ADJUSTABLE RESONANT BUCK CONVERTER
First Claim
1. A power converter comprising:
- a first circuit module including a switching element in parallel with a first diode;
a second circuit module including a first inductor and the first circuit module, the first inductor being in series with the first circuit module, the second circuit module including a first terminal coupled to a first power terminal;
a first capacitor in parallel with the second circuit module, the first capacitor including a first terminal coupled to the first terminal of the second circuit module and a second terminal coupled to a second terminal of the second circuit module, wherein the first capacitor is a variable capacitor, the first inductor is a variable inductor, or both the first capacitor and first inductor are variable;
a second diode including a first terminal and a second terminal, the first terminal in series with the second circuit module and the first capacitor, the second terminal coupled to a second power terminal; and
a control module for varying one or more of the first capacitor and the first inductor based on at least one of a current of a load circuit or an input voltage, wherein a resonating waveform generated by a resonant circuit of the second circuit is used by the control module to turn off the switching element under zero-current and zero-voltage conditions.
9 Assignments
0 Petitions
Accused Products
Abstract
A power converter includes first and second circuit modules, a first capacitor, a second diode and a control module. The first circuit module includes a switching element in parallel with a first diode. The second circuit module includes a first inductor and the first circuit module. The inductor is in series with the first circuit module. The first capacitor is in parallel with the second circuit module. The second diode includes a first terminal and a second terminal, where the first terminal is in series with the second circuit module and the first capacitor, and the second terminal is coupled to a second power terminal. The control module varies one or more of the first capacitor and the first inductor based on at least one of a current of a load circuit or an input voltage. A resonating waveform is generated by a resonant circuit of the second circuit and is used by the control module to turn off the switching element under zero-current and zero-voltage conditions.
54 Citations
21 Claims
-
1. A power converter comprising:
-
a first circuit module including a switching element in parallel with a first diode; a second circuit module including a first inductor and the first circuit module, the first inductor being in series with the first circuit module, the second circuit module including a first terminal coupled to a first power terminal; a first capacitor in parallel with the second circuit module, the first capacitor including a first terminal coupled to the first terminal of the second circuit module and a second terminal coupled to a second terminal of the second circuit module, wherein the first capacitor is a variable capacitor, the first inductor is a variable inductor, or both the first capacitor and first inductor are variable; a second diode including a first terminal and a second terminal, the first terminal in series with the second circuit module and the first capacitor, the second terminal coupled to a second power terminal; and a control module for varying one or more of the first capacitor and the first inductor based on at least one of a current of a load circuit or an input voltage, wherein a resonating waveform generated by a resonant circuit of the second circuit is used by the control module to turn off the switching element under zero-current and zero-voltage conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A control module for a power converter comprising:
-
a first terminal for controlling a switching element, the switching element in parallel with a first diode defining a first circuit module; a second terminal for controlling a plurality of parallel inductors, the plurality of parallel inductors in series with the first circuit module, the first circuit module and the plurality of parallel inductors defining a second circuit module, the second circuit module including a first terminal coupled to a first power terminal and a second terminal coupled to a second diode; and a third terminal for controlling a plurality of parallel capacitors, each of the plurality of capacitors including a terminal coupled to the first terminal of the second circuit module and a second terminal coupled to the second terminal of the second circuit module, wherein the control module is adapted to vary the plurality of capacitors and the plurality of inductors based on at least one of a current of a load circuit or an input voltage, and to turn off the switching element under zero-current and zero-voltage conditions by adjusting a resonating waveform generated by a resonant circuit that is formed by the plurality of capacitors and the plurality of inductors. - View Dependent Claims (17, 18, 19, 20, 21)
-
Specification