| 摘要 |
In an apparatus for driving a motor including first and second terminals, a back-gate-floating MOSFET has a drain connected to the first terminal. A bridge circuit is connected between the source of the back-gate-floating MOSFET and the second terminal, and supplies a load current to the motor. A step-up circuit is connected to the first terminal and the gate of the back-gate-floating MOSFET, and controls the back-gate-floating MOSFET in accordance with a voltage at the first terminal.
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