TWI824652B - Power converter, signal control method of multiple integrated modules and an integrated module - Google Patents

Abstract

The application proposes a power converter, a signal control method of multiple integrated modules, and an integrated module. The power converter includes a plurality of integrated modules, and the plurality of integrated modules include a first integrated module and a second integrated module connected in parallel. The first integrated module includes a first trigger pin, the second integrated module includes a second trigger pin, and the first trigger pin is electrically connected to the second trigger pin. The first integrated module is used to generate a state triggering signal and a first pulse signal, and transmit the state triggering signal to the second integrated module through the first trigger pin. The second integrated module receives the state triggering signal transmitted by the first integrated module through the second trigger pin, and processes the state triggering signal to generate a second pulse signal.

Description

Power converter, signal control method of multiple integrated modules and integrated module

The present application relates to the technical field of power converters, and in particular, to a power converter, a signal control method for multiple integrated modules, and an integrated module.

When conventional power converters provide multi-phase power supply, they usually use series connection for phase control, thereby generating multi-phase output. Among them, the control integrated module generates an output signal according to the preset reference voltage and output voltage control loop, and outputs pulse signals through the driving of the driver and the transistor in sequence according to the number of operating phases. This configuration often requires the use of more drivers and transistor components and a larger circuit board layout area. If the drivers and transistors are to be integrated into the control integrated module, as the number of phases increases, , which will lead to problems such as the area of the control integrated module being too large, reduced output power efficiency, and difficulty in heat dissipation.

In view of this, it is necessary for this application to propose a power converter, a signal control method for multiple integrated modules, and an integrated module to solve the above problems.

This application proposes a power converter. The power converter includes multiple integrated modules. The multiple integrated modules include a first integrated module and a second integrated module connected in parallel. The first integrated module includes a first trigger pin. , the second integrated module includes a second trigger pin, the first trigger pin is electrically connected to the second trigger pin; the first integrated module is used to generate a status trigger signal and a first pulse signal, and through the first The trigger pin transmits the status trigger signal to the second integrated module; the second integrated module uses the second trigger The pin receives the status trigger signal transmitted by the first integrated module, and processes the status trigger signal to generate a second pulse signal.

Further, the first integrated module includes a first input setting pin, the second integrated module includes a second input setting pin, and the first input setting pin and the second input setting pin are respectively used to input operation configuration to The operation configuration of the first integrated module and the second integrated module includes the phase number of the power converter, the mode and phase sequence of the first integrated module and the second integrated module.

Furthermore, the status trigger signal includes voltage level information and edge rise and fall information. The voltage level information is combined with the edge rise and fall information to form the phase sequence of the integrated module. The phase sequence of the integrated module is integrated to form the signal pattern of the status trigger signal; and then the power supply The converter controls the phase of the integrated module based on the signal pattern.

Further, the first integrated module includes a first output pin and a first feedback pin, the second integrated module includes a second output pin; the first output pin is connected to one end of the first inductor, and the first inductor The other end is electrically connected to the capacitor; the second output pin is connected to one end of the second inductor, and the other end of the second inductor is electrically connected to the capacitor; the first feedback pin is electrically connected to the capacitor and is used to receive the output voltage of the capacitor. ; The first integrated module includes a first feedback module, which is used to receive the output voltage of the capacitor through the first feedback pin and generate a trigger signal according to the output voltage of the capacitor.

Further, the first integrated module includes a first signal conversion module, the first signal conversion module is used to receive the trigger signal generated by the first feedback module, and convert the trigger signal into a state trigger signal according to the signal pattern; the second The integrated module includes a second signal conversion module; the second signal conversion module receives the status trigger signal through the second trigger pin and decodes the status trigger signal according to the signal pattern to generate a second pulse signal.

Further, the first integrated module includes a first pulse generating module and a first driving module, the first pulse generating module is used to generate the first pulse signal, and the first driving module is used to drive the first pulse signal output; The second integrated module includes a second pulse generating module and a second driving module. The second pulse generating module The module is used to receive the status trigger signal decoded by the second signal conversion module and generate the second pulse signal according to the decoded status trigger signal. The second drive module is used to drive the second pulse signal output.

This application also proposes a signal control method for multiple integrated modules. The signal control method includes: providing multiple integrated modules, and the trigger pins of each integrated module are electrically connected to each other; wherein, the multiple integrated modules are single-phase Power converter, multiple integrated modules are connected in parallel to form a power converter, the multiple integrated modules include a first integrated module and a second integrated module; input operation configuration to each integrated module to set the power converter The number of phases, the mode of each integrated module and the phase sequence; among them, the mode of the first integrated module is set to the master mode, and the phase sequence is the first phase; the mode of the second integrated module is set to the slave mode, and the phase sequence is The second phase; the first integrated module generates a status trigger signal and a first pulse signal, and transmits the status trigger signal to the second integrated module through the first trigger pin; the second integrated module uses the second trigger pin The pin receives the status trigger signal transmitted by the first integrated module and processes the status trigger signal to generate a second pulse signal.

