Method for transmitting and receiving instruction between master controller and slave controller of power converter
A technology of power converters and main controllers, which is applied in the direction of high-efficiency power electronic conversion, output power conversion devices, electrical components, etc., and can solve the problems of limited functions such as sending and receiving instructions.
Active Publication Date: 2020-10-27
LEADTREND TECH
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Problems solved by technology
However, the prior art only provides a method of sending and receiving instructions with limited functions, so how to provide a method of sending and receiving instructions that is simple in operation and covers multiple instructions has become an important issue in the design trend of the power converter
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[0044] Please refer to figure 1 , figure 1 It is a schematic diagram of a master controller (master controller) 202 and a slave controller (slave controller) 204 for the power converter 100 disclosed in the first embodiment of the present invention. like figure 1 As shown, the power converter 100 includes a pulse width modulation (pulse width modulation, PWM) stage circuit 102 and a power factor correction (power factor correction, PFC) stage circuit 104, wherein the pulse width modulation stage circuit 102 can be a flyback (flyback) circuit or an inductance-inductance-capacitance resonant circuit (LLC resonant circuit), the pulse width modulation stage circuit 102 is used to convert an AC voltage VAC to a DC voltage VDC, and the power factor correction stage circuit 104 is used to The conversion efficiency of the power converter 100 is improved. In addition, the pulse width modulation stage circuit 102 and the power factor correction stage circuit 104 are well known to tho...
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The invention discloses a method for transmitting and receiving an instruction between a master controller and a slave controller of a power converter. The instruction transmitting and receiving method comprises the steps that the master controller and the slave controller are started; one of the master controller and the slave controller detects node voltage on a pin of the controller; when the node voltage is less than a preset voltage, the controller transmits one first instruction in a plurality of first instructions to the other controller in the master controller and the slave controllerthrough the pin, wherein the preset voltage is related to over-temperature protection of the power converter; and after the controller receives a first return signal transmitted by the other controller, the controller detects the node voltage again. Therefore, compared with the prior art, the instruction transmitting and receiving method has the advantages that the operation is simple, a plurality of instructions are covered, and the master controller and the slave controller do not need extra pins to execute the instruction transmitting and receiving method.
Description
technical field [0001] The invention relates to a method for sending and receiving instructions for a power converter, in particular to a method for sending and receiving instructions between a master controller and a slave controller of the power converter. Background technique [0002] In the prior art, because the design trend of power converters applied to TVs gradually adopts the design without flyback standby, the power converters only consist of a pulse width modulation (PWM) stage circuit And a power factor correction (power factor correction, PFC) stage circuit. Therefore, the power converter needs to be controlled by a master controller and a slave controller, wherein the master controller controls the PWM stage circuit and the slave controller controls the A power factor correction stage circuit, and the master controller and the slave controller are separated from each other. [0003] Because the master controller and the slave controller are separated from eac...
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IPC IPC(8): H02M7/04H02M1/42
CPCH02M1/4208H02M7/04Y02B70/10
Inventor 陈耀宗周冠贤
Owner LEADTREND TECH