专利内容由知识产权出版社提供
专利名称：Power-supply device
发明人：Sase, Takashi, Hitachi, Ltd., Int. Prop.
Gp.,Tateno, Koji, Hitachi, Ltd., Int. Prop.Gp.,Kanouda, Akihiko, Hitachi, Ltd., Int. Prop.Gp.,Hayashi, Katsunori, Hitachi, Ltd., Int. Prop.Gp.,Yoshida, Shinichi, Hitachi, Ltd., Int. Prop.Gp.
申请号：EP03013376.3申请日：20030617公开号：EP1376295A1公开日：20040102
专利附图：
摘要：A step-down type DC-DC power-supply device implements both the
stabilization of the control loop and the responsibility at the same time. In the power-supply device, an output power signal is fed back to an error amplifier (EA) after havingpassed through a CR smoothing filter provided independently of a power LC smoothingfilter. Also, independently of the duty controls over Power MOSFETs (Q1, Q2), i.e., upper-side/lower-side semiconductor switching components in the steady state, an output(Vout) from the power LC smoothing filter is added to an upper and lower limit-mode-equipped control circuit, thereby, at the transient state, forcefully setting the duty α ateither 0% or 100%.
申请人：Hitachi, Ltd.
地址：6 Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 JP
国籍：JP
代理机构：Beetz & Partner Patentanwälte
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