SYSTEM AND METHOD FOR CONTROLLING A CONVERTER
First Claim
Patent Images
1. A method for controlling a converter, including the cyclic actuation of a first switching element for applying an input voltage to an inductive storage element, and a second switching element, used as a first rectifier element in a rectifier arrangement, comprising:
- turning on the first switching element for a first on-period, during which the second switching element is off;
turning on the second switching element at the end of the first on-period or after the end of the first on-period for a second on-period;
monitoring a current flowing through the second switching element or the inductive storage element during the second on-period; and
terminating the second on-period after a change in the current direction of the current from a first current direction to an opposite second current direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for controlling a converter. One embodiment provides the cyclic actuation of a first switching element, used for applying an input voltage to an inductive storage element. A second switching element is used as a first rectifier element in a rectifier arrangement, in a step-up converter. An actuating circuit is provided for the first and second switching elements.
64 Citations
28 Claims
-
1. A method for controlling a converter, including the cyclic actuation of a first switching element for applying an input voltage to an inductive storage element, and a second switching element, used as a first rectifier element in a rectifier arrangement, comprising:
-
turning on the first switching element for a first on-period, during which the second switching element is off; turning on the second switching element at the end of the first on-period or after the end of the first on-period for a second on-period; monitoring a current flowing through the second switching element or the inductive storage element during the second on-period; and terminating the second on-period after a change in the current direction of the current from a first current direction to an opposite second current direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A step-up converter, comprising:
-
input terminals for applying an input voltage; output terminals for providing an output voltage; an inductive storage element coupled to the input terminals; a first switching element, coupled to apply the input voltage to the inductive storage element; a rectifier arrangement having a first capacitive storage element and a second switching element, coupled between the inductive storage element and the output terminals; a second capacitive storage element, coupled between the input terminals; and an actuating circuit for providing a first actuation signal for the first switching element and a second actuation signal for the second switching element. - View Dependent Claims (19, 20, 21)
-
-
22. A circuit comprising:
-
an actuating circuit configured for generating a first actuation signal for a first switching element, used for applying an input voltage to an inductive storage element, and a second actuation signal for a second switching element, used as a first rectifier element in a rectifier arrangement, in a converter; and wherein the actuating circuit is configured so that during an actuation cycle it generates an on-level for the first actuation signal for a first on-period and generates an off-level for the second actuation signal during this first on-period, generates an on-level for the second actuation signal at the end of the first on-period or after the end of the first on-period for a second on-period, and monitors a current flowing through the second switching element or the inductive storage element during the second on-period, and terminates the second on-period after a change in the current direction of this current from a first current direction to an opposite second current direction has been detected. - View Dependent Claims (23, 24, 25)
-
-
26. A step-up converter, comprising:
-
an inductive storage element coupled to input terminals; a first switching element comprising a transistor, coupled to apply an input voltage to the inductive storage element; a rectifier arrangement having a first capacitive storage element and a second switching element, coupled between the inductive storage element and output terminals; a second capacitive storage element, coupled between the input terminals; and an actuating circuit for providing a first actuation signal for the first switching element and a second actuation signal for the second switching element. - View Dependent Claims (27, 28)
-
Specification