Multi-period cycle-alternative switching mode power supply control device and its control method
First Claim
1. A multi-period cycle-alternative switching mode power supply control device, having a variable multi-period control cycle to effectively control certain power transfer components of specific nature and assure such component and the loading at its rear end can operate more efficiently in a reliable range of specific nature, said device comprising:
- a power transfer control, having an input terminal, and said input terminal inputting an error signal, and using the feedback error signal to regulate a duty width and obtain a regulated signal at the output terminal;
a dimming bias control, having one input terminal coupled to an output terminal of said power transfer control, and using a clock signal generated by said power transfer control as a reference source, while using another input end of said dimming bias control to input an electric potential of an error signal and change the timing relation of the clock signal, and obtaining a set of control timing of a standby mode;
a burst timing control, having an input terminal, and said input terminal having a dimming control input signal for comparing with a waveform signal generated by said burst timing control, and obtaining an ON_OFF control timing for selectively selecting a regulated signal outputted by said power transfer component and selecting the control timing of said dimming bias control, and being outputted from an output end of a steering logic control; and
a steering logic control, sending a regulated signal outputted from said power transfer control, a control timing outputted from said dimming bias control, and a timing outputted by said burst timing control in sequence to an ON_OFF signal at an output terminal of said burst timing control and being separated in different timing according to the sequence, and thus controlling an external component and then sending to a component at a loading terminal after being processed through said external component to control the action of the component at the loading terminal.
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Abstract
The present invention relates to a multi-period cycle-alternative switching mode power supply control device and its control method, and the device comprises: a power transfer control unit, a dimming bias control, a burst timing control, and a steering logic; and the method is a power control method that uses a burst timing control to produce an ON_OFF (High_Low) control timing, and after regulated power with a different amplitude is added to the OFF period of the burst period between two ON_OFF periods, two or more mixed periods are used to regulate the timing to a highly reliable and a broad dynamic range. The device of the invention can effectively control certain power transfer components of specific nature and assure that those components and the loading at the rear end can operate more efficiently in a reliable range of a specific nature.
13 Citations
16 Claims
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1. A multi-period cycle-alternative switching mode power supply control device, having a variable multi-period control cycle to effectively control certain power transfer components of specific nature and assure such component and the loading at its rear end can operate more efficiently in a reliable range of specific nature, said device comprising:
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a power transfer control, having an input terminal, and said input terminal inputting an error signal, and using the feedback error signal to regulate a duty width and obtain a regulated signal at the output terminal;
a dimming bias control, having one input terminal coupled to an output terminal of said power transfer control, and using a clock signal generated by said power transfer control as a reference source, while using another input end of said dimming bias control to input an electric potential of an error signal and change the timing relation of the clock signal, and obtaining a set of control timing of a standby mode;
a burst timing control, having an input terminal, and said input terminal having a dimming control input signal for comparing with a waveform signal generated by said burst timing control, and obtaining an ON_OFF control timing for selectively selecting a regulated signal outputted by said power transfer component and selecting the control timing of said dimming bias control, and being outputted from an output end of a steering logic control; and
a steering logic control, sending a regulated signal outputted from said power transfer control, a control timing outputted from said dimming bias control, and a timing outputted by said burst timing control in sequence to an ON_OFF signal at an output terminal of said burst timing control and being separated in different timing according to the sequence, and thus controlling an external component and then sending to a component at a loading terminal after being processed through said external component to control the action of the component at the loading terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling a multi-period cycle-alternative switching mode power supply control device, comprising the steps of:
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inputting a total power control regulate signal from an input end of a burst timing control unit; and
using at least two mixed cycles to a produce total power amplitude regulation control method with a high reliability and a wide dynamic range by means of an OFF period (TB) of two ON_OFF burst periods after adding a regulation control power of a different amplitude as to effectively control a power transfer component and assure the negative load of said power transfer component operating effectively in a specific reliable range. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification