Efficient boost-buck converter and control method thereof
AssigneeSilergy Semiconductor Technology (Hangzhou) LTD
InventorWei Chen
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Abstract
In one embodiment, a boost-buck converter can include: (i) first and second switches coupled in series between input and an output of the boost-buck converter; (ii) a first inductor coupled to the input and third and fourth switches, where the third switch is coupled to ground, and the fourth switch is coupled to the output; (iii) a second inductor coupled to the output and a common node of the first and second switches; and (iv) a control circuit configured to control switching of the first, second, third, and fourth switches according to the input and output voltages, such that the boost-buck converter operates in at least one of: a buck mode and a boost mode.
Claims10
A method of controlling a boost-buck converter, the method comprising:
- a) receiving a voltage from an input of said boost-buck converter;
- b) receiving a voltage from an output of said boost-buck converter;
- c) controlling switching of first, second, third, and fourth switches according to said input and output voltages such that said boost-buck converter operates in at least one of:
- a buck mode and a boost mode;
- and
- d) wherein said boost-buck converter comprises said first and second switches coupled in series between said input and ground, a first inductor coupled to said input, said third switch coupled between said first inductor and ground, said fourth switch coupled between said first inductor and said output, and a second inductor coupled to a common node of said first and second switches and said output.
A boost-buck converter, comprising:
- a) first and second switches coupled in series between input and an output of said boost-buck converter;
- b) a first inductor coupled to said input and third and fourth switches, wherein said third switch is coupled to ground, and said fourth switch is coupled to said output;
- c) a second inductor coupled to said output and a common node of said first and second switches;
- and
- d) a control circuit configured to control switching of said first, second, third, and fourth switches according to said input and output voltages, such that said boost-buck converter operates in at least one of:
- a buck mode and a boost mode.
Dependencies are inferred from the claim text.