Magnetic integrated circuit for multiphase interleaved flyback converter and controlling method thereof
First Claim
1. A two-phase interleaved flyback converter, comprising:
- an output capacitor having a first and a second terminals;
a transformer comprising;
a first primary winding having a first terminal selectively connected to a DC power source and a second terminal;
a first secondary winding having a first terminal connected to the output capacitor via a first switch and a second terminal;
a second primary winding having a first terminal and a second terminal selectively connected to the DC power source;
a second secondary winding having a first terminal and a second terminal connected to the output capacitor via a second switch; and
a magnetic coupled core device, wherein the first primary, the first secondary, the second primary and the second secondary windings are wound therein, and the first terminal of the first primary winding has a polarity the same to any of the first terminal of the first secondary winding, the first terminal of the second primary winding and the second terminal of the second secondary winding so as to eliminate a ripple of a channel current of the converter;
a first main circuit of a first flyback converter, comprising;
the first primary winding;
the first secondary winding;
the first switch having a first and a second terminals; and
a first diode having an anode and a cathode; and
a second main circuit of a second flyback converter, comprising;
the second primary winding;
the second secondary winding;
the second switch having a first and a second terminals; and
a second diode having an anode and a cathode, wherein the second terminal of the first primary winding is coupled to the first terminal of the first switch, the second terminal of the first switch is grounded, the first terminal of the second primary winding is coupled to the first terminal of the first primary winding, the second terminal of the second primary winding is coupled to the first terminal of the second switch, the second terminal of the second switch is grounded, the first terminal of the first secondary winding is coupled to the cathode of the first diode, the anode of the first diode is coupled to the first terminal of the output capacitor, the second terminal of the first secondary winding is coupled to the second terminal of the output capacitor, the first terminal of the second secondary winding is coupled to the cathode of the second diode, the anode of the second diode is coupled to the first terminal of the output capacitor, and the second terminal of the second secondary winding is coupled to the second terminal of the output capacitor.
1 Assignment
0 Petitions
Accused Products
Abstract
The configurations of an interleaved flyback converter and a controlling method thereof are provided. The proposed two-phase interleaved flyback converter includes a transformer including a first primary winding having a first terminal, a first secondary winding having a first terminal, a second primary winding having a second terminal, a second secondary winding having a second terminal and a magnetic coupled core device, wherein the first primary, the first secondary, the second primary and the second secondary windings are wound therein, and the first terminal of the first primary winding has a polarity the same as that of any of the first terminal of the first secondary winding, the second terminal of the second primary winding and the second terminal of the second secondary winding so as to eliminate a ripple of a channel current of the converter.
-
Citations
15 Claims
-
1. A two-phase interleaved flyback converter, comprising:
-
an output capacitor having a first and a second terminals; a transformer comprising; a first primary winding having a first terminal selectively connected to a DC power source and a second terminal; a first secondary winding having a first terminal connected to the output capacitor via a first switch and a second terminal; a second primary winding having a first terminal and a second terminal selectively connected to the DC power source; a second secondary winding having a first terminal and a second terminal connected to the output capacitor via a second switch; and a magnetic coupled core device, wherein the first primary, the first secondary, the second primary and the second secondary windings are wound therein, and the first terminal of the first primary winding has a polarity the same to any of the first terminal of the first secondary winding, the first terminal of the second primary winding and the second terminal of the second secondary winding so as to eliminate a ripple of a channel current of the converter; a first main circuit of a first flyback converter, comprising; the first primary winding; the first secondary winding; the first switch having a first and a second terminals; and a first diode having an anode and a cathode; and a second main circuit of a second flyback converter, comprising; the second primary winding; the second secondary winding; the second switch having a first and a second terminals; and a second diode having an anode and a cathode, wherein the second terminal of the first primary winding is coupled to the first terminal of the first switch, the second terminal of the first switch is grounded, the first terminal of the second primary winding is coupled to the first terminal of the first primary winding, the second terminal of the second primary winding is coupled to the first terminal of the second switch, the second terminal of the second switch is grounded, the first terminal of the first secondary winding is coupled to the cathode of the first diode, the anode of the first diode is coupled to the first terminal of the output capacitor, the second terminal of the first secondary winding is coupled to the second terminal of the output capacitor, the first terminal of the second secondary winding is coupled to the cathode of the second diode, the anode of the second diode is coupled to the first terminal of the output capacitor, and the second terminal of the second secondary winding is coupled to the second terminal of the output capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A controlling method for a multiphase interleaved flyback converter, comprising the steps of:
-
providing the converter with a transformer having a plurality of primary windings, each of which has a first terminal selectively connected to a DC power source and a second terminal, a plurality of secondary windings, each of which has a first terminal connected to an output capacitor, having a first terminal and a second terminal, via a switch and a second terminal, and a plurality of main circuits of flyback converters, each of which has the primary and the secondary windings, the switch and a diode, having a first primary winding and a second primary winding, a first secondary winding and a second secondary winding, a first switch and a second switch, each of which has a first terminal and a second terminal, and a first diode and a second diode, each of which has an anode and a cathode; causing the second terminal of the first primary winding coupled to the first terminal of the first switch, the second terminal of the first switch grounded, the first terminal of the second primary winding coupled to the first terminal of the first primary winding, the second terminal of the second primary winding coupled to the first terminal of the second switch, the second terminal of the second switch grounded, the first terminal of the first secondary winding coupled to the cathode of the first diode, the anode of the first diode coupled to the first terminal of the output capacitor, the second terminal of the first secondary winding coupled to the second terminal of the output capacitor, the first terminal of the second secondary winding coupled to the cathode of the second diode, the anode of the second diode coupled to the first terminal of the output capacitor, and the second terminal of the second secondary winding coupled to the second terminal of the output capacitor; and making the first terminal of the primary winding of a first one of the flyback converters has a polarity the same as that of any of the first terminal of the secondary winding of the first one of the flyback converters and all the second terminals of the primary and the secondary windings of the remaining flyback converters so as to eliminate a ripple of a channel current of the transformer. - View Dependent Claims (11, 12)
-
-
13. A two-phase interleaved flyback converter, comprising:
-
a first flyback converter having a first primary winding, an output capacitor having a first terminal and a second terminal; a first secondary winding, a first switch and a first diode; and a second flyback converter having a second primary winding, a second secondary winding, a second switch and a second diode, wherein each of the primary and secondary windings and switches has a first terminal and a second terminal, each of the diodes has an anode and a cathode, the second terminal of the first primary winding is coupled to the first terminal of the first switch, the second terminal of the first switch is grounded, the first terminal of the second primary winding is coupled to the first terminal of the first primary winding, the second terminal of the second primary winding is coupled to the first terminal of the second switch, the second terminal of the second switch is grounded, the first terminal of the first secondary winding is coupled to the cathode of the first diode, the anode of the first diode is coupled to the first terminal of the output capacitor, the second terminal of the first secondary winding is coupled to the second terminal of the output capacitor, the first terminal of the second secondary winding is coupled to the cathode of the second diode, the anode of the second diode is coupled to the first terminal of the output capacitor, the second terminal of the second secondary winding is coupled to the second terminal of the output capacitor, and the second secondary winding of the second flyback converter generates an output current when a current on the first primary winding of the first flyback converter is relatively increased. - View Dependent Claims (14, 15)
-
Specification