发明名称 Snubber circuit to increase efficiency of power converters
摘要 A system including a converter and a snubber circuit. The converter converts an alternating current voltage into a direct current voltage and outputs the direct current voltage across an inductance and a switch connected in series. The inductance has a center tap connected to a node, which is connected to a load. In response to the switch being turned on, a first current flows through the inductance and the switch. In response to the switch being turned off, a second current flows from the node to the load. The snubber circuit is connected across the node and a junction of the inductance and the switch. In response to the switch being turned off, the snubber circuit receives a third current from the junction, and supplies a first portion of the third current to the node. The second current and the first portion of the third current flow through the load.
申请公布号 US9397552(B2) 申请公布日期 2016.07.19
申请号 US201414271698 申请日期 2014.05.07
申请人 Marvell World Trade LTD. 发明人 Sutardja Sehat
分类号 H02M1/34 主分类号 H02M1/34
代理机构 代理人
主权项 1. A system comprising: a converter configured to convert an alternating current voltage into a direct current voltage, andoutput the direct current voltage across an inductance and a switch connected in series,wherein the inductance has a center tap connected to a node via a diode,wherein the node is connected to a load,wherein in response to the switch being turned on, a first current flows through the inductance and the switch, andwherein in response to the switch being turned off, a second current flows from the node to the load; and a snubber circuit connected across the node and a junction of the inductance and the switch, wherein the snubber circuit is configured to, in response to the switch being turned off, receive a third current from the junction, andsupply a first portion of the third current to the node, wherein a sum of the second current and the first portion of the third current flows through the load, wherein the snubber circuit includes a capacitance connected in parallel to a resistance, wherein a second portion of the third current charges the capacitance in response to the switch being turned off, and wherein the capacitance discharges through the resistance in response to the switch being subsequently turned on.
地址 St. Michael BB