CN213547371U - Intelligent DC-DC power module - Google Patents
Intelligent DC-DC power module Download PDFInfo
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- CN213547371U CN213547371U CN201922450952.4U CN201922450952U CN213547371U CN 213547371 U CN213547371 U CN 213547371U CN 201922450952 U CN201922450952 U CN 201922450952U CN 213547371 U CN213547371 U CN 213547371U
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Abstract
The utility model provides an intelligent DC-DC power module, which comprises a power supply unit, a switch driving unit, a control chip and a signal input unit; the control chip is externally connected with the signal input unit and used for rewriting an output set value in the control chip from the outside, adjusting the output voltage characteristic of the module, writing a required output voltage value and a switching frequency into the control IC through the communication interface by an external computer, providing a PWM signal for a driving circuit by the control IC, and controlling the turn-on and turn-off time of each period of Q1. The longer the Q1 on-time, the higher the output voltage, the control IC detects the output voltage through the feedback circuit and compares with the value written in the communication interface, and adjusts the on-time, i.e. the PWM signal, to keep the output voltage at the set value. Q2 is a synchronous rectifier fet that turns on and off in the opposite direction to Q1, and serves only to increase the efficiency of the power supply.
Description
Technical Field
The utility model discloses intelligence power module field especially relates to an intelligence DC-DC power module.
Background
The output voltage and the working frequency of the traditional DC-DC power supply are set by a resistor and a capacitor in a circuit board, and the traditional DC-DC power supply cannot be adjusted externally after being produced. When the equipment is operated at different loads, the fixed parameters do not enable the system to operate at the most efficient state. If the device is to use a non-standard voltage, it is also necessary to make special orders to the factory.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of current DC-DC power module, the utility model provides an intelligence DC-DC power module, this module increase on the basis of traditional module with the function of external communication, can change power module's output voltage and operating frequency by the external computer through the software. The client externally changes the parameters according to the actual working condition of the equipment, so that the system works in the optimal state.
The utility model discloses a realize like this:
an intelligent DC-DC power supply module is characterized by comprising a power supply unit, a switch driving unit, a control chip and a signal input unit;
the power supply unit is connected with the switch driving unit and is used for providing system power supply for the switch driving unit;
the switch driving unit is connected with the control chip and used for receiving a control signal sent by the switch control chip;
the control chip is externally connected with the signal input unit and used for rewriting an output set value in the control chip from the outside and adjusting the output voltage characteristic of the module.
In some embodiments of the present invention, the control chip is an APS8803 chip, and the signal pins SDA and SCL of its I2C bus are used as the access pins of the external signal input unit and are connected to the signal input unit through the I2C bus.
In some embodiments of the present invention, a resistance of 2.2K Ω is connected to the SDA pin and the SCL pin, respectively, and a 3.6V system voltage is loaded.
In some embodiments of the present invention, the switch driving unit employs an ADP3110A chip, and the driving pins DRVH and DRVL thereof are respectively connected to the gates of a field effect transistor Q1 and Q2, and are used for controlling the switch driving of Q1 and Q2.
IN some embodiments of the present invention, the IN and OD pins of the ADP3110A are respectively connected to the general purpose input/output ports GPIO3 and GPIO4 of the APS8803 chip, and are used as the pulse width modulation signals of the driving unit.
In some embodiments of the present invention, the power supply unit employs a synchronous buck converter AP63205 chip, and its input terminal VIN and enable terminal EN are connected to the input power terminal, and it is connected to the self-boost voltage pin BST of the driving unit ADP 3110A.
In some embodiments of the present invention, the power module further comprises a load terminal voltage sensing contact + S and-S, wherein the sensing contacts are system output + Vout and-Vout, respectively, and the sensing contact + S is connected to the V3 pin of APS8803 through a resistor-capacitor parallel circuit.
The embodiment of the utility model provides an at least, have following advantage or beneficial effect:
the traditional power supply module is not provided with a communication interface and an MCU part, and the output voltage and the working frequency cannot be changed by an external computer. Although the working frequency does not affect the output voltage value, the ratio of the input voltage to the output voltage is different, and the frequency corresponding to the highest working efficiency of the power supply is also different. Therefore, the output voltage and the working frequency can be adjusted to meet the requirements of customers on different voltages, and the system efficiency can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is the embodiment of the present invention intelligent DC-DC power module schematic diagram.
Wherein,
+ Vin/Gnd is the power input;
+ Vout/-Vout power supply output;
+ S/-S load terminal voltage sensing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" means at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
In order to overcome the not enough of current DC-DC power module, the utility model provides an intelligence DC-DC power module, this module increase on the basis of traditional module with the function of external communication, can change power module's output voltage and operating frequency by the external computer through the software. The client externally changes the parameters according to the actual working condition of the equipment, so that the system works in the optimal state.
The specific implementation method comprises the following steps:
an intelligent DC-DC power supply module, as shown in FIG. 1, includes a power supply unit, a switch driving unit, a control chip and a signal input unit;
the power supply unit is connected with the switch driving unit and is used for providing system power supply for the switch driving unit;
the switch driving unit is connected with the control chip and used for receiving a control signal sent by the switch control chip;
the control chip is externally connected with the signal input unit and used for rewriting an output set value in the control chip from the outside and adjusting the output voltage characteristic of the module.
