阅读说明：本技术 一种具有多模式配置功能的智能功率模块 (Intelligent power module with multi-mode configuration function ) 是由 刘宁 王迎发 李庆华 刘侨林 陈扬 那晶晶 秦超 于 2020-07-14 设计创作，主要内容包括：本发明提供了一种具有多模式配置功能的智能功率模块,属于智能功率模块技术领域。其包括三相桥及驱动电路,还包括多模式配置电路,所述多模式配置电路包括信号分路电路、第一数据选择电路、第二数据选择电路以及死区延迟电路,第一数据选择电路具有第一控制引脚,第二数据选择电路具有第二控制引脚。本发明可根据需要将智能功率模块灵活配置成互补模式、双极性模式和通用模式三种工作模式,降低了电路设计和调制策略的复杂性,节省了微处理器的外设资源。同时,还保留了传统智能功率模块的工作模式,提高了应用的兼容性。(The invention provides an intelligent power module with a multi-mode configuration function, and belongs to the technical field of intelligent power modules. The multi-mode configuration circuit comprises a signal shunt circuit, a first data selection circuit, a second data selection circuit and a dead zone delay circuit, wherein the first data selection circuit is provided with a first control pin, and the second data selection circuit is provided with a second control pin. The invention can flexibly configure the intelligent power module into three working modes, namely a complementary mode, a bipolar mode and a general mode according to requirements, reduces the complexity of circuit design and modulation strategies, and saves the peripheral resources of the microprocessor. Meanwhile, the working mode of the traditional intelligent power module is kept, and the compatibility of application is improved.)

1. An intelligent power module with a multi-mode configuration function comprises a three-phase bridge and a driving circuit; the multi-mode configuration circuit is characterized by further comprising a multi-mode configuration circuit, wherein the multi-mode configuration circuit comprises a signal shunt circuit, a first data selection circuit and a second numberThe circuit comprises a data selection circuit and a dead zone delay circuit, wherein the first data selection circuit is provided with a first control pin, and the second data selection circuit is provided with a second control pin; the signal shunting circuit controls an externally input 6-path switching tube to control a signal U on one hand_p、U_n、V_p、V_n、W_p、W_nDirectly to the first data selection circuit, and on the other hand to U_p、V_pTo a dead time delay circuit, and further passes W_pAnd V inverted by NOT gate_pTo a second data selection circuit; the second data selection circuit selects two paths of signals sent by the signal shunt circuit according to the level of the second control pin and selects a selected signal W_psOutputting the signal to a dead zone delay circuit; dead time delay circuit will U_p、V_pAnd W_psRespectively carrying out delay and inversion, and outputting three groups of complementary signals U containing dead zones_ppAnd U_pn、V_ppAnd V_pn、W_pspAnd W_psnTo the first data selection circuit; the first data selection circuit selects between the signal sent by the signal shunt circuit and the signal sent by the dead zone delay circuit according to the level of the first control pin, and outputs the selected signal to the three-phase bridge and the driving circuit.

2. The smart power module as claimed in claim 1, wherein the first data selection circuit comprises six data selection modules, and the six data selection modules respectively correspond to the number of U_pAnd U_pp、U_nAnd U_pn、V_pAnd V_pp、V_nAnd V_pn、W_pAnd W_psp、W_nAnd W_psnSelecting signals and respectively outputting drive control signals U_pd、U_nd、V_pd、V_nd、W_pd、W_ndEach data selection module is controlled by a first control pin.

3. Intelligent power with multimode configuration function as recited in claim 1The second data selection circuit comprises 1 data selection module, and the data selection module is coupled to W_pV inverted by NOT gate_pAnd selecting signals and controlling the signals by a second control pin.

4. The smart power module with multi-mode configuration function of claim 1, wherein said dead-time delay circuit comprises three dead-time delay modules, one for each of U_p、V_pAnd W_psDelay and invert, and output three sets of complementary signals U containing dead zone_ppAnd U_pn、V_ppAnd V_pn、W_pspAnd W_psn。

Technical Field

The invention belongs to the technical field of intelligent power modules, and particularly relates to an intelligent power module with a multi-mode configuration function.

Background

An Intelligent Power Module (IPM) is an advanced Power switch device, and has the advantages of high current density, high voltage resistance, high input impedance, high switching frequency and low driving Power. And logic, control, detection and protection circuits are integrated in the intelligent power module, so that the intelligent power module is convenient to use, the volume and development time of a system are reduced, the reliability of the system is greatly enhanced, the intelligent power module is suitable for the development direction of the current power device, and the intelligent power module is more and more widely applied to the field of power electronics.

