发明名称 |
Motor driver and motor drive method |
摘要 |
A motor driver having output circuits each including upper and lower side switching elements connected in series. The motor driver includes: a current detection resistance connected in series with the output circuits in common; a phase switch circuit for turning ON a switching element on one side of one of the output circuits for a time period corresponding to a predetermined electrical angle and switching switching elements on the other side of a plurality of output circuits among the remaining ones of the output circuits; and an ON-period control section for generating a signal for controlling the switching operation so that each of periods obtained by dividing the time period includes a first period in which a plurality of switching elements are turned ON and a second period in which one of the switching elements turned ON in the first period is kept ON.
|
申请公布号 |
US2002195981(A1) |
申请公布日期 |
2002.12.26 |
申请号 |
US20020175059 |
申请日期 |
2002.06.20 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SAKAI HIROFUMI;YOKOUCHI TOMOHARU;YAMAMOTO YASUNORI;INAO MASASHI;IWANAGA TAISHI |
分类号 |
H02P6/00;H02P6/08;H02P6/10;(IPC1-7):H02P7/50 |
主分类号 |
H02P6/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|