the above description may also be further described according to the actual situation.

The integrated chip in the integrated circuit module in this embodiment takes BL8032 as an example, and the description is briefly made:

BL8032 is a fully integrated, high efficiency 2A synchronous rectification buck converter.

The integrated chip provides two working modes, PWM/PFM mode switching control.

The circuit unit module formed by the BL8032 chip and the peripheral circuit adopted by the utility model is shown in figure 2,

power input pin VIN: and inputting a power supply.

Ground pin GND: and a ground terminal.

Pin EN: the enable pin, high potential is active, and a 100K resistor is connected to the power input pin VIN to obtain high potential.

A pin BST: the self-lifting presser foot needs to connect a capacitor between the SW pin and the BST pin to form a floating high-voltage side driver for supplying power;

a pin SW: the switch pin is externally connected with an inductor;

and a pin FB: the output voltage feedback pin, the reference voltage 0.8V, is externally connected with a pull-up and pull-down resistor to obtain stable output voltage.

Similarly, the integrated chip BL8033 is a synchronous buck chip outputting 3A, the RON value of the high-voltage end of the internal MOSFET is 120m Ω, and the RON value of the low-voltage end is 60m Ω; the RON value of the low-side MOSFET is much smaller than 70m Ω compared with 150m Ω of the high-side MOSFET of the integrated chip BL8032, so that the integrated chip BL8033 can drive a larger output current, which will not be described in more detail herein.

The utility model discloses utilize above-mentioned BL 8032's integrated chip, build integrated chip's peripheral circuit, constitute an integrated integration's integrated circuit module with integrated chip and integrated chip's peripheral circuit, encapsulate this integrated circuit module according TO TO 220's packaging mode, as shown in FIG. 3 TO replace 7805 integrated chip, realize the output of more heavy current.

The TO220 package of the integrated circuit module in fig. 3 has a module effect diagram, including the positions of the resistor, the ic and the chip inductor 2, three pins: power input pin VIN, ground pin GND, output voltage terminal VOUT. Wherein the mounting hole 1 can be directly connected to the ground wire for heat dissipation as the heat sink of 7805 functions. As shown in fig. 4, the integrated circuit module package has a PCB board dimension width of 10.08 mm. Through the arrangement of the component layers and the bottom layers in fig. 4 and 5, a PCB schematic package diagram of the integrated circuit module shown in fig. 6 is finally obtained.

The utility model discloses TO the TO220 encapsulation that the step-down chip of Shanghai beiling goes on, make its output current 2A3A total 2 models that do not make the biggest difference, satisfying the demand of more heavy current like this, can also encapsulate according TO the mode of 7805's TO220 encapsulation commonly used, improved the commonality, can directly use in the integrated circuit power module, it is more convenient TO change.

The rectifier module in this embodiment is composed of four diodes. Of course, as other embodiments, the rectifier module of the present invention may also adopt a silicon controlled rectifier, and since the rectifier is the prior art, it is not described herein too much.

The design of the integrated circuit power supply module of the utility model can output 5V2A voltage and current and 5V3A voltage and current; meanwhile, the circuits except the first capacitor C1 and the second capacitor C2 form a module, devices needing to be integrated are reduced as far as possible, the integrated circuit module is designed into a 5V2A or 5V3A integrated circuit module, the requirement of large current is met, no radiating fin is needed when the integrated circuit module is used, and the integrated circuit module is simple in structure and low in cost.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. An integrated circuit power module is characterized by comprising a power supply, a rectifier module and a circuit unit module, wherein the power supply is connected to the input end of the rectifier module, and the output end of the rectifier is connected with the circuit unit module;

the circuit unit module comprises a first capacitor, a second capacitor and an integrated circuit module; the integrated circuit module comprises an integrated chip and a peripheral circuit of the integrated chip, wherein the integrated chip and the peripheral circuit of the integrated chip are integrated into a whole module; one end of the first capacitor is connected with a power input pin of the integrated chip; one end of the second capacitor is connected with the current and voltage output end of the integrated chip; the other end of the first capacitor and the other end of the second capacitor are both grounded;

the peripheral circuit of the integrated chip comprises a first adjustable resistor and a second adjustable resistor, and the first adjustable resistor and the second adjustable resistor are arranged at the current and voltage output end of the integrated chip in series; the resistance range of the first adjustable resistor is 20K-200K; the resistance value of the second adjustable resistor is 5K-100K.

2. The integrated circuit power supply module of claim 1, wherein the first adjustable resistor has a resistance of 40.2K; the resistance value of the second adjustable resistor is 7.68K.

3. The integrated circuit power supply module of claim 1, wherein the peripheral circuit of the integrated chip further comprises a first resistor, a third capacitor, an inductor; a power input pin of the integrated chip is connected with one end of the first resistor; the other end of the first resistor is connected with an enabling pin; one end of the third capacitor is connected with the self-lifting presser foot; the other end of the third capacitor and one end of the inductor are both connected with the switch pin; the other end of the inductor is a current and voltage output end; the other end of the inductor is connected with one end of the first adjustable resistor; the other end of the first adjustable resistor is respectively connected with the output voltage feedback pin and one end of the second adjustable resistor; the other end of the second adjustable resistor is grounded.

4. The integrated circuit power module of claim 1, wherein the output of the rectifier is connected to a power input pin of an integrated chip of the integrated circuit unit.