With the continuous development of power electronic technology, the modularization, composition and integration requirements of the intelligent power module are increasing, and the traditional intelligent power module design is increasingly difficult to meet the requirements. For example, the current type of the circuit configuration in which the intelligent power module is applied more is C-type (6 switching tubes are packaged inside), and the main application mode of the intelligent power module of the circuit configuration is as an H-bridge or a three-phase bridge, and the intelligent power module is generally controlled by a Pulse Width Modulation (PWM) mode. For the control of the traditional intelligent power module, 4 paths of PWM signals are required to be input in an H-bridge mode; in the three-phase bridge mode, 6 signals need to be input. Meanwhile, in order to ensure strong and weak current separation and reduce interference, each path of PWM signal needs to be connected with the intelligent power module through devices such as a photoelectric isolation chip or an optical fiber and the like. However, in practical application, according to application requirements and a selected modulation strategy, the number of effective PWM signals required to be input can be reduced, wherein for an H-bridge adopting a bipolar PWM control strategy, only 1 path of PWM signals is theoretically required; for the H bridge of the unipolar PWM control strategy, only 2 paths of PWM signals are theoretically needed; for a three-phase bridge controlled by SVPWM/SPWM, only 3 paths of PWM signals are theoretically needed. Obviously, the traditional smart power module requires more peripheral circuit designs in practical application, which not only increases the complexity of circuit design and modulation strategy, but also occupies more peripheral resources of the microprocessor.

Disclosure of Invention

Aiming at the defects of the traditional intelligent power module, the invention provides the intelligent power module with the multi-mode configuration function, the PWM input can be flexibly configured according to the application requirement, the complexity of the peripheral circuit design and the modulation strategy of the intelligent power module is reduced, and the design and control cost is saved.

In order to achieve the purpose, the invention adopts the technical scheme that:

an intelligent power module with a multi-mode configuration function comprises a three-phase bridge and a driving circuit; in addition, the multi-mode configuration circuit comprises a signal shunt circuit, a first data selection circuit, a second data selection circuit and a dead zone delay circuit, wherein the first data selection circuit is provided with a first control pin, and the second data selection circuit is provided with a second control pin; the signal shunting circuit controls an externally input 6-path switching tube to control a signal U on one hand_p、U_n、V_p、V_n、W_p、W_nDirectly to the first data selection circuit, and on the other hand to U_p、V_pTo a dead time delay circuit, and further passes W_pAnd V inverted by NOT gate_pTo a second data selection circuit; the second data selection circuit selects two paths of signals sent by the signal shunt circuit according to the level of the second control pin and selects a selected signal W_psOutputting the signal to a dead zone delay circuit; dead time delay circuit will U_p、V_pAnd W_psRespectively carrying out delay and inversion, and outputting three groups of complementary signals U containing dead zones_ppAnd U_pn、V_ppAnd V_pn、W_pspAnd W_psnFor the first data selection circuit(ii) a The first data selection circuit selects between the signal sent by the signal shunt circuit and the signal sent by the dead zone delay circuit according to the level of the first control pin, and outputs the selected signal to the three-phase bridge and the driving circuit.

Further, the first data selection circuit comprises six data selection modules, and the six data selection modules respectively correspond to U_pAnd U_pp、U_nAnd U_pn、V_pAnd V_pp、V_nAnd V_pn、W_pAnd W_psp、W_nAnd W_psnSelecting signals and respectively outputting drive control signals U_pd、U_nd、V_pd、V_nd、W_pd、W_ndEach data selection module is controlled by a first control pin.

Further, the second data selection circuit comprises 1 data selection module, and the data selection module is coupled to W_pV inverted by NOT gate_pAnd selecting signals and controlling the signals by a second control pin.

Further, the dead-time delay circuit comprises three dead-time delay modules, and the three dead-time delay modules respectively correspond to the U_p、V_pAnd W_psDelay and invert, and output three sets of complementary signals U containing dead zone_ppAnd U_pn、V_ppAnd V_pn、W_pspAnd W_psn。

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can flexibly configure the working mode of the intelligent power module according to the actual requirement. For an H bridge adopting a bipolar PWM control strategy, only 1 path of PWM signals is needed; for the H bridge of the unipolar PWM control strategy, only 2 paths of PWM signals are needed; for a three-phase bridge controlled by SVPWM/SPWM, only 3 paths of PWM signals are needed.

2. The invention reduces the complexity of circuit design and modulation strategy, and saves the peripheral resources of the microprocessor.

3. The invention keeps the working mode of the traditional intelligent power module and improves the compatibility of the application.

Drawings

Fig. 1 is a schematic diagram of an overall structure of an intelligent power module according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the multi-mode configuration circuit of fig. 1.

Fig. 3 is a schematic diagram of the structure of a single data selection block in the first and second data selection circuits.