Further, the signal control method also includes: the status trigger signal includes voltage level information and edge rise and fall information. The voltage level information is combined with the edge rise and fall information to form a phase sequence of the integrated module. The phase sequence of the integrated module is integrated to form a status trigger signal. The signal pattern; then the power converter controls the phase of the integrated module according to the signal pattern.

Further, the signal control method also includes: the first integrated module encodes the trigger signal according to the signal pattern to generate a status trigger signal; the second integrated module decodes the received status trigger signal according to the signal pattern; the second integrated module The group generates a second pulse signal according to the decoded status trigger signal; the second integrated module drives the second pulse signal output.

This application also proposes an integrated module. The integrated module includes a single-phase power conversion circuit. The integrated module includes an input setting pin and a trigger pin; the input setting pin is used to input operation configuration to the integrated module; wherein, the operation The configuration includes the mode of the integrated module; the mode of the integrated module includes the master mode and the slave mode; when the mode of the integrated module is set to the master mode, the integrated module responds according to the signal pattern. The trigger signal is encoded to generate a status trigger signal, and the trigger pin is used to output the status trigger signal; when the mode of the integrated module is set to slave mode, the integrated module decodes the received status trigger signal according to the signal pattern to generate a corresponding pulse signal, and then the trigger pin is used to input the status trigger signal.

Furthermore, the operation configuration also includes the phase sequence of the integrated module; the status trigger signal includes voltage level information and edge rising and falling information. The voltage level information is combined with the edge rising and falling information to form the phase sequence of the integrated module. The phase of the integrated module The signal pattern is sequentially integrated to form a state trigger signal.

Furthermore, multiple integrated modules are connected in parallel to form a power converter, and the operation configuration also includes the number of phases of the power converter.

The power converter proposed in this application includes a plurality of integrated modules, and each integrated module can be a single-phase power converter. The trigger pins of each integrated module are connected to each other, and the integrated module set in the master mode drives the status trigger signal to the trigger pin. Based on the signal pattern of the specific status trigger signal, each integrated module outputs the corresponding pulse signal according to the preset phase sequence, where the phase sequence is the combination of the voltage level and rising and falling edges of the status trigger signal. Therefore, the expandable phase number and multi-phase control can be easily achieved by using a single phase control signal in parallel and based on a specific phase control signal pattern.

1:Power converter

10a: First integrated module

10b: Second integrated module

10c: The third integrated module

10d: The fourth integrated module

111: The first triangle wave generator

112: First error amplifier

113:First compensator

114: First comparator

11a: The first feedback module

11b: Second feedback module

11c: The third feedback module

11d: The fourth feedback module

12a: First signal conversion module

12b: Second signal conversion module

12c: The third signal conversion module

12d: The fourth signal conversion module

13a: First pulse generation module

13b: Second pulse generation module

13c: The third pulse generation module

13d: The fourth pulse generation module

14a: First drive module

14b: Second drive module

14c: Third drive module

14d: The fourth driver module

C: capacitor

FB-a: first feedback pin

FB-b: Second feedback pin

FB-c: The third feedback pin

FB-d: The fourth feedback pin

L-a: first inductor

L-b: second inductor

L-c: third inductor

L-d: fourth inductor

MODE-a: first input setting pin

MODE-b: Second input setting pin

MODE-c: The third input setting pin

MODE-d: The fourth input setting pin

OUT-a: first output pin

OUT-b: second output pin

OUT-c: The third output pin

OUT-d: The fourth output pin

ST-a: first trigger pin

ST-b: Second trigger pin

ST-c: The third trigger pin

ST-d: The fourth trigger pin

S1201~S1205: steps

Figure 1 is a circuit diagram of the power converter proposed in the embodiment of the present application; Figure 2 is a schematic structural diagram of the integrated module in Figure 1; Figure 3 is a schematic diagram of four signal patterns when the status trigger signal contains three voltage level information ; Figure 4 is a schematic diagram of a signal pattern when the status trigger signal contains four voltage level information; Figure 5 is a circuit diagram of a four-phase power converter; Figure 6 is a signal waveform diagram of each signal generated by the four-phase power converter ; Figure 7 is a signal waveform diagram of each signal generated when the load of a four-phase power converter suddenly changes; Figure 8 is a signal waveform diagram of each signal when a full-phase output signal appears in the status trigger signal; Figure 9 is a power converter The waveform diagram of each signal generated when the power converter outputs a three-phase pulse signal; Figure 10 is a waveform diagram of each signal generated when the power converter outputs a two-phase pulse signal; Figure 11 is the waveform diagram of each signal generated when the power converter outputs a single-phase pulse signal The waveform diagram; Figure 12 is a flow chart of the signal control method of multiple integrated modules proposed in the embodiment of the present application.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the description of the present application are only for describing specific embodiments and are not intended to limit the present application.

The terms "first" and "second" in the description of this application and the above-mentioned drawings are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the term "include" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include steps or modules that are not listed, or may optionally This also includes other steps or modules that are inherent to such processes, methods, products or devices.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments may be combined with each other without conflict.

Please refer to FIG. 1 , which is a circuit diagram of the power converter 1 proposed in the embodiment of the present application. The power converter 1 may include a plurality of integrated modules connected in parallel (FIG. 1 only takes a two-phase power converter formed by two integrated modules 10a and 10b as an example). The specific integrated modules 10a and 10b can be single-phase converters respectively, and both include single-phase power conversion circuits for generating and outputting pulse signals. In some embodiments, the number of integrated modules in the power converter 1 can be adjusted according to the specific phase output requirements, and the power converter 1 can be used as a single-phase converter to output a single-phase signal or as a multi-phase converter. The device outputs multi-phase signals, so the number of phases can be expanded.

Please refer to Figure 2 as well. The integrated modules 10a and 10b respectively include a trigger pin, an input setting pin, an output pin and a feedback pin.

In the embodiment of the present application, the integrated module 10a can be used as the first integrated module, that is, the trigger pin in the integrated module 10a can be used as the first trigger pin, and the input setting pin in the integrated module 10a can be used as the first Input setting pin, the output pin in the integrated module 10a can be used as the first output pin, and the feedback pin in the integrated module 10a can be used as the first feedback pin.

It can be understood that the integrated module 10b can be used as a second integrated module, that is, the trigger pin in the integrated module 10b can be used as a second trigger pin, and the input setting pin in the integrated module 10b can be used as a second input setting pin. , the output pin in the integrated module 10b can be used as the second output pin, and the feedback pin in the integrated module 10b can be used as the second feedback pin.

In the embodiment of the present application, the first trigger pin and the second trigger pin are electrically connected, so that the first integrated module 10a and the second integrated module 10b are electrically connected for phase control signal transmission.

In the embodiment of the present application, the first input setting pin is used to input the operation configuration to the first integrated module 10a, and the second input setting pin is used to input the operation configuration to the second integrated module 10b. The operation configuration includes the number of phases of the power converter 1, the modes of the integrated modules in the power converter 1 (for example, master mode and slave mode), and the phase sequence of the integrated modules.

For example, in this embodiment, by inputting the default operation configuration into the first integrated module 10a and the second integrated module 10b, the power converter 1 is configured as a two-phase power converter. At the same time, the mode of the first integrated module 10a is set to the main control mode, and the phase sequence is the first phase. The mode of the second integrated module 10b is set to the slave mode, and the phase sequence is the second phase.

For another example, in another embodiment, the mode of the second integrated module 10b can also be set to the master mode, and the phase sequence is the first phase; the mode of the first integrated module 10a can be set to the slave mode, and the phase sequence is the second phase. The first phase and the second phase respectively include preset voltage level information and edge lifting information to respectively form a signal pattern corresponding to the first integrated module and a signal pattern corresponding to the second integrated module.

In a specific embodiment, when the mode of the first integrated module 10a is the main control mode, the first trigger pin is set as an output pin for outputting a status trigger signal as a phase control signal. When the mode of the second integrated module 10b is the slave mode, the second trigger pin is set as an input pin for receiving the status trigger signal output by the first trigger pin of the first integrated module 10a. Therefore, through the transmission of this single signal, phase control between the first integrated module 10a and the second integrated module 10b can be achieved. It is understood that in other embodiments, this single signal can be used to achieve phase control between more integrated modules.

Specifically, the input setting pin can input operation configuration through resistor voltage division (analog method). For example, connect a voltage dividing resistor in series with the input setting pin. It can be understood that if the resistance of the voltage dividing resistor connected to the input setting pin is different, the voltage input to the input setting pin will be different, that is, the input operation configuration will be different.

In some embodiments, the input setting pin can also input operation configuration through signal input (digital mode). For example, by inputting a digital signal with a preset operating configuration to the input setting pin.

In the embodiment of the present application, the first integrated module 10a outputs the first pulse signal generated by it through the first output pin, and the second integrated module 10b outputs the second pulse signal generated by it through the second output pin. Pulse signal output.

In the embodiment of the present application, the first output pin and the second output pin are respectively coupled to one end of the capacitor C through the first inductor L-a and the second inductor L-b, and the other end of the capacitor C is grounded. Specifically, the first output pin is connected to one end of the first inductor L-a, the second output pin is connected to one end of the second inductor L-b, and the other ends of the first inductor L-a and the second inductor L-b are connected to the voltage output end of the capacitor. . In the circuit of the power converter 1, the first inductor L-a and the second inductor L-b are used to store the electricity in the respective circuits and provide the output of ripple current. Capacitor C is used to store the power in the power converter 1 and stabilize the output voltage.

In the embodiment of the present application, the first feedback pin is connected to the output voltage terminal of the capacitor C for receiving the output voltage of the capacitor C.

Referring to Figure 2, the first integrated module 10a also includes a first feedback module 11a, a first signal conversion module 12a, a first pulse generation module 13a and a first driving module 14a. Correspondingly, the second integrated module 10b also includes a second feedback module 11b, a second signal conversion module 12b, a second pulse generation module 13b and a second driving module 14b.

In a specific embodiment, when the mode of the first integrated module 10a is the main control mode, the first feedback module 11a is used to generate a trigger signal. Specifically, the first feedback module 11a receives the output voltage of the capacitor C through the first feedback pin, and then generates a trigger signal according to the output voltage of the capacitor C. When the mode of the second integrated module 10b is the slave mode, the second feedback module 11b is in a closed state, and the second feedback pin can be electrically connected to a capacitor or floating or connected to the highest potential or the lowest potential.

In some embodiments, the first feedback module 11a includes a first triangle wave generator 111, a first error amplifier 112, a first compensator 113 and a first comparator 114.

The first triangular wave generator 111 is used to generate a triangular wave signal.

The first error amplifier 112 is used to compare the output voltage of the capacitor C with the reference voltage of the power converter 1 to obtain a voltage error and generate an error signal. It can be understood that the reference voltage of the power converter 1 is the voltage of the high-stability voltage source used as a voltage reference in the power converter 1 .

The first compensator 113 is electrically connected to the first error amplifier 112. The first compensator 113 is used to receive the error signal generated by the first error amplifier 112 and compensate the error signal to generate a compensation signal.

The first comparator 114 is used to compare the triangle wave signal generated by the first triangle wave generator 111 with the compensation signal generated by the first compensator 113 to generate a trigger signal. Specifically, when the voltage levels of the triangle wave signal and the compensation signal intersect, the first comparator 114 generates a trigger signal accordingly.

In a specific embodiment, when the mode of the first integrated module 10a is the main control mode, the first signal conversion module 12a receives the trigger signal generated by the first feedback module 11a and processes the trigger signal. Specifically, the first signal conversion module 12a encodes the trigger signal according to the signal pattern, generates a state trigger signal, and then outputs the state trigger signal through the first trigger pin.

In a specific embodiment, when the mode of the second integrated module 10b is the slave mode, the second signal conversion module 12b receives the status trigger signal sent by the first integrated module 10a through the second trigger pin, and controls the trigger. The signal is processed. Specifically, the second signal conversion module 12b decodes the status trigger signal, and then transmits the decoded status trigger signal to the second pulse generation module 13b of the second integrated module 10b.

It can be understood that in this embodiment, the structure of the second feedback module 11b can be the same as that of the first feedback module 11a, that is, the second feedback module 11b includes a triangle wave generator, an error amplifier, a compensator and a comparator.

Specifically, the state trigger signal includes voltage level information and edge rising and falling information, wherein the voltage level information (for example, high level, low level, intermediate level) is matched with edge rising and falling information (for example, rising edge, falling edge) Then it can be combined into a phase sequence of the integrated module, and the phase sequence of the integrated module is integrated to form a variety of signaling patterns (signaling patterns) of the state trigger signal. In a specific embodiment, the power converter 1 only needs to select a combination of voltage level information and edge rise and fall information as the signal pattern, and then the power converter 1 controls the phase of each integrated module based on this signal pattern.

For example, please refer to Figure 3. It can be seen from the figure that when the status trigger signal contains three voltage level information, the status trigger signal can be combined to form at least four signal patterns. For another example, see Figure 4. The state trigger signal shown in Figure 4 is one of the signal patterns formed by four types of voltage level information combined with edge rising and falling information. In this particular signal pattern, the rise and fall between four voltage levels includes six triggering conditions. It can be understood that the rise and fall changes between voltage levels define various trigger conditions (ie, phase sequences) to define the signal pattern of the status trigger signal.

The first pulse generation module 13a and the second pulse generation module 13b are both used to generate pulse signals. In some embodiments, the first pulse generation module 13a and the second pulse generation module 13b are also used to adjust the pulse width of the pulse signal.

In a specific embodiment, when the mode of the first integrated module 10a is the main control mode, the first pulse generating module 13a can directly generate the first pulse signal without generating the first pulse signal according to the status trigger signal. When the mode of the second integrated module 10b is the slave mode, the second pulse generation module generates a second pulse signal according to the status trigger signal processed by the second signal conversion module 12b.

The first driving module 14a is used to drive the first pulse signal to be output from the first output pin. The second driving module 14b is used to drive the second pulse signal to be output from the second output pin. Specifically, the first driving module 14a and the second driving module 14b respectively include a driver and a field effect transistor. The driver is used to drive the field effect transistor, and the field effect transistor is used to output pulse signals.

In some embodiments, each module on the integrated modules 10a and 10b is highly integrated and reasonably distributed on the integrated modules 10a and 10b, so that the integrated modules 10a and 10b occupy a small area and can achieve high heat dissipation. efficiency, saving the area of the power converter 1, and improving the power efficiency of the power converter 1.

Please refer to Figures 5 and 6. Figures 5 and 6 take the power converter 1 to output a four-phase pulse signal as an example to introduce the power converter 1. Figure 5 is a circuit diagram of the four-phase power converter 1, and Figure 6 is a four-phase power supply. Signal waveform diagram generated by converter 1. In this embodiment, the power converter 1 includes a first integrated module 10a, a second integrated module 10b, a third integrated module 10c and a fourth integrated module 10d.

Correspondingly, the four integrated modules 10a, 10b, 10c, and 10d each include an input setting pin MODE, and the operation configuration is input through the respective input setting pin MODE. The four integrated modules 10a, 10b, 10c, and 10d are configured in corresponding modes and phase sequences according to the operation configuration.

Specifically, the first integrated module 10a obtains the operation configuration from the first input setting pin MODE-a, and then configures the mode of the first integrated module 10a to the main control mode according to the operation configuration. The first integrated module 10a 10a phase sequence is the first phase. The second integrated module 10b obtains the operation configuration from the second input setting pin MODE-b, and then configures the mode of the second integrated module 10b to the slave mode according to the operation configuration. The phase sequence of the second integrated module 10b is Second phase. The third integrated module 10c obtains the operation configuration from the third input setting pin MODE-c, and then configures the mode of the third integrated module 10c to the slave mode according to the operation configuration. The phase sequence of the third integrated module 10c is The third phase. The fourth integrated module 10d obtains the operation configuration from the fourth input setting pin MODE-d, and then configures the mode of the fourth integrated module 10d to the slave mode according to the operation configuration. The phase sequence of the fourth integrated module 10d is The fourth phase.

Correspondingly, the first integrated module 10a, the second integrated module 10b, the third integrated module 10c and the fourth integrated module 10d respectively include a first trigger pin ST-a, a second trigger pin ST-b, The third trigger pin ST-c and the fourth trigger pin ST-d. Specifically, the first trigger pin ST-a, the second trigger pin ST-b, the third trigger pin ST-c and the fourth trigger pin ST-d are electrically connected to each other.

Correspondingly, the first integrated module 10a, the second integrated module 10b, the third integrated module 10c and the fourth integrated module 10d respectively include a first output pin OUT-a, a second output pin OUT-b, The third output pin OUT-c and the fourth output pin OUT-d. Specifically, the first output pin OUT-a, the second output pin OUT-b, the third output pin OUT-c and the fourth output pin OUT-d are respectively connected with the first inductor L-a, the second inductor L-b, The third inductor L-c and the fourth inductor L-d are electrically connected, and the first inductor L-a, the second inductor L-b, the third inductor L-c and the fourth inductor L-d are electrically coupled to one end of the capacitor C (the output voltage end). The other end of capacitor C is connected to ground.

Correspondingly, the first integrated module 10a includes a first feedback pin FB-a, a first feedback module 11a, a first signal conversion module 12a, a first pulse generation module 13a and a first driving module 14a. Specifically, the first feedback pin FB-a is connected to the output voltage terminal of the capacitor C, and the first feedback module 11a By receiving the output voltage of the capacitor C through the first feedback pin FB-a, the first feedback module 11a generates a triangular wave signal and a compensation signal, and then the first feedback module 11a generates a trigger signal based on the triangular wave signal and the compensation signal.

Further, the first signal conversion module 12a of the first integrated module 10a generates a status trigger signal according to the trigger signal, and transmits the status trigger signal to the second integrated module 10b and the second integrated module 10b through the first trigger pin ST-a. The third integrated module 10c and the fourth integrated module 10d. Furthermore, the first pulse generating module 13a generates a first pulse signal, and drives the first pulse signal output through the first driving module 14a.

Correspondingly, the second integrated module 10b, the third integrated module 10c and the fourth integrated module 10d respectively include a second signal conversion module 12b, a third signal conversion module 12c and a fourth signal conversion module 12d. Specifically, the second signal conversion module 12b, the third signal conversion module 12c and the fourth signal conversion module 12d respectively use the second trigger pin ST-b, the third trigger pin ST-c and the fourth trigger pin. Pin ST-d receives the status trigger signal and processes the status trigger signal respectively.

Correspondingly, the second integrated module 10b, the third integrated module 10c and the fourth integrated module 10d respectively include a second pulse generating module 13b, a third pulse generating module 13c and a fourth pulse generating module 13d. Specifically, the second pulse generation module 13b receives the status trigger signal processed by the second signal conversion module 12b, and generates a second pulse signal according to the status trigger signal processed by the second signal conversion module 12b. Correspondingly, the third pulse generation module 13c and the fourth pulse generation module 13d generate the third pulse signal and the fourth pulse signal respectively.

