High-compatibility power supply controller

Abstract

A high-compatibility power supply controller comprises a signal identification assembly, a switch driver and a switch assembly. The signal recognition assembly comprises a high-frequency signal recognizer, and the high-frequency signal recognizer receives a first input signal. And the switch driver is connected with the high-frequency signal recognizer. The switch assembly is connected with the switch driver. Wherein the high-frequency signal recognizer executes a counting program comprising a preset number of counting cycles within a preset time interval to detect the number of sine waves of the first input signal, and generates a conduction signal when the number of sine waves of any counting cycle is greater than or equal to a preset threshold value. The switch driver turns on the switch assembly according to the turn-on signal.

Description

Technical Field

[0001] The invention relates to a controller, in particular to a power supply controller with high compatibility. Background Art

[0002] Ballast-compatible lighting devices have been widely used in the market, but these lighting devices lack obvious technical improvements. For example, there is no obvious breakthrough in the functions of the controllers (control chips) of these lighting devices, which leads to the complexity of the driving circuits of these lighting devices, requiring the use of more electronic devices, making it difficult to improve the reliability of their driving power supplies. Since the complex driving circuits require a larger space to accommodate more electronic devices, it is not conducive to improving the miniaturization of the driving power supply. The above reasons have greatly increased the cost of these lighting devices.

[0003] In addition, these lighting devices require additional detection circuits to identify the signals of the ballast and perform related controls, which further increases the manufacturing costs of these lighting devices. Summary of the invention

[0004] According to one embodiment of the present invention, a highly compatible power controller is provided, which includes a signal recognition component, a switch driver and a switch component. The signal recognition component includes a high-frequency signal identifier, which receives a first input signal. The switch driver is connected to the high-frequency signal identifier. The switch component is connected to the switch driver. The high-frequency signal identifier executes a counting procedure including a preset number of counting cycles within a preset time interval to detect the number of sine waves of the first input signal, and generates a conduction signal when the number of sine waves in any counting cycle is greater than or equal to a preset threshold value. The switch driver turns on the switch component according to the conduction signal.

[0005] In one embodiment, the high-frequency signal identifier enters a deadlock state when the number of sine waves in each counting cycle is less than a preset threshold value to stop the counting process.

[0006] In one embodiment, the high-frequency signal identifier includes a counter, a timer, a resetter and an actuator. The resetter is connected to the counter and the timer. The actuator is connected to the counter and the timer. The timer controls the actuator to generate an execution signal to control the counter to execute a counting program to count the number of sine waves of the first input signal. The timer controls the time of each counting cycle, and controls the resetter to generate a reset signal at the end of each counting cycle to reset the counter for the next counting cycle.

[0007] In one embodiment, the timer controls the resetter to generate a deadlock signal at the end of a preset time interval to control the counter to enter a deadlock state.

[0008] In one embodiment, the conduction signal is a direct current signal.

[0009] In one embodiment, the power controller further includes a reference voltage generator, a current controller, a time controller, a peak current detector and a zero-crossing detector. The signal recognition component further includes a DC signal identifier. The DC signal identifier is connected to the reference voltage generator. The reference voltage generator is connected to the current controller. The current controller is connected to the time controller and the peak current detector. The time controller is connected to the zero-crossing detector, the peak current detector and the switch driver. The DC signal identifier receives the second input signal and outputs a DC identification signal to the reference voltage generator to generate a reference voltage when the second input signal is determined to be a DC signal. The current controller generates a current control signal based on the reference voltage and the peak current detection signal of the peak current detector. The time controller generates a first pulse width modulation signal based on the current control signal, the peak current detection signal and the zero-crossing detection signal of the zero-crossing detector to control the switch driver to control the switch component.

[0010] In one embodiment, the power controller further includes an impedance identifier. The signal identification component further includes an industrial frequency signal identifier. The industrial frequency signal identifier is connected to the impedance identifier. The impedance identifier is connected to a reference voltage generator. The industrial frequency signal identifier receives a second input signal, and when determining that the second input signal is an industrial frequency signal, outputs an industrial frequency identification signal to the reference voltage generator to generate a reference voltage. The current controller generates a current control signal according to the reference voltage and the peak current detection signal. The time controller generates a second pulse width modulation signal according to the current control signal, the peak current detection signal and the zero crossing detection signal to control the switch driver to control the switch component.

[0011] In one embodiment, the power controller further includes an overheat protector, which is connected to the reference voltage generator and transmits a thermal protection signal to the reference voltage generator to reduce the reference voltage when the overheat protector detects that the temperature is greater than the temperature threshold.

[0012] In one embodiment, the switch driver is a gate driver.

[0013] In one embodiment, the switch element is a gold oxide field effect transistor.

[0014] As described above, the high-compatibility power controller according to the embodiments of the present invention may have one or more of the following advantages:

[0015] (1) In one embodiment of the present invention, a power controller includes a signal recognition component, a switch driver and a switch component. The signal recognition component includes a high-frequency signal identifier, and the high-frequency signal identifier receives a first input signal. The switch driver is connected to the high-frequency signal identifier. The switch component is connected to the switch driver. The high-frequency signal identifier executes a counting program including a preset number of counting cycles within a preset time interval to detect the number of sine waves of the first input signal, and generates a conduction signal when the number of sine waves in any counting cycle is greater than or equal to a preset threshold value. The switch driver turns on the switch component according to the conduction signal to execute the ballast mode. Through the above-mentioned calculation mechanism and its special judgment logic, the power controller can effectively determine whether the first input signal is a ballast signal, and execute the ballast mode to drive the load when it is determined that the first input signal is a ballast signal. In this way, the power controller can be compatible with the ballast to meet the needs of practical applications.

