DC transformer with an output inductance integrated on a magnetic core thereof and a DC/DC converter employing the same
First Claim
1. A DC transformer comprising:
- a magnetic core comprising a first leg, a second leg having a first air gap, and a third leg having a second air gap;
a primary winding wound around the magnetic core;
a first secondary winding wound around the first leg and the second leg for generating a first inductance by the first air gap of the magnetic core; and
a second secondary winding wound around the first leg and the third leg for generating a second inductance by the second air gap of the magnetic core, wherein the number of windings of the first secondary winding wound around the first leg is more than the number of windings of the first secondary winding wound around the second leg, and the number of windings of the second secondary winding wound around the first leg is more than the number of windings of the second secondary winding wound around the third leg.
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Accused Products
Abstract
A DC/DC converter includes an input filter, a half-bridge converter without PWM (Pulse Width Modulation) control function, a synchronous rectifier, an output capacitor, and a DC transformer. The DC transformer includes a magnetic core, a primary winding, a first secondary winding, and a second secondary winding. The magnetic core of the DC transformer includes a first leg, a second leg having a first air gap, and a third leg having a second air gap. The first secondary winding is wound on the first leg and the second leg, and induces a first inductance by the first air gap. The second secondary winding is wound on the first leg and the third leg, and induces a second inductance by the second air gap.
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Citations
13 Claims
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1. A DC transformer comprising:
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a magnetic core comprising a first leg, a second leg having a first air gap, and a third leg having a second air gap; a primary winding wound around the magnetic core; a first secondary winding wound around the first leg and the second leg for generating a first inductance by the first air gap of the magnetic core; and a second secondary winding wound around the first leg and the third leg for generating a second inductance by the second air gap of the magnetic core, wherein the number of windings of the first secondary winding wound around the first leg is more than the number of windings of the first secondary winding wound around the second leg, and the number of windings of the second secondary winding wound around the first leg is more than the number of windings of the second secondary winding wound around the third leg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A DC transformer comprising:
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a magnetic core comprising a first leg, a second leg having a first air gap, and a third leg having a second air gap; a primary winding wound around the magnetic core to receive an input voltage; a first secondary winding wound around the first leg, and around the second leg for generating a first inductance by the first air gap of the magnetic core to output a first part of an output voltage; and a second secondary winding wound around the first leg, and around the third leg for generating a second inductance by the second air gap of the magnetic core to output a second part of the output voltage. - View Dependent Claims (11, 12, 13)
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Specification