Fig. 4 is a schematic diagram of a single dead time delay module in a dead time delay circuit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, an intelligent power module with a multi-mode configuration function includes a three-phase bridge and a driving circuit; also included is a multi-mode configuration circuit comprising a signal splitting circuit, a first data selection circuit having a first control pin A0, a second data selection circuit having a second control pin A1, and a dead time delay circuit; the signal shunting circuit controls an externally input 6-path switching tube to control a signal U on one hand_p、U_n、V_p、V_n、W_p、W_nDirectly to the first data selection circuit, and on the other hand to U_p、V_pTo a dead time delay circuit, and further passes W_pAnd V inverted by NOT gate_pTo a second data selection circuit; the second data selection circuit selects two paths of signals sent by the signal shunting circuit according to the level of a second control pin A1 and selects a selected signal W_psOutputting the signal to a dead zone delay circuit; dead time delay circuit will U_p、V_pAnd W_psRespectively carrying out delay and inversion, and outputting three groups of complementary signals U containing dead zones_ppAnd U_pn、V_ppAnd V_pn、W_pspAnd W_psnTo the first data selection circuit; the first data selection circuit performs a signal division between a signal supplied from the signal dividing circuit and a signal supplied from the dead time delay circuit according to a level of the first control pin A0And selecting and outputting the selected signal to the three-phase bridge and the driving circuit.

The intelligent power module is added with a multi-mode configuration circuit part inside the existing intelligent power module, and the part controls a signal U of a 6-way switching tube of the intelligent power module according to the level states of a mode setting pin A1 and a0_p、U_n、V_p、V_n、W_p、W_nAnd processing, and controlling the power switch tube by using the output processed signal so as to realize setting of different working modes.

As shown in fig. 2, the first data selection circuit 1 includes 6 data selection modules, the second data selection circuit 2 includes 1 data selection module, the dead time delay circuit includes 3 dead time delay modules, the circuit diagram of a single data selection module is shown in fig. 3, and the circuit diagram of a single dead time delay module is shown in fig. 4. When the control pin A0 is high, the data selection circuit 1 asserts the control signal U_p、U_n、V_p、V_n、W_p、W_nThereby, the configuration of the common mode is realized. When the control pin A0 is low, the first data selection circuit 1 enables the control signal U_pp、U_pn、V_pp、V_pn、W_psp、W_psnBy the way, at this time, the intelligent power module is in a non-universal mode state, specifically needs to be configured according to the pin A1, and when the pin A1 is at a high level, the W is at a low level_ps=W_pDead zone delay circuit U_p、V_p、W_psThe three signals are delayed and inverted to respectively generate U_ppAnd U_pn、V_ppAnd V_pn、W_pspAnd W_psnThe complementary signal of (1), this time in complementary mode; when pin A1 is low, W_psIs a V_pBy the control signal V_pTherefore, the bipolar PWM control of the H bridge composed of V, W bridge arms can be realized, so the control is in a bipolar mode.

According to the intelligent power module with the multi-mode configuration function, the mode setting pins are configured, so that the working modes meeting various application requirements can be obtained. Specifically, the operation modes include three operation modes, i.e., a complementary mode, a bipolar mode, and a general mode. The complementary mode is that the upper power tube and the lower power tube of each bridge arm are controlled by complementary PWM, and in the mode, the dead zone control is realized in the intelligent power module through a hardware circuit, so that each bridge arm can realize the control of the upper tube and the lower tube only by one path of PWM signal; the bipolar mode is based on an intelligent power module to realize H-bridge bipolar control, and the mode can control the H-bridge to realize positive and negative modulation voltage output only by inputting one path of PWM signals; the general mode means that all power tubes can be controlled independently, and the application method of the mode is the same as that of the traditional intelligent power module.

The number of the mode setting pins is two, namely A1 and A0, and the setting of different working modes of the intelligent power module can be realized by configuring the levels of the pins A1 and A0. Definition 1 represents a high level, and 0 represents a low level, when (a 1 a 0) = (10), the corresponding complementary pattern; when (a 1 a 0) = (00), a bipolar mode is corresponding; when (a 1 a 0) = (01) or (11), a general mode is corresponding. The default mode is the general mode.

In conclusion, the intelligent power module can be flexibly configured into three working modes, namely a complementary mode, a bipolar mode and a general mode according to requirements. In a complementary mode, only 2 paths of PWM signals are needed for an H bridge of a unipolar PWM control strategy; for a three-phase bridge controlled by SVPWM/SPWM, only 3 paths of PWM signals are needed. In bipolar mode, only 1 way of PWM signal is needed for the H-bridge using bipolar PWM control strategy. The invention reduces the complexity of circuit design and modulation strategy, and saves the peripheral resources of the microprocessor. Meanwhile, the working mode, namely the universal mode, of the traditional intelligent power module is also reserved, and the compatibility of application is improved.