[0016] (2) In one embodiment of the present invention, the high-frequency signal identifier of the power controller enters a deadlock state when the number of sine waves in each counting cycle is less than a preset threshold value to stop the counting process. Through the above-mentioned calculation mechanism and its special judgment logic, the calculation mechanism of the power controller can effectively determine whether the first input signal is noise, and enter a deadlock state without generating a conduction signal when the first input signal is determined to be noise (caused by poor contact of the external switch or other factors). In this way, the high-frequency signal identifier can effectively prevent the power controller from malfunctioning, so that the power controller can achieve high reliability.

[0017] (3) In one embodiment of the present invention, the high-frequency signal identifier of the power controller includes a counter, a timer, a resetter and an actuator. The resetter is connected to the counter and the timer. The actuator is connected to the counter and the timer. The timer controls the actuator to generate an execution signal to control the counter to execute a counting program to count the number of sine waves of the first input signal. The timer controls the time of each counting cycle, and at the end of each counting cycle, controls the resetter to generate a reset signal to reset the counter for the next counting cycle. Therefore, the high-frequency signal identifier can realize a high-efficiency counting program through a simple circuit design, so that the power controller can effectively determine whether the first input signal is noise or a ballast signal.

[0018] (4) In one embodiment of the present invention, the power controller further includes a reference voltage generator, a current controller, a time controller, a peak current detector, a zero-crossing detector and an impedance identifier. The signal recognition component further includes a DC signal identifier and an industrial frequency signal identifier. In this way, the power controller can also execute a mains mode or a DC power mode through the above components. Therefore, the power controller can be compatible with ballast, mains and DC power supplies (such as adapters, batteries, etc.) at the same time, and high compatibility can be achieved without the need for additional detection circuits. In addition, the complexity of the drive circuit is also reduced. Therefore, the power controller can be miniaturized and the manufacturing cost can be reduced.

[0019] (5) In one embodiment of the present invention, the switch component of the power controller may also be an external switch component. The power controller may have a port, and the switch driver is connected to the external switch component through the port. Therefore, the power controller may use a built-in switch component or an external switch component according to actual needs, so that the power controller can meet the needs of different applications.

[0020] (6) In one embodiment of the present invention, the power controller can be realized through a simple circuit design and operation mechanism, so that not only can the manufacturing cost be reduced, but also the desired effect can be achieved. In this way, the practicality of the power controller can be greatly improved. Therefore, the power controller has a wider range of applications and is more flexible in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 4 is a block diagram of a circuit structure of a high-compatibility power controller according to a first embodiment of the present invention.

[0022] Figure 2 It is a block diagram of the circuit structure of the high-frequency signal identifier of the high-compatibility power controller according to the first embodiment of the present invention.

[0023] Figure 3 FIG. 4 is a block diagram of a circuit structure of a high-compatibility power controller according to a second embodiment of the present invention.

[0024] Figure 4 FIG. 4 is a block diagram of a circuit structure of a high-compatibility power controller according to a third embodiment of the present invention.

[0025] Figure 5 FIG. 4 is a block diagram of a circuit structure of a high-compatibility power controller according to a fourth embodiment of the present invention.

[0026] Figure 6 FIG. 5 is a block diagram of a circuit structure of a high-compatibility power controller according to a fifth embodiment of the present invention.

[0027] Figure 7FIG. 4 is a block diagram of a circuit structure of a high-compatibility power controller according to a sixth embodiment of the present invention.

[0028] Figure 8 FIG. 4 is a circuit diagram of a lighting device driver with a power controller according to a sixth embodiment of the present invention.

[0029] Fig. 9 FIG. 1 is a schematic diagram of a lighting device driver with a power controller in a mains mode according to a sixth embodiment of the present invention.

[0030] Fig.10 FIG. 6 is a schematic diagram of a ballast mode of a lighting device driver with a power controller according to a sixth embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1, 1A, 1B, 1C, 1D, 1E, 1F-power controller; 11-signal identification component; 111-high frequency signal identifier; 1111-counter; 1112-timer; 1113-resetter; 1114-actuator; 12-switch driver; 13, 13'-switch component, 14-reference voltage generator; 15-current controller; 16-time controller; 17-peak current detector; 18-zero crossing detector; 19-impedance identifier; 20-overvoltage protector; 21-state identifier; 22- Power supply; 23-high voltage power supply; 24-reset controller; 25-overheat protector; CT-port; Is-input signal; Is1-first input signal; Is2-second input signal; Is3-third input signal; Is4-fourth input signal; 3-lighting device driver; 31-input module; 32-rectifier module; 33-drive control module; 331-control unit; 332-signal identification unit; 333-impedance identification detection unit; 334-DC signal smoothing unit; 34-power conversion module; 341 - switch unit; 342- sampling unit; 343- output unit; LD- load; LS- light source; P1- first input terminal; P2- second input terminal; P3- third input terminal; P4- fourth input terminal; BD1- first commutator; BD2- second commutator; F1- first fuse; F2- second fuse; F3- third fuse; Cp- capacitor; D1- first diode; D2- second diode; L1- inductor; C1- first capacitor; C2- second capacitor; C3- third capacitor; R1- first resistor; R2- The second resistor; R3-the third resistor; RS1-the first sampling resistor; RS2-the second sampling resistor; Q1-switch; LE-energy storage inductor; CE-electrolytic capacitor; MS-transistor; T1-the first output terminal; T2-the second output terminal; U1-controller; VB+-rectifier signal output terminal; N1-the first node; N2-the second node; N3-the third node; N4-the fourth node; N5-the fifth node; GND-grounding point; Lt1, Nt1, Lt, Nt-the output terminal of the AC power; GH-ballast; A1~A6 arrows.

[0033] The detailed features and advantages of the present invention are described in detail in the following embodiments, and the contents are sufficient to enable anyone skilled in the relevant art to understand the technical content of the present invention and implement it accordingly. Moreover, according to the contents, claims and drawings disclosed in this specification, any person skilled in the relevant art can easily understand the purposes and advantages of the present creation. DETAILED DESCRIPTION

[0034] The following will refer to the relevant drawings to illustrate the embodiment of the high-compatibility power controller according to the present invention. For the sake of clarity and convenience of the illustration, the components in the drawings may be exaggerated or reduced in size and proportion. In the following description and / or claims, when it is mentioned that a component is "connected" or "coupled" to another component, it may be directly connected or coupled to the other component or there may be an intervening component; and when it is mentioned that a component is "directly connected" or "directly coupled" to another component, there is no intervening component, and other words used to describe the relationship between components or layers should be interpreted in the same way. For ease of understanding, the same components in the following embodiments are illustrated with the same symbols.