Correspondingly, the second integrated module 10b, the third integrated module 10c and the fourth integrated module 10d respectively include a second driving module 14b, a third driving module 14c and a fourth driving module 14d. Specifically, the second driving module 14b drives the second pulse signal to be output from the second output pin OUT-b, the third driving module 14c drives the third pulse signal to be output from the third output pin OUT-c, and the fourth driver The module 14d drives the fourth pulse signal to be output from the fourth output pin OUT-d, so that the power converter 1 outputs a four-phase pulse signal.

In this embodiment, the trigger pins of each integrated module are connected together, and the integrated module in the master control mode (for example, the first integrated module 10a) uses a single signal to control the phase, that is, it is in the master control mode. The trigger pin of the integrated module in slave mode (such as the first integrated module 10a) is set to output, and the integrated module in the slave mode (such as the second integrated module 10b, the third integrated module 10c, the fourth integrated module The trigger pin of group 10d) is set as input.

For this reason, the power converter 1 proposed in the embodiment of the present application can use a single signal connection to achieve multi-phase control, thereby easily realizing phase number expansion.

In some embodiments, when the load of the power converter 1 suddenly changes, the compensation signal generated by the first compensator 113 will be temporarily boosted, causing the generation rate of the trigger signal of the first comparator 114 to be temporarily accelerated, thereby causing The state change rate of the state trigger signal is also temporarily accelerated. Please refer to Figure 7. It can be seen from the figure that when the compensation signal has a temporary boost, the generation rate of the trigger signal is temporarily accelerated, and the state change rate of the state trigger signal is also temporarily accelerated.

In some embodiments, in order to solve the problem of voltage drop caused by a sudden load change of the power converter 1, one of the trigger conditions in the status trigger signal can be preset as the multi-phase output control, that is, when the multi-phase output control occurs in the status trigger signal When, multiple phases in power converter 1 are turned on at the same time, that is, some phases in power converter 1 are turned on (for example, 1/2 or 1/3 of the total phases are turned on at the same time), then power converter 1 simultaneously emits Polyphase pulse signal.

It can be understood that to solve the above problem, one of the trigger conditions in the status trigger signal can also be preset as the all-phase output control. When all-phase output control appears in the status trigger signal, all phases in the power converter 1 are turned on at the same time, and the power supply Converter 1 outputs all-phase pulse signals at the same time. For example, please refer to Figure 8. The state trigger signal is preset to rise from the middle voltage level to the high voltage level as the trigger condition of the all-phase output. When the trigger condition of the all-phase output appears in the state trigger signal, the power converter All phases in 1 are turned on at the same time.

In some embodiments, the number of phases generated by the power converter 1 can be adjusted according to actual needs.

For example, please refer to Figure 9, which is a waveform diagram of each signal generated when the power converter 1 outputs a three-phase pulse signal. In some embodiments, the power converter 1 may include multiple integrated modules. The mode of one of the integrated modules is the main control mode. The status trigger signal generated by the integrated module in the main control mode is It can include three signal patterns, and the mode of other integrated modules is the slave mode, so that the power converter 1 can output three-phase pulse signals.

For another example, please refer to Figure 10, which is a waveform diagram of each signal generated when the power converter 1 outputs a two-phase pulse signal. In some embodiments, the power converter 1 may include multiple integrated modules. The mode of one integrated module is the master mode. The status trigger signal generated by the integrated module in the master mode may include two signal patterns. , the mode of other integrated modules is slave mode, and the power converter 1 can output two-phase pulse signals.

For another example, please refer to Figure 11, which is a waveform diagram of each signal generated when the power converter 1 outputs a single-phase pulse signal. In some embodiments, the power converter 1 may include multiple integrated modules, one of which is in the main control mode. The integrated module in the main control mode does not output a status trigger signal, so that the power converter 1 can Output single-phase pulse signal.

In some embodiments, when the integrated module is in the master mode, the integrated module may not perform phase output according to the status trigger signal. It can be understood that when the integrated module is in the main control mode, the status trigger signal may not include the trigger situation corresponding to the pulse signal generated by the integrated module.

In some embodiments, after the power converter 1 completes one cycle of pulse output, there is no need to input additional control signals to reset the power converter 1 before performing the next cycle of pulse output. The power converter 1 can directly proceed to the next cycle. One cycle of pulse output.

Please refer to FIG. 12 , which is a flow chart of a signal control method for multiple integrated modules proposed in an embodiment of the present application. In this embodiment, two integrated modules (the first integrated module 10a and the second integrated module 10b) are used as an example to introduce the signal control method of multiple integrated modules. The signal control method may include the following steps:

Step S1201: Provide multiple integrated modules and connect the trigger pins of each integrated module.

Specifically, the electrical connection between the trigger pins allows the integrated modules to be electrically connected for signal transmission.

Step S1202: Input the operation configuration to the integrated module to set the phase number of the power converter 1, the mode and phase sequence of each integrated module.

Among them, the phase sequence of each integrated module is composed of voltage level information and edge rise and fall information, and is integrated to form a corresponding signal pattern.

