| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor-driven load driver which suitably prevents a booster from becoming excessively high temperature while inhibiting sudden limitation on the operation of a motor-driven load and excessive limitation on an electric current applied to the booster.SOLUTION: A motor-driven load driver includes a booster current upper limit value deciding means 41 for deciding a booster current upper limit value for controlling the temperature of a booster 12 to a temperature equal to or less than the upper limit temperature according to a detection value of temperature of a coolant for cooling the booster 12 and a target value of output voltage of the booster 12. The booster current upper limit value is decided to be smaller, the higher the temperature of the coolant is, or the higher the output voltage of the booster is. The actual energization current of the booster 12 is controlled to be equal to or less than the booster current upper limit value. |