In some embodiments of the present invention, the control chip is an APS8803 chip, and the signal pins SDA and SCL of its I2C bus are used as the access pins of the external signal input unit and are connected to the signal input unit through the I2C bus.
In some embodiments of the present invention, a resistance of 2.2K Ω is connected to the SDA pin and the SCL pin, respectively, and a 3.6V system voltage is loaded.
In some embodiments of the present invention, the switch driving unit employs an ADP3110A chip, and the driving pins DRVH and DRVL thereof are respectively connected to the gates of a field effect transistor Q1 and Q2, and are used for controlling the switch driving of Q1 and Q2.
IN some embodiments of the present invention, the IN and OD pins of the ADP3110A are respectively connected to the general purpose input/output ports GPIO3 and GPIO4 of the APS8803 chip, and are used as the pulse width modulation signals of the driving unit.
In some embodiments of the present invention, the power supply unit employs a synchronous buck converter AP63205 chip, and its input terminal VIN and enable terminal EN are connected to the input power terminal, and it is connected to the self-boost voltage pin BST of the driving unit ADP 3110A.
In some embodiments of the present invention, the power module further comprises a load terminal voltage sensing contact + S and-S, wherein the sensing contacts are system output + Vout and-Vout, respectively, and the sensing contact + S is connected to the V3 pin of APS8803 through a resistor-capacitor parallel circuit.
In summary, the power module operates in a high frequency on-off state, and automatically adjusts the on-time of each period according to the set values of the input voltage and the output voltage to achieve the stability of the output voltage.
The communication and power control IC are integrated in the same IC via I2C is connected with an external computer and can set the output voltage and the switching frequency of the power supply;
the external computer writes the required output voltage value and the switching frequency into the control IC through the communication interface, and the control IC provides a PWM signal to the driving circuit to control the on-off time of each period of Q1. The drain of the field effect transistor Q1 is connected with the resistor R1, the grid of the field effect transistor Q1 is connected with the DRVH pin of the ADP3110A, the longer the Q1 on-time is, the higher the output voltage is, the control IC detects the output voltage through the feedback circuit and compares the output voltage with the value written in the communication interface, and the on-time, namely the PWM signal is adjusted, so that the output voltage is maintained at the set value. Q2 is a synchronous rectifier fet that turns on and off in the opposite direction to Q1, and serves only to increase the efficiency of the power supply.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An intelligent DC-DC power supply module is characterized by comprising a power supply unit, a switch driving unit, a control chip and a signal input unit;
the power supply unit is connected with the switch driving unit and is used for providing system power supply for the switch driving unit;
the switch driving unit is connected with the control chip and used for receiving a control signal sent by the switch control chip;
the control chip is externally connected with the signal input unit and used for rewriting an output set value in the control chip from the outside and adjusting the output voltage characteristic of the module.
2. The intelligent DC-DC power supply module according to claim 1, wherein the control chip adopts APS8803 chip, and the SDA and SCL pins of the I2C bus of the control chip are used as access pins of an external signal input unit and are connected to the signal input unit through an I2C bus.
3. The intelligent DC-DC power supply module according to claim 2, wherein a resistor with a resistance of 2.2K Ω is connected to the pins SDA and SCL, and a system voltage of 3.6V is loaded.
4. The intelligent DC-DC power supply module of claim 1, wherein the switch driving unit employs an ADP3110A chip, and driving pins DRVH and DRVL of the switch driving unit are respectively connected to gates of a field effect transistor Q1 and a field effect transistor Q2, and are used for switching driving control of Q1 and Q2.
5. The intelligent DC-DC power supply module according to claim 4, wherein the IN and OD pins of the ADP3110A are respectively connected to the general input/output ports GPIO3 and GPIO4 of an APS8803 chip as pulse width modulation signals of the driving unit.
6. The intelligent DC-DC power supply module according to claim 1, wherein the power supply unit adopts a synchronous buck converter AP63205 chip, an input terminal VIN and an enable terminal EN thereof are connected to input power terminals, and a self-boosting pin BST thereof is connected to the self-boosting pin BST of the driving unit ADP 3110A.
7. The intelligent DC-DC power supply module of claim 1, further comprising load terminal voltage sensing junctions + S and-S, the sensing junctions of which are the system outputs + Vout and-Vout, respectively, wherein the sensing junction + S is connected to the V3 pin of APS8803 through a resistor-capacitor parallel circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922450952.4U CN213547371U (en) | 2019-12-30 | 2019-12-30 | Intelligent DC-DC power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922450952.4U CN213547371U (en) | 2019-12-30 | 2019-12-30 | Intelligent DC-DC power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213547371U true CN213547371U (en) | 2021-06-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922450952.4U Expired - Fee Related CN213547371U (en) | 2019-12-30 | 2019-12-30 | Intelligent DC-DC power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213547371U (en) |
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2019
- 2019-12-30 CN CN201922450952.4U patent/CN213547371U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210625 |