[0035] See also Figure 1 , which is a block diagram of the circuit structure of the high-compatibility power controller of the first embodiment of the present invention. As shown in the figure, the power controller 1A includes a signal recognition component 11, a switch driver 12 and a switch component 13.

[0036] The signal identification component 11 includes a high-frequency signal identifier 111. The high-frequency signal identifier 111 receives a first input signal Is1.

[0037] The switch driver 12 is connected to the high-frequency signal identifier 111. In this embodiment, the switch driver 12 may be a gate driver. In another embodiment, the switch driver 12 may be a signal amplifier or other components with a signal amplification function.

[0038] The switch component 13 is connected to the switch driver 12. In this embodiment, the switch component 13 may be a metal oxide semi-conductor field effect transistor (MOSFET). In another embodiment, the switch component 13 may also be a bipolar junction transistor (BJT) or other similar components).

[0039] The high-frequency signal identifier 111 can execute a counting procedure including a preset number of counting cycles within a preset time interval to detect the number of sine waves of the first input signal Is1. The high-frequency signal identifier 111 can generate a conduction signal when the number of sine waves in any counting cycle is greater than or equal to a preset threshold value. The switch driver 12 turns on the switch component 13 according to the conduction signal. Then, the high-frequency signal identifier 111 enters a deadlock state to stop the counting procedure.

[0040] In contrast, when the number of sine waves in each counting cycle of the high-frequency signal identifier 111 is less than the preset threshold value, the high-frequency signal identifier 111 enters a deadlock state to stop the counting process.

[0041] Through the above-mentioned calculation mechanism and its special judgment logic, the power controller 1 can effectively judge whether the first input signal Is1 is the signal of the ballast GH. When the number of sine waves in any counting cycle is greater than or equal to the preset threshold value, the power controller 1 judges that the first input signal Is1 is the signal of the ballast GH, and generates a conduction signal to turn on the switch component 13 to output a DC signal. At this time, the power controller 1 executes the ballast mode. The above-mentioned conduction signal can be a DC signal to keep the switch component 13 in the conduction state.

[0042] In contrast, when the number of sine waves in each counting cycle is less than the preset threshold value, the switch driver 12 turns on the switch component 13 according to the conduction signal and determines that the first input signal Is1 is a signal of the ballast GH, and the power controller 1 determines that the first input signal Is1 is noise, which may be caused by poor contact of the external switch or other factors. At this time, the high-frequency signal identifier 111 enters a deadlock state and does not generate a conduction signal to prevent the power controller 1 from malfunctioning.

[0043] Of course, this embodiment is only used for illustration and does not limit the scope of the present invention. Equivalent modifications or changes made to the high-compatibility power controller 1 according to this embodiment should still be included in the patent scope of the present invention.

[0044] See also Figure 2 , which is a block diagram of the circuit structure of the high-frequency signal identifier of the high-compatibility power controller of the first embodiment of the present invention. As shown in the figure, the high-frequency signal identifier 111 includes a counter 1111, a timer 1112, a resetter 1113 and an actuator 1114.

[0045] The resetter 1113 is connected to the counter 1111 and the timer 1112. The counter 1111 and the timer 1112 are commonly used integrated circuits and can be implemented using any existing circuit design, so they are not described in detail here. The resetter 1113 can be a circuit having one or more of a resistor, a capacitor, and a diode.

[0046] The actuator 1114 is connected to the counter 1111 and the timer 1112. The resetter 1113 may be a circuit having one or more of a resistor, a capacitor and a diode.

[0047] As mentioned above, the high-frequency signal identifier 111 can execute a counting program within a preset time interval. The counting program includes a preset number of counting cycles. When the high-frequency signal identifier 111 receives the first input signal Is1, the timer 1112 controls the executor 1114 to generate an execution signal to control the counter 1111 to execute the counting program to count the number of sine waves of the first input signal Is1, and determines whether the number of sine waves in each counting cycle is greater than or equal to a preset threshold value. The timer 1112 controls the time of each counting cycle, and controls the resetter 1113 to generate a reset signal at the end of each counting cycle to reset the counter 1111 for the next counting cycle.

[0048] For example, the frequency threshold of the high-frequency signal identifier 111 is 20KHz. When the frequency is not lower than 20KHz, the high-frequency signal identifier 111 outputs a conduction signal to the switch driver 12, so that the switch driver 12 turns on the switch component 13 according to the conduction signal. In this case, the sine wave period of a single high-frequency signal is 50us. The timer 1112 sets a counting period of 200us, and the preset time interval is 2000us. Therefore, the counting program can include 10 counting periods, and the preset threshold value can be 4 (the preset threshold value can also be 3). When the number of sine waves in any counting period is greater than or equal to 4, the high-frequency signal identifier 111 can determine that the first input signal Is1 reaches the frequency threshold (20KHz), and outputs a conduction signal to the switch driver 12, so that the switch driver 12 turns on the switch component 13 according to the conduction signal to execute the ballast mode.

[0049] In contrast, when the number of sine waves in each counting cycle is less than 4, the high-frequency signal identifier 111 may determine that the first input signal Is1 does not reach the frequency threshold (20KHz), and it may be noise. At this time, the high-frequency signal identifier 111 enters a deadlock state and does not generate a conduction signal.

[0050] In another embodiment, the timer 1112 sets a counting cycle of 300us and a preset time interval of 1500us. Therefore, the counting procedure may include 5 counting cycles, and the preset threshold value may be 6 (the preset threshold value may also be 5). The above-mentioned sine wave cycle, counting cycle, preset time interval and preset threshold value are all examples, which may be changed according to actual needs.

