| 摘要 |
A lamp driving apparatus includes a switch module, a controller, a resonant module, and a level shift circuit. The switch module includes a high side transistor switch and a low side transistor switch connected in series between an input power source and a common level. The controller controls the high side and the low side transistor switches to control the power from the input power source transmitted through the switch module. The resonant module coupled to the switch module converts the power into an AC output signal to drive a lamp. The level shift circuit generates a high side control signal based on an voltage level of a connecting node of the high side and the low side transistor switches, the level shift voltage, and a control signal generated by the controller so as to control the high transistor switch.
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