Specifically, in this embodiment, the power converter 1 is configured as a two-phase power converter by inputting the preset operation configuration into the first integrated module 10a and the second integrated module 10b. At the same time, the mode of the first integrated module 10a is set to the main control mode, and the phase sequence is the first phase. The mode of the second integrated module 10b is set to the slave mode, and the phase sequence is the second phase.

Step S1203: The first integrated module 10a generates a status trigger signal, and transmits the status trigger signal to the second integrated module through the first trigger pin.

In a specific embodiment, when the mode of the first integrated module 10a is the main control mode, the first feedback module 11a is used to generate a trigger signal. Taking the integrated module shown in Figure 2 as an example, the first feedback module 11a in the first integrated module 10a receives the output voltage of the capacitor C through the first feedback pin, and generates a trigger signal according to the output voltage of the capacitor C. .

Specifically, the first triangle wave generator 111 in the first feedback module 11a generates a triangle wave signal. The first error amplifier 112 in the first feedback module 11a compares the output voltage of the capacitor C with the reference voltage of the power converter 1 to obtain a voltage error and generate an error signal. The first compensator 113 in the first feedback module 11a receives the error signal generated by the first error amplifier 112 and compensates the error signal to generate a compensation signal. The first comparator 114 in the first feedback module 11a compares the triangle wave signal generated by the triangle wave generator 111 with the compensation signal generated by the first compensator 113 to generate a trigger signal.

Further, the first signal conversion module 12a in the first integrated module 10a receives the trigger signal from the first feedback module 11a and processes the trigger signal to generate a status trigger signal. In this embodiment, the first integrated module 10a includes a first trigger pin, and the second integrated module 10b includes a second trigger pin. The first trigger pin of the first integrated module 10a is electrically connected to the second integrated module. The second trigger pin of module 10b. It can be understood that the power converter 1 may also include other integrated modules. For example, the power converter 1 may also include a third integrated module and a fourth integrated module (as shown in FIG. 5 ).

Therefore, the first integrated module 10a can output the status trigger signal to the second integrated module 10b through the first trigger pin of the first integrated module 10a.

Specifically, the status trigger signal includes voltage level information and edge rise and fall information. The voltage level information is combined with the edge rise and fall information to form the phase sequence of the integrated module. The phase sequence of the integrated module is integrated to form the signal pattern of the status trigger signal. Furthermore, when the status trigger signal is input to each integrated module in the power converter 1, the power converter 1 controls the phase of each integrated module according to the signal pattern of the status trigger signal.

Step S1204: The second integrated module 10b receives the status trigger signal and processes the status trigger signal to generate a pulse signal.

In a specific embodiment, the second signal conversion module 12b of the second integrated module 10b receives the status transmitted by the first trigger pin of the first integrated module 10a through the second trigger pin of the second integrated module 10b. trigger signal, process the status trigger signal, and then transmit the processed status trigger signal to the second pulse generation module 13b of the second integrated module 10b.

Further, the second pulse generation module 13b generates a pulse signal according to the status trigger signal processed by the second signal conversion module 12b.

Step S1205: The second integrated module 10b outputs a pulse signal.

Specifically, after the second pulse generating module 13b generates the pulse signal, the second driving module 14b drives the second pulse signal to be output from the second output pin OUT-b.

The above signal control method is particularly suitable for phase control of the power converter 1 . By adopting such a design, the present application can utilize a single signal connection to achieve multi-phase control, thereby easily realizing expansion of the number of phases.

To sum up, the integrated modules in the power converter 1 proposed in this application are connected in parallel, and the integrated module set in the master mode uses a single status trigger signal to control the output of the integrated module set in the slave mode. pulse signal, so that each integrated module performs phase output according to the signal pattern of the status trigger signal, so that the power converter 1 generates a multi-phase pulse output. Moreover, each module and component in the integrated module in the power converter 1 is highly integrated and reasonably arranged, so that the volume occupied by the integrated module Smaller, so heat dissipation efficiency is high. And after the power converter 1 completes the pulse output of one cycle, it does not need to be reset and can directly perform the pulse output of the next cycle.

Persons of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present application and are not used to limit the present application. The above embodiments should only be modified within the scope of the essential spirit of the present application. Appropriate changes and variations should fall within the scope of protection claimed in this application.

1:Power converter

10a: First integrated module

10b: Second integrated module

C: Capacitor

Claims (9)

A power converter, characterized in that the power converter includes a plurality of integrated modules, and the plurality of integrated modules include a first integrated module and a second integrated module connected in parallel; the first integrated module The group includes a first trigger pin, the second integrated module includes a second trigger pin, the first trigger pin is electrically connected to the second trigger pin; the first integrated module is used to The trigger signal is encoded to generate a status trigger signal. The first integrated module is also used to generate a first pulse signal and transmit the status trigger signal to the second integrated module through the first trigger pin. Set; the second integrated module receives the status trigger signal transmitted by the first integrated module through the second trigger pin, and decodes the status trigger signal to generate a second pulse signal; Wherein, the state trigger signal includes voltage level information and edge rise and fall information, and the voltage level information and the edge rise and fall information are integrated to form a signal pattern of the state trigger signal; and the power converter operates according to the signal The pattern controls the phase of the integrated module. The power converter of claim 1, wherein the first integrated module includes a first input setting pin, the second integrated module includes a second input setting pin, and the first input setting pin The pin and the second input setting pin are used to input operation configuration to the first integrated module and the second integrated module respectively. The operation configuration includes the phase number of the power converter, all the The modes of the first integrated module and the second integrated module and the signal pattern. The power converter according to claim 1, wherein the first integrated module includes a first output pin and a first feedback pin, the second integrated module includes a second output pin; An output pin is connected to one end of the first inductor, and the other end of the first inductor is electrically connected to the capacitor; the second output pin is connected to one end of the second inductor, and the other end of the second inductor is electrically connected to the capacitor. The capacitor is electrically connected; the first feedback pin is electrically connected to the capacitor and is used to receive the output voltage of the capacitor; The first integrated module includes a first feedback module, the first feedback module is used to receive the output voltage of the capacitor through the first feedback pin, and generate the output voltage of the capacitor according to the output voltage of the capacitor. Describe the trigger signal. The power converter according to claim 3, wherein the first integrated module includes a first signal conversion module, and the first signal conversion module is used to receive the signal generated by the first feedback module. trigger signal, and encode the trigger signal into the state trigger signal according to the signal pattern; the second integrated module includes a second signal conversion module; the second signal conversion module Two trigger pins receive the status trigger signal and decode the status trigger signal according to the signal pattern to generate the second pulse signal. The power converter according to claim 4, wherein the first integrated module includes a first pulse generating module and a first driving module, and the first pulse generating module is used to generate the first pulse. signal, the first driving module is used to drive the first pulse signal output; the second integrated module includes a second pulse generating module and a second driving module, the second pulse generating module is used to After receiving the status trigger signal decoded by the second signal conversion module and generating the second pulse signal according to the decoded status trigger signal, the second driving module is used to drive the second Pulse signal output. A signal control method for multiple integrated modules, characterized in that the signal control method includes: providing multiple integrated modules, and the trigger pins of each integrated module are electrically connected to each other to transmit status trigger signals; wherein, The plurality of integrated modules are single-phase power converters, and the plurality of integrated modules are connected in parallel to form a power converter. The plurality of integrated modules include a first integrated module and a second integrated module. The first integrated module includes a first trigger pin, and the second integrated module includes a second trigger pin; input operating configurations to each of the integrated modules to set the phase number and the number of phases of the power converter. The mode and signal pattern of each integrated module are described; wherein, the mode of the first integrated module is set as the main control module formula, corresponding to the first phase of the signal pattern; setting the mode of the second integrated module to the slave mode, corresponding to the second phase of the signal pattern; the first integrated module encodes the trigger signal to Generate the status trigger signal and the first pulse signal, and transmit the status trigger signal to the second integrated module through the first trigger pin; the second integrated module uses the first trigger pin Two trigger pins receive the status trigger signal transmitted by the first integrated module and decode the status trigger signal to generate a second pulse signal; wherein the status trigger signal includes voltage level information and Edge rise and fall information, the voltage level information and the edge rise and fall information are integrated to form the signal pattern; and then the power converter performs phase control on the integrated module according to the signal pattern. The signal control method for multiple integrated modules as described in claim 6, wherein the signal control method further includes: the first integrated module encoding the trigger signal according to the signal pattern to generate the The state trigger signal; the second integrated module decodes the received state trigger signal according to the signal pattern; the second integrated module generates the second pulse according to the decoded state trigger signal signal; the second integrated module drives the second pulse signal output. An integrated module, the integrated module includes a single-phase power conversion circuit, characterized in that the integrated module includes an input setting pin and a trigger pin; the input setting pin is used to input operation configuration to the The integrated module; wherein the operation configuration includes the mode and signal pattern of the integrated module; the mode of the integrated module includes the master mode and the slave mode; wherein the setting pin input is Add one of the master mode and the slave mode to the integrated module to set the mode of the integrated module; When the mode of the integrated module is set to the main control mode, the integrated module encodes the trigger signal to generate a status trigger signal, and the trigger pin is used to output the status trigger signal; when the integrated module When the mode of the group is set to the slave mode, the trigger pin is used to input the status trigger signal, and the integrated module decodes the received status trigger signal to generate a corresponding pulse signal; wherein, the status The trigger signal includes voltage level information and edge rise and fall information, and the voltage level information and the edge rise and fall information are integrated to form the signal pattern. The integrated module according to claim 8, wherein a plurality of the integrated modules are connected in parallel to form a power converter, and the operation configuration further includes the phase number of the power converter.

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