[0051] Through the above circuit design, the high-frequency signal identifier 111 can implement a highly efficient counting procedure, so that the power controller 1 can effectively determine whether the first input signal Is1 is noise or a signal of the ballast GH, thereby preventing the power controller 1 from malfunctioning.

[0052] Of course, this embodiment is only used for illustration and does not limit the scope of the present invention. Equivalent modifications or changes made to the high-frequency signal identifier 111 according to this embodiment should still be included in the patent scope of the present invention.

[0053] See also Figure 3 , which is a block diagram of the circuit structure of a high-compatibility power controller of the second embodiment of the present invention. As shown in the figure, the power controller 1B includes a signal recognition component 11 and a switch driver 12. The signal recognition component 11 includes a high-frequency signal identifier 111. The switch driver 12 is connected to the high-frequency signal identifier 111. The functions of are the same as those of the above-mentioned embodiment, so they are not repeated here.

[0054] The functions of the above components are the same as those of the above embodiments, so they are not described in detail here. Different from the first embodiment, the power controller 1 further includes a port CT. The power controller 1 does not have a built-in switch component 13, but is connected to an external switch component 13' through the port CT.

[0055] Similarly, the power controller 1 can also execute the above-mentioned calculation mechanism and its judgment logic to effectively judge whether the first input signal Is1 is a signal of the ballast GH or noise. When the power controller 1 judges that the first input signal Is1 is a signal of the ballast GH, it executes the ballast mode to drive the load. Conversely, when the power controller 1 judges that the first input signal Is1 is noise, it enters a deadlock state and does not generate a conduction signal.

[0056] Of course, this embodiment is only used for illustration and does not limit the scope of the present invention. Equivalent modifications or changes made to the high-compatibility power controller 1 according to this embodiment should still be included in the patent scope of the present invention.

[0057] See also Figure 4 , which is a block diagram of the circuit structure of the high-compatibility power controller of the third embodiment of the present invention. As shown in the figure, the power controller 1C includes a signal recognition component 11, a switch driver 12 and a switch component 13. The signal recognition component 11 includes a high-frequency signal identifier 111.

[0058] Different from the first embodiment, the signal recognition component 11 further includes a DC signal identifier 112 and a power frequency signal identifier 113. In addition, the power controller 1 further includes a reference voltage generator 14, a current controller 15, a time controller 16, a peak current detector 17, a zero crossing detector 18, an impedance identifier 19, an overvoltage protector 20, a state identifier 21, a power supply 22, a high voltage power supply 23, a reset controller 24 and an overheating protector 25. The DC signal identifier 112, the power frequency signal identifier 113, the reference voltage generator 14, the current controller 15, the time controller 16, the peak current detector 17, the zero crossing detector 18, the impedance identifier 19, the overvoltage protector 20, the state identifier 21, the power supply 22, the high voltage power supply 23, the reset controller 24 and the overheating protector 25 have all been applied to the existing power controller, so the circuit structure thereof will not be described in detail here. In addition, in the present embodiment, the switch component 13 is a transistor MS, which is a metal oxide semi-field effect transistor.

[0059] The high voltage power supply 23 is connected to the power supply 22. The power supply 22 is connected to the reset controller 24 and the overvoltage protector 20. The overvoltage protector 20 is connected to the state identifier 21. The state identifier 21 is connected to the switch driver 12.

[0060] The high voltage power supply 23 divides the rectified DC voltage to generate a driving voltage. The power supply 22 steps down and maintains a constant voltage on the driving voltage. The reset controller 24 resets the components of the power controller 1 when the high voltage power supply 23 is powered on. The overvoltage protector 20 detects whether there is an overvoltage state or an undervoltage state to generate a state detection signal. The state identifier 21 restarts or locks the switch driver 12 according to the state detection signal.

[0061] The DC signal identifier 112 is connected to the reference voltage generator 14. The reference voltage generator 14 is connected to the current controller 15. The current controller 15 is connected to the time controller 16 and the peak current detector 17. The time controller 16 is connected to the zero crossing detector 18, the peak current detector 17 and the switch driver 12.

[0062] The DC signal identifier 112 receives the second input signal Is2, and outputs a DC identification signal to the reference voltage generator 14 to generate a reference voltage when the second input signal Is is determined to be a DC signal. The peak current detector 17 detects the peak current when the switch element 13 is turned on to generate a peak current detection signal. The current controller 15 generates a current control signal according to the reference voltage and the peak current detection signal of the peak current detector 17. The time controller 16 generates a first pulse width modulation signal according to the current control signal, the peak current detection signal and the third input signal Is3 of the zero-crossing detector 18 to control the switch driver 12 to control the switch element 13. This mode is a DC power mode (compatible with DC power sources such as adapters and batteries).

[0063] The power frequency signal identifier 113 is connected to the impedance identifier 19. The impedance identifier 19 is connected to the reference voltage generator 14. The power frequency signal identifier 113 receives the second input signal Is2, and outputs the power frequency identification signal to the impedance identifier 19 when determining that the second input signal Is2 is a power frequency signal. The impedance identifier 19 outputs the impedance identification signal to the reference voltage generator 14 according to the fourth input signal Is4 to generate a reference voltage. The current controller 15 generates a current control signal according to the reference voltage and the peak current detection signal. The time controller 16 generates a second pulse width modulation signal according to the current control signal, the peak current detection signal and the zero crossing detection signal to control the switch driver 12 to control the switch component 13. This mode is the AC mode (compatible with AC).

[0064] The overheat protector 25 detects the temperature of the power controller 1 , and transmits a thermal protection signal to the reference voltage generator 14 to reduce the reference voltage when the detected temperature is greater than a temperature threshold, thereby performing temperature regulation.

