Resonant power conversion apparatus and controlling method thereof
First Claim
1. A resonant power conversion apparatus comprising:
- a switch-based resonant converter configured to supply power to a load; and
a controller coupled to the switch-based resonant converter and the load and configured to control switching of the switch-based resonant converter to regulate power conversion of the switch-based resonant converter,wherein the controller has a voltage control loop and a current control loop, the controller detects a driving state of the load, and enables one of the voltage control loop and the current control loop according to a result of detecting the driving state of the load to adjust a switching frequency of the switch-based resonant converter,wherein the controller detects a load current flowing through the load and a driving voltage applied to the load,when the controller determines the load current is smaller than a predetermined current, the controller enables the voltage control loop to adjust the switching frequency according to the driving voltage, andwhen the controller determines the load current is larger than or equal to the predetermined current, the controller enables the current control loop to adjust the switching frequency according to the load current.
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Abstract
A resonant power conversion apparatus and a controlling method of the resonant power conversion apparatus are provided. The resonant power conversion apparatus includes a switch-based resonant converter and a controller. The switch-based resonant converter is configured to supply power to a load. The controller is coupled to the switch-based resonant converter and the load and configured to control switching of the switch-based resonant converter to regulate power conversion of the switch-based resonant converter. The controller has a voltage control loop and a current control loop. The controller detects a driving state of the load and enables one of the voltage control loop and the current control loop according to the detection result to adjust a switching frequency of the switch-based resonant converter.
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Citations
13 Claims
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1. A resonant power conversion apparatus comprising:
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a switch-based resonant converter configured to supply power to a load; and a controller coupled to the switch-based resonant converter and the load and configured to control switching of the switch-based resonant converter to regulate power conversion of the switch-based resonant converter, wherein the controller has a voltage control loop and a current control loop, the controller detects a driving state of the load, and enables one of the voltage control loop and the current control loop according to a result of detecting the driving state of the load to adjust a switching frequency of the switch-based resonant converter, wherein the controller detects a load current flowing through the load and a driving voltage applied to the load, when the controller determines the load current is smaller than a predetermined current, the controller enables the voltage control loop to adjust the switching frequency according to the driving voltage, and when the controller determines the load current is larger than or equal to the predetermined current, the controller enables the current control loop to adjust the switching frequency according to the load current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A controlling method of a resonant power conversion apparatus, the resonant power conversion apparatus comprising a switch-based resonant converter and a controller, the controlling method comprising:
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controlling switching of the switch-based resonant converter, such that the switch-based resonant converter converts power and supplies the power to a load; detecting a driving state of the load by detecting a load current flowing through the load and a driving voltage applied to the load; and enabling one of a voltage control loop and a current control loop of the controller according to a result of detecting the driving state to adjust a switching frequency of the switch-based resonant converter by steps comprising; determining whether the load current is greater than or equal to a predetermined current; if the load current is smaller than the predetermined current, enabling the voltage control loop to adjust the switching frequency according to the driving voltage, and if the load current is larger than or equal to the predetermined current, enabling the current control loop to adjust the switching frequency according to the load current. - View Dependent Claims (10, 11, 12, 13)
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Specification