发明名称 |
LOWER LIMIT VALUE SETTING CIRCUIT, VARIABLE DELAY CIRCUIT EMPLOYING THE SAME, SWITCH DRIVING CIRCUIT, SWITCHING POWER SUPPLY DEVICE AND MOTOR DRIVE DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To prevent an extremely short simultaneous OFF time from being set.SOLUTION: A lower limit value setting circuit 11 comprises: a determination uni 11a which determines whether a setting value of a first delay amount setting signal DSET1 to be inputted is greater than a predetermined lower limit value and generates a determination signal Sdet; a storage unit 11b for storing a second delay amount setting signal DSET2 of which the setting value is fixed to the lower limit value; and a signal selection unit 11c which outputs one of the first delay amount setting signal DSET1 and the second delay amount setting signal DSET2 to a delay part 12 as a final delay amount setting signal DSET in accordance with the determination signal Sdet.SELECTED DRAWING: Figure 1 |
申请公布号 |
JP2016144188(A) |
申请公布日期 |
2016.08.08 |
申请号 |
JP20150021363 |
申请日期 |
2015.02.05 |
申请人 |
ROHM CO LTD;TDK CORP |
发明人 |
HOSHINO KIYOAKI;OKI KOICHI;KONDO SEIICHIRO;KOKUSHO YUICHI;SAKAMOTO TAKUYA |
分类号 |
H03K5/131;H02M7/48;H03K17/16 |
主分类号 |
H03K5/131 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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