[0065] The power controller 1 can also execute the mains mode or the DC power mode through the above components. Therefore, the power controller 1 can be compatible with the ballast GH, the mains and the DC power supply (such as an adapter, a battery, etc.) at the same time, and can achieve high compatibility without the need for an additional detection circuit. In addition, the complexity of the driving circuit is also reduced. Therefore, the power controller 1 can be miniaturized and the manufacturing cost can be reduced.

[0066] Of course, this embodiment is only used for illustration and does not limit the scope of the present invention. Equivalent modifications or changes made to the high-compatibility power controller 1 according to this embodiment should still be included in the patent scope of the present invention.

[0067] See also Figure 5, which is a block diagram of the circuit structure of a high-compatibility power controller of the fourth embodiment of the present invention. As shown in the figure, the power controller 1D includes a signal recognition component 11, a switch driver 12, a reference voltage generator 14, a current controller 15, a time controller 16, a peak current detector 17, a zero-crossing detector 18, an impedance identifier 19, an overvoltage protector 20, a state identifier 21, a power supply 22, a high-voltage power supply 23, a reset controller 24 and an overheat protector 25. The signal recognition component 11 includes a high-frequency signal identifier 111, a DC signal identifier 112 and an industrial frequency signal identifier 113.

[0068] The functions of the above components are the same as those of the previous embodiment, so they are not described in detail here. Different from the third embodiment, the power controller 1 also includes a port CT. The power controller 1 does not have a built-in switch component 13, but is connected to an external switch component 13' through the port CT. In this embodiment, the switch component 13' is a transistor MS, which is a metal oxide semi-field effect transistor.

[0069] Of course, this embodiment is only used for illustration and does not limit the scope of the present invention. Equivalent modifications or changes made to the high-compatibility power controller 1 according to this embodiment should still be included in the patent scope of the present invention.

[0070] It is worth mentioning that there is no obvious breakthrough in the functions of the controllers (control chips) of the existing lighting devices, which makes the driving circuits of these lighting devices more complicated and requires the use of more electronic devices, making it difficult to improve the reliability of their driving power supplies. Since the complex driving circuit requires a larger space to accommodate more electronic devices, it is not conducive to improving the miniaturization of the driving power supply. The above reasons have greatly increased the cost of these lighting devices. In addition, the existing lighting devices require additional detection circuits to identify the signals of the ballast GH and perform related controls, which further increases the manufacturing cost of these lighting devices. In contrast, according to an embodiment of the present invention, the power controller 1 includes a signal recognition component 11, a switch driver 12 and a switch component 13. The signal recognition component 11 includes a high-frequency signal identifier 111, and the high-frequency signal identifier 111 receives a first input signal Is1. The switch driver 12 is connected to the high-frequency signal identifier 111. The switch component 13 is connected to the switch driver 12. The high-frequency signal identifier 111 executes a counting procedure including a preset number of counting cycles within a preset time interval to detect the number of sine waves of the first input signal Is1, and generates a conduction signal when the number of sine waves in any counting cycle is greater than or equal to a preset threshold value. The switch driver 12 turns on the switch component 13 according to the conduction signal to execute the ballast mode. Through the above-mentioned calculation mechanism and its special judgment logic, the power controller 1 can effectively determine whether the first input signal Is1 is a signal of the ballast GH, and execute the ballast mode to drive the load LD when it is determined that the first input signal Is1 is a signal of the ballast GH. In this way, the power controller 1 can be compatible with the ballast GH to meet the needs of practical applications.

[0071] According to an embodiment of the present invention, the high-frequency signal identifier 111 of the power controller 1 enters a deadlock state when the number of sine waves in each counting cycle is less than a preset threshold value to stop the counting process. Through the above-mentioned calculation mechanism and its special judgment logic, the calculation mechanism of the power controller 1 can effectively determine whether the first input signal Is1 is noise, and enter a deadlock state without generating a conduction signal when the first input signal Is1 is determined to be noise (caused by poor contact of the external switch or other factors). In this way, the high-frequency signal identifier 111 can effectively prevent the power controller 1 from malfunctioning, so that the power controller 1 can achieve high reliability.

[0072] Furthermore, according to an embodiment of the present invention, the high-frequency signal identifier 111 of the power controller 1 includes a counter 1111, a timer 1112, a resetter 1113 and an actuator 1114. The resetter 1113 is connected to the counter 1111 and the timer 1112. The actuator 1114 is connected to the counter 1111 and the timer 1112. The timer 1112 controls the actuator 1114 to generate an execution signal to control the counter 1111 to execute a counting program to count the number of sine waves of the first input signal Is1. The timer 1112 controls the time of each counting cycle, and controls the resetter 1113 to generate a reset signal at the end of each counting cycle to reset the counter 1111 for the next counting cycle. Therefore, the high-frequency signal identifier 111 can realize an efficient counting program through a simple circuit design, so that the power controller 1 can effectively determine whether the first input signal Is1 is noise or a signal of the ballast GH.

[0073] In addition, according to an embodiment of the present invention, the power controller 1 also includes a reference voltage generator 14, a current controller 15, a time controller 16, a peak current detector 17, a zero crossing detector 18 and an impedance identifier 19. The signal recognition component 11 also includes a DC signal identifier and an industrial frequency signal identifier. In this way, the power controller 1 can also execute the mains mode or the DC power mode through the above components. Therefore, the power controller 1 can be compatible with the ballast GH, the mains and the DC power supply (such as an adapter, a battery, etc.) at the same time, and high compatibility can be achieved without an additional detection circuit. In addition, the complexity of the drive circuit is also reduced. Therefore, the power controller 1 can be miniaturized and can reduce manufacturing costs.

[0074] In addition, according to an embodiment of the present invention, the switch component 13 of the power controller 1 may also be an external switch component 13'. The power controller 1 may have a port CT, and the switch driver 12 is connected to the external switch component 13' through the port CT. Therefore, the power controller 1 may use a built-in switch component 13 or an external switch component 13' according to actual needs, so that the power controller 1 can meet the needs of different applications.

