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    • 3. 发明授权
    • Processor with dual-deadtime pulse width modulation generator
    • 具有双死区脉宽调制发生器的处理器
    • US06937084B2
    • 2005-08-30
    • US09870626
    • 2001-06-01
    • Stephen A. Bowling
    • Stephen A. Bowling
    • H02M1/00H02M1/38H03K5/151H03K7/08H03K17/296
    • H02M1/38H03K5/1515H03K7/08
    • A processor that has pulse width modulation generation circuitry that provides an improved ability to deal with the less than perfect switching characteristics of external switching devices that are connected to PWM hardware included in a processor. Complementary PWM output signals have dual deadtime delay in which the delay between the inactivation of the first signal and the activation of the second signal may be different than the delay between the inactivation of the second signal and the activation of the first signal. This provides an improved capability to deal with non-symmetric switching characteristics of the external switching devices, and the circuitry to which they are connected. The dual deadtime pulse width modulation generator for a processor includes deadtime generation circuitry operable to generate a first pulse width modulated signal and a second pulse width modulated signal complementary to the first pulse width modulated signal, wherein there is a first delay between inactivation of the first pulse width modulated signal and activation of the second pulse width modulated signal, a second delay between inactivation of the second pulse width modulated signal and activation of the first pulse width modulated signal, and the first and second delays are not equal. The first delay and the second delay may be independently settable.
    • 具有脉冲宽度调制生成电路的处理器,其提供了处理连接到处理器中包括的PWM硬件的外部开关器件的不太完美的开关特性的改进能力。 互补PWM输出信号具有双死区时间延迟,其中第一信号的失活和第二信号的激活之间的延迟可能不同于第二信号的失活和第一信号的激活之间的延迟。 这提供了处理外部开关器件及其连接的电路的非对称开关特性的改进的能力。 用于处理器的双死区时间脉宽调制发生器包括死区产生电路,其可操作以产生与第一脉宽调制信号互补的第一脉宽调制信号和第二脉宽调制信号,其中在第一 脉冲宽度调制信号和第二脉冲宽度调制信号的激活,第二脉冲宽度调制信号的失活和第一脉冲宽度调制信号的激活之间的第二延迟以及第一和第二延迟不相等。 第一延迟和第二延迟可以是独立可设定的。
    • 4. 发明授权
    • Processor with pulse width modulation generator with fault input prioritization
    • US06552625B2
    • 2003-04-22
    • US09870650
    • 2001-06-01
    • Stephen A. Bowling
    • Stephen A. Bowling
    • H03K0708
    • H02P27/08G05B2219/34217
    • A processor that has pulse width modulation generation circuitry that provides an improved capability to deal with fault conditions, and particularly with multiple concurrent fault conditions, occurring in external circuitry and devices that are connected to PWM hardware included in a processor. A pulse width modulation generator for a processor includes fault priority circuitry having a plurality of fault inputs operable to receive fault input signals and a fault output operable to output a fault output signal, the fault priority circuitry operable to receive fault input signals on a plurality of fault inputs concurrently, and output a fault output signal corresponding to a fault input having a highest priority among the fault inputs that are receiving fault input signals, and pulse width modulation circuitry having at least one pulse width modulation output operable to output at least one pulse width modulated signal and a fault input operable to receive the fault output signal from the fault priority circuitry, the pulse width modulation circuitry operable to drive the pulse width modulation output to a defined state associated with the selected fault input.