| 摘要 |
PROBLEM TO BE SOLVED: To execute shutdown control corresponding to a priority order in simple configuration using existent semiconductor chip 4 for voltage adjustment and semiconductor chip 5 for amplifier. SOLUTION: When the semiconductor chip 4 for voltage adjustment is affected by heating in the semiconductor chip 5 for amplifier, a calorific value can be reduced by controlling the operating state of the semiconductor chip 5 for amplifier from a microcomputer 10 present outside a substrate 11 based on a caution signal S1 received from the semiconductor chip 4 for voltage adjustment, so that shutdown control corresponding to a priority order can be executed in simple configuration just connecting the existent semiconductor chip 4 for voltage adjustment and semiconductor chip 5 for amplifier to the external microcomputer 10. COPYRIGHT: (C)2006,JPO&NCIPI |