[0075] Furthermore, according to the embodiment of the present invention, the power controller 1 can be realized through a simple circuit design and operation mechanism, so it can not only reduce the manufacturing cost, but also achieve the desired effect. In this way, the practicality of the power controller 1 can be greatly improved. Therefore, the application of the power controller 1 is more extensive and the use is more flexible. From the above, it can be seen that the highly compatible power controller 1 according to the embodiment of the present invention can indeed achieve excellent technical effects.

[0076] See also Figure 6, which is a block diagram of the circuit structure of the high-compatibility power controller of the fifth embodiment of the present invention. As shown in the figure, unlike the third embodiment, the signal recognition component 11 of the power controller 1E includes a high-frequency signal identifier 111 and a DC signal identifier 112, but does not include an industrial frequency signal identifier 113. In addition, the power controller 1E does not include an impedance identifier 19.

[0077] Of course, this embodiment is only used for illustration and does not limit the scope of the present invention. Equivalent modifications or changes made to the high-compatibility power controller 1 according to this embodiment should still be included in the patent scope of the present invention.

[0078] See also Figure 7 , which is a block diagram of the circuit structure of the high-compatibility power controller of the sixth embodiment of the present invention. As shown in the figure, different from the third embodiment, the signal recognition component 11 of the power controller 1F includes a high-frequency signal identifier 111 and an industrial frequency signal identifier 113, but does not include a DC signal identifier 112.

[0079] Of course, this embodiment is only used for illustration and does not limit the scope of the present invention. Equivalent modifications or changes made to the high-compatibility power controller 1 according to this embodiment should still be included in the patent scope of the present invention.

[0080] See also Figure 8 , which is a circuit diagram of a lighting device driver with a power controller according to a sixth embodiment of the present invention. Figure 8 The circuit structure of the lighting device driver 3 is illustrated by way of example. This embodiment is only an example, and the circuit structures of the input module 31, the rectifier module 32, the drive control module 33, and the power conversion module 34 can be changed according to actual needs, and the present invention is not limited thereto. As shown in the figure, the lighting device driver 3 includes an input module 31, a rectifier module 32, a drive control module 33, and a power conversion module 34.

[0081] The input module 31 includes a first input terminal P1 , a second input terminal P2 , a third input terminal P3 and a fourth input terminal P4 .

[0082] The rectifier module 32 is connected to the input module 31. The rectifier module 32 includes a first commutator BD1, a second commutator BD2, a first fuse F1, a second fuse F2, a third fuse F3 and a capacitor Cp. The first end of the first commutator BD1 is connected to the second input end P2; the second end of the first commutator BD1 is connected to the rectifier signal output end VB+; the third end of the first commutator BD1 is connected to the first input end P1 through the first fuse F1; the fourth end of the first commutator BD1 is connected to the first node N1. The first node N1 is connected to the ground point GND. The first end of the second commutator BD2 is connected to the fourth input end P4 through the third fuse F3; the second end of the second commutator BD2 is connected to the rectifier signal output end VB+; the third end of the second commutator BD2 is connected to the third input end P3 through the second fuse F2; the fourth end of the second commutator BD2 is connected to the ground point GND. In one embodiment, the first commutator BD1 and the second commutator BD2 may be bridge rectifiers (full-wave rectifiers or half-wave rectifiers). In another embodiment, the first commutator BD1 and the second commutator BD2 may also be triodes, circuits including triodes, or any existing circuits or electronic components with rectification functions.

[0083] The driving control module 33 is connected to the rectifier module 32. The driving control module 33 includes a control unit 331, a signal identification unit 332, an impedance identification detection unit 333 and a DC signal smoothing unit 334 which are connected to each other. The control unit 331 may have at least one signal identification interface and is connected to the signal identification unit 332 through the signal identification interface. The control unit 331 includes a controller U1, which may be the power controller 1D of the fourth embodiment (the power controller 1D of the fourth embodiment is connected to the external switch component 13'). The DC signal smoothing unit 334 includes a first diode D1, an inductor L1, a first capacitor C1 and a second capacitor C2. The positive electrode of the first diode D1 is connected to the rectified signal output terminal VB+; the negative electrode of the first diode D1 is connected to one end of the inductor L1, and is connected to the first node N1 through the first capacitor C1. The other end of the inductor L1 is connected to the second node N2, and is connected to the first node N1 through the second capacitor C2. The impedance identification detection unit 333 includes a plurality of resistors connected in series. In the present embodiment, the impedance identification detection unit 333 includes a first resistor R1 and a second resistor R2. The two ends of the first resistor R1 are respectively connected to the rectified signal output terminal VB+ and the control unit 131. The two ends of the second resistor R2 are respectively connected to the control unit 331 and the first node N1. The signal identification unit 332 includes a third capacitor C3, which is connected to the first input terminal P1 through the capacitor Cp, so that a part Is' of the input signal Is can be coupled to the third capacitor C3 (signal identification unit 332). In another embodiment, the control unit 331 can also be the power controller 1A of the first embodiment, the power controller 1B of the second embodiment, the power controller 1C of the third embodiment, the power controller 1E of the fifth embodiment, or the power controller 1F of the sixth embodiment.

[0084] The power conversion module 34 is connected to the control unit 331. The power conversion module 34 includes a switch unit 341, an output unit 343 and a sampling unit 342. The sampling unit 342 includes a first sampling resistor RS1 and a second sampling resistor RS2 connected in parallel. One end of the first sampling resistor RS1 is connected to the first node N1, and the other end of the first sampling resistor RS1 is connected to the third node N3. The switch unit 341 includes a switch Q1 (the switch unit 341 is the external switch component 13' of the fourth embodiment), which can be a gold oxide field effect transistor. In another embodiment, the switch Q1 can also be a triode or other similar components. The first end of the switch Q1 is connected to the control unit 331, the second end of the switch Q1 is connected to the third node N3, and the third end of the switch Q1 is connected to the fourth node N4; the third node N3 and the fourth node N4 are both connected to the control unit 331. The output unit 343 includes a second diode D2, an energy storage inductor LE, an electrolytic capacitor CE, a third resistor R3, a first output terminal T1 and a second output terminal T2. The anode and cathode of the second diode D2 are connected to the fourth node N4 and the second node N2, respectively. The two ends of the energy storage inductor LE are connected to the fourth node N4 and the fifth node N5, respectively. The two ends of the electrolytic capacitor CE are connected to the fifth node N5 and the second node N2, respectively. The two ends of the third resistor R3 are connected to the fifth node N5 and the second node N2, respectively. The second node N2 and the fifth node N5 are connected to the first output terminal T1 and the second output terminal T2, respectively.

[0085] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device driver 3 according to this embodiment should still be included in the patent scope of the present invention.

[0086] See also Fig. 9, which is a schematic diagram of the mains mode of the lighting device driver with a power controller according to the sixth embodiment of the present invention. As shown in the figure, the load LD includes a plurality of light sources LS, which may be light emitting diodes. The load LD is connected to the first output terminal T1 and the second output terminal T2 of the output unit 343. When the input module 31 is connected to the mains (Lt1, Nt1, Lt and Nt represent the output terminals of the mains), the input module 31 couples the external input signal Is, and the rectifier module 32 rectifies the input signal Is to generate a rectified signal. The impedance identification detection unit 333 of the drive control module 33 detects the impedance of the rectified signal, as shown by arrow A3 in the figure (the above signal is the second input signal Is2 of the fourth embodiment). The control unit 331 executes the mains mode when it is determined that the second input signal Is2 is an industrial frequency signal. The DC signal smoothing unit 334 converts the rectified signal into a smooth DC signal (for driving the high voltage power supply 23 of the fourth embodiment) to power the drive control module 33, as shown by arrow A4 in the figure. The sampling unit 342 of the power conversion module 34 generates a feedback signal according to the peak current when the switch unit 341 is turned on, and the control unit 331 adjusts the pulse width modulation signal according to the feedback signal (this feedback signal is input to the peak current detector 17 of the fourth embodiment) to control the power conversion module 34 to perform power conversion, as shown by the arrow A5 in the figure. In this case, the switch unit 341 will be continuously turned on and off, so the power conversion module 34 can perform the power conversion function. The control unit 331 can also receive a zero-crossing detection signal from the fourth node N4, as shown by the arrow A2 in the figure (the above signal is the third input signal Is3 of the fourth embodiment) to perform zero-crossing detection. The rectified signal drives the load LD through the power conversion module 34 (the switch unit 341, the output unit 343 and the sampling unit 342), and the path of the rectified signal is shown by the arrow A1 in the figure. The lighting device driver 3 can also execute the DC power supply mode.

[0087] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device driver 3 according to this embodiment should still be included in the patent scope of the present invention.

[0088] See also Fig.10, which is a schematic diagram of the ballast mode of the lighting device driver with a power controller according to the sixth embodiment of the present invention. As shown in the figure, the load LD includes a plurality of light sources LS, which can be light emitting diodes. The load LD is connected to the first output terminal T1 and the second output terminal T2 of the output unit 343. When the input module 31 is connected to the ballast GH, the input module 31 generates an input signal Is, and the rectifier module 32 rectifies the input signal Is to generate a rectified signal. Then, a part of the input signal Is is coupled to the signal identification unit 332 through the capacitor Cp of the rectifier module 32 (the above signal is the first input signal Is1 of the fourth embodiment), as shown by the arrow A6 in the figure. The control unit 331 enters the ballast mode when the counting program determines that the above signal is a signal of the ballast GH. The control unit 331 generates a DC signal in the ballast mode to control the switch tube of the power conversion module 34 to be directly turned on. In this case, the switch unit 341 can continuously maintain the on state to form a dead loop; in this way, the rectified signal generated after the signal input by the ballast GH is rectified can directly drive the load LD. The DC signal smoothing unit 334 converts the rectified signal into a smooth DC signal to power the drive control module 33, as shown by arrow A4 in the figure. The rectified signal is smoothed twice by the power conversion module 34 (switch unit 341, output unit 343 and sampling unit 342) and then drives the load LD. The path of the rectified signal Rs is shown by arrow A1 in the figure.

[0089] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device driver 3 according to this embodiment should still be included in the patent scope of the present invention.

[0090] In summary, according to an embodiment of the present invention, the power controller 1 includes a signal recognition component 11, a switch driver 12 and a switch component 13. The signal recognition component 11 includes a high-frequency signal identifier 111, and the high-frequency signal identifier 111 receives the first input signal Is1. The switch driver 12 is connected to the high-frequency signal identifier 111. The switch component 13 is connected to the switch driver 12. The high-frequency signal identifier 111 executes a counting program including a preset number of counting cycles within a preset time interval to detect the number of sine waves of the first input signal Is1, and generates a conduction signal when the number of sine waves in any counting cycle is greater than or equal to a preset threshold value. The switch driver 12 turns on the switch component 13 according to the conduction signal to execute the ballast mode. Through the above-mentioned calculation mechanism and its special judgment logic, the power controller 1 can effectively determine whether the first input signal Is1 is a signal of the ballast GH, and execute the ballast mode to drive the load LD when the first input signal Is1 is determined to be a signal of the ballast GH. In this way, the power controller 1 can be compatible with the ballast GH to meet the needs of practical applications.

[0091] According to an embodiment of the present invention, the high-frequency signal identifier 111 of the power controller 1 enters a deadlock state when the number of sine waves in each counting cycle is less than a preset threshold value to stop the counting process. Through the above-mentioned calculation mechanism and its special judgment logic, the calculation mechanism of the power controller 1 can effectively determine whether the first input signal Is1 is noise, and enter a deadlock state without generating a conduction signal when the first input signal Is1 is determined to be noise (caused by poor contact of the external switch or other factors). In this way, the high-frequency signal identifier 111 can effectively prevent the power controller 1 from malfunctioning, so that the power controller 1 can achieve high reliability.

