Switching-mode power supplies
AssigneeSmart Chip Microelectronic Co. Limited
InventorLoi Ying LIU
Life of this patent
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Abstract
A switching mode power control device (100) to operate a first electronic switch (Ml) to switch a power input (VIN) by switching to vary output power is provided, wherein the device (100) is to operate the first electronic switch (Ml) such that either an ON-voltage-pulse or an OFF-voltage-pulse will appear at an output terminal (SW) of the first switch (Ml), and the device (100) is to determine and/or control current output with reference to an output voltage at said output terminal (SW) of the first electronic switch (SW).
Claims21
1-18. (canceled)
A switching mode power control device comprising switching control circuitry which is to generate switching control signals to facilitate switching operations of an electronically switchable network to perform power conversion, the switching control signals comprising alternating high-state and low-state pulses;
- wherein the electronically switchable network has a switchable conduction path and an output on the switchable conduction path, the output being switchable between a high output state to correspond to a higher voltage output and a low output state to correspond to a lower voltage output, and to switch alternately between the high output state and the low output state in response to application of the switching control signals;
- wherein the switchable conduction path is defined between two conduction terminals of an electronic switch and the output is one of the two conduction terminals of the electronic switch which is switchable between the high output state and the low output state;
- and wherein the switching control circuitry is to set the switching control signals to set or vary current output to a load during operation with reference to output voltage information at the output of the switchable network.
A switching mode power supply comprising a power conversion bridge and a switching mode power control device;
- wherein the power conversion bridge comprises an electronically switchable network, the electronically switchable network comprising an electronic switch having an output which is switchable between a high output state to correspond to a higher voltage output and a low output state to correspond to a lower voltage output and to switch alternately between the high output state and the low output state in response to application of the switching control signals to facilitate power conversion during power conversion operations;
- wherein the switching mode power control device comprises switching control circuitry for generating switching control signals to facilitate switching operations of the power conversion bridge, the switching control signals comprising alternating high-state and low-state pulses;
- and wherein the switching control circuitry is to set the switching control signals to set or vary current output to a load during operation with reference to output voltage information at the output of the switchable network;
- and wherein an inductor is provided at the output to connect the output to a load and to facilitate delivery of load current to the load.
A method of operating a switching mode power supply having a power conversion bridge, the power conversion bridge comprising an electronically switchable network which includes at least one electronic switch which has an output terminal switchable between a high output state to correspond to a higher voltage output and a low output state to correspond to a lower voltage output and to switch alternately between the high output state and the low output state in response to application of the switching control signals to facilitate power conversion during power conversion operations;
- wherein the method comprises devising switching control signals to operate the power conversion bridge using output voltage information obtained at the output terminal of the power conversion bridge and to set output current.
Dependencies are inferred from the claim text.