DC to DC converter for decreasing switching loss according to the turn-on/turn-off state of a switch
First Claim
1. A direct current (DC) to DC converter comprising:
- a transformer which comprises a primary winding which is connected in series with an input voltage, and a secondary winding which generates an induced current when the input voltage is applied to the primary winding;
a switching part which is connected to the primary winding and performs a switching operation according to a control signal;
a first delay part which delays an increasing rate of voltage between open nodes according to a turned-off state of the switching part and supplies a discharge current when the switching part is turned-on;
a second delay part which delays a current flow in the switching part when the first delay part discharges the current when the switching part is turned-on; and
a switching control part which senses a voltage output from the primary winding and applies a turn-on control signal to the switching part if the voltage is a minimum voltage when the switching part is turned-off.
1 Assignment
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Accused Products
Abstract
A direct current (DC) to DC converter is provided. The DC to DC converter includes: a transformer which comprises a primary winding which is connected in series with an input voltage and a secondary winding which generates induced current when the input voltage is applied to the primary winding; a switching part which is connected to the primary winding and performs a switching operation according to a predetermined control signal; a first delay part which delays an increasing rate of voltage between open nodes according to a turned-off state of the switching part and supplies a discharge current when the switching part is turned-on; and a second delay part which delays current flow in the switching part when the first delay part discharges the current when the switching part is turned-on.
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Citations
11 Claims
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1. A direct current (DC) to DC converter comprising:
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a transformer which comprises a primary winding which is connected in series with an input voltage, and a secondary winding which generates an induced current when the input voltage is applied to the primary winding; a switching part which is connected to the primary winding and performs a switching operation according to a control signal; a first delay part which delays an increasing rate of voltage between open nodes according to a turned-off state of the switching part and supplies a discharge current when the switching part is turned-on; a second delay part which delays a current flow in the switching part when the first delay part discharges the current when the switching part is turned-on; and a switching control part which senses a voltage output from the primary winding and applies a turn-on control signal to the switching part if the voltage is a minimum voltage when the switching part is turned-off. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification