| 摘要 |
PURPOSE: A differential load driving circuit is provided, which allows to supply a linear current at a low current mode and a PWM(Pulse Width Modulation) current at a high current mode, thereby reducing a ripple current. CONSTITUTION: A differential load driving circuit includes a plurality of power switches(64,66), a plurality of power switch driving circuits(52,54,56,58), and at least one current source(60,62). The power switches are selectively connected to a load to supply current to the load. The power switch driving circuits operates to control a conduction state of the power switches and to selectively connect at least one of the plurality of the power switches to a PWM(Pulse Width Modulation) signal. The current source is connected to the load to supply a current to the load during a low current condition of the load, and the PWM signal is connected to the load to supply a current to the load during a high current condition of the load. |