[0092] Furthermore, according to an embodiment of the present invention, the high-frequency signal identifier 111 of the power controller 1 includes a counter 1111, a timer 1112, a resetter 1113 and an actuator 1114. The resetter 1113 is connected to the counter 1111 and the timer 1112. The actuator 1114 is connected to the counter 1111 and the timer 1112. The timer 1112 controls the actuator 1114 to generate an execution signal to control the counter 1111 to execute a counting program to count the number of sine waves of the first input signal Is1. The timer 1112 controls the time of each counting cycle, and controls the resetter 1113 to generate a reset signal at the end of each counting cycle to reset the counter 1111 for the next counting cycle. Therefore, the high-frequency signal identifier 111 can realize an efficient counting program through a simple circuit design, so that the power controller 1 can effectively determine whether the first input signal Is1 is noise or a signal of the ballast GH.

[0093] In addition, according to an embodiment of the present invention, the power controller 1 also includes a reference voltage generator 14, a current controller 15, a time controller 16, a peak current detector 17, a zero crossing detector 18 and an impedance identifier 19. The signal recognition component 11 also includes a DC signal identifier and an industrial frequency signal identifier. In this way, the power controller 1 can also execute the mains mode or the DC power mode through the above components. Therefore, the power controller 1 can be compatible with the ballast GH, the mains and the DC power supply (such as an adapter, a battery, etc.) at the same time, and high compatibility can be achieved without an additional detection circuit. In addition, the complexity of the drive circuit is also reduced. Therefore, the power controller 1 can be miniaturized and can reduce manufacturing costs.

[0094] In addition, according to an embodiment of the present invention, the switch component 13 of the power controller 1 may also be an external switch component 13'. The power controller 1 may have a port CT, and the switch driver 12 is connected to the external switch component 13' through the port CT. Therefore, the power controller 1 may use a built-in switch component 13 or an external switch component 13' according to actual needs, so that the power controller 1 can meet the needs of different applications.

[0095] Furthermore, according to the embodiment of the present invention, the power controller 1 can be realized through a simple circuit design and operation mechanism, so it can not only reduce the manufacturing cost, but also achieve the desired effect. In this way, the practicality of the power controller 1 can be greatly improved. Therefore, the power controller 1 has a wider application and is more flexible in use.

[0096] It should be noted that, although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the patent of the present invention.

Claims

1. A high-compatibility power controller, characterized in that: include: A signal recognition component, comprising a high-frequency signal recognizer, wherein the high-frequency signal recognizer is used to receive a first input signal; A switch driver connected to the high-frequency signal identifier; as well as A switch assembly connected to the switch driver; The high-frequency signal identifier is used to execute a counting program including a preset number of counting cycles within a preset time interval to detect the number of sine waves of the first input signal, and generate a conduction signal when the number of sine waves in any of the counting cycles is greater than or equal to a preset threshold value, and the switch driver is used to turn on the switch component according to the conduction signal.

2. The high-compatibility power controller according to claim 1, characterized in that: The high-frequency signal identifier is used to enter a deadlock state when the number of the sine waves in each counting cycle is less than a preset threshold value, so as to stop the counting process.

3. The high-compatibility power controller according to claim 1, characterized in that: The high-frequency signal identifier includes a counter, a timer, a resetter and an executor, wherein the resetter is connected to the counter and the timer, and the executor is connected to the counter and the timer. The timer is used to control the executor to generate an execution signal to control the counter to execute the counting program to calculate the number of sinusoidal waves of the first input signal. The timer is used to control the time of each counting cycle and control the resetter to generate a reset signal at the end of each counting cycle to reset the counter for the next counting cycle.

4. The high-compatibility power controller according to claim 3, characterized in that: The timer is used to control the resetter to generate a deadlock signal to control the counter to enter a deadlock state when the preset time interval ends.

5. The high-compatibility power controller according to claim 1, characterized in that: The conduction signal is a direct current signal.

6. The high-compatibility power controller according to claim 1, characterized in that: It also includes a reference voltage generator, a current controller, a time controller, a peak current detector and a zero-crossing detector. The signal identification component also includes a DC signal identifier, which is connected to the reference voltage generator, the reference voltage generator is connected to the current controller, the current controller is connected to the time controller and the peak current detector, the time controller is connected to the zero-crossing detector, the peak current detector and the switch driver. The DC signal identifier is used to receive a second input signal and output a DC identification signal to the reference voltage generator to generate a reference voltage when the second input signal is determined to be a DC signal. The current controller is used to generate a current control signal according to the reference voltage and the peak current detection signal of the peak current detector. The time controller is used to generate a first pulse width modulation signal according to the current control signal, the peak current detection signal and the zero-crossing detection signal of the zero-crossing detector to control the switch driver to control the switch component.

7. The high-compatibility power controller according to claim 6, characterized in that: It also includes an impedance identifier, and the signal identification component also includes an industrial frequency signal identifier, the industrial frequency signal identifier is connected to the impedance identifier, and the impedance identifier is connected to the reference voltage generator. The industrial frequency signal identifier is used to receive a second input signal, and when it is determined that the second input signal is an industrial frequency signal, it outputs an industrial frequency identification signal to the reference voltage generator to generate the reference voltage. The current controller is used to generate the current control signal according to the reference voltage and the peak current detection signal. The time controller is used to generate a second pulse width modulation signal according to the current control signal, the peak current detection signal and the zero-crossing detection signal to control the switch driver to control the switch component.

8. The high-compatibility power controller according to claim 6, characterized in that: It also includes an overheat protector, which is connected to the reference voltage generator. When the overheat protector detects that the temperature is greater than the temperature threshold value, it transmits a thermal protection signal to the reference voltage generator to reduce the reference voltage.

9. The high-compatibility power controller according to claim 1, characterized in that: The switch driver is a gate driver.

10. The high-compatibility power controller according to claim 1, characterized in that: The switch component is a gold oxide field effect transistor.

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