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Invention Application
US20120146600A1 POWER CIRCUIT AND CIRCUIT BOARD, ELECTRICAL DEVICE USING THE SAME 有权
电源电路和电路板，使用该电路的电气设备

POWER CIRCUIT AND CIRCUIT BOARD, ELECTRICAL DEVICE USING THE SAME
Abstract:
A power circuit includes a control unit, a logic control circuit, a first driver amplifier, a second driver amplifier and a logic determination circuit. The control unit is used to output a pulse width modulation (PWM) signal and an enable (EN) signal. The logic control circuit receives the PWM signal and the EN signal, and outputs a first voltage signal and a second voltage signal. The first driver amplifier receives the first voltage signal, and outputs a first gate (UGATE) drive signal. The second driver amplifier receives the second voltage signal, and outputs a second gate (LGATE) drive signal. The logic determination circuit receives the PWM signal and the first and second gate drive signals. When the PWM signal and the first and second gate drive signals meet an abnormal logical relation, the logic determination circuit disables the logic control circuit.
Abstract(Chinese):

电源电路包括控制单元，逻辑控制电路，第一驱动器放大器，第二驱动器放大器和逻辑判定电路。 控制单元用于输出脉宽调制（PWM）信号和使能（EN）信号。 逻辑控制电路接收PWM信号和EN信号，并输出第一电压信号和第二电压信号。 第一驱动放大器接收第一电压信号，并输出第一门（UGATE）驱动信号。 第二驱动器放大器接收第二电压信号，并输出第二栅极（LGATE）驱动信号。 逻辑判定电路接收PWM信号和第一和第二栅极驱动信号。 当PWM信号和第一和第二栅极驱动信号满足异常逻辑关系时，逻辑判定电路禁止逻辑控制电路。

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