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DIGITAL PULSE-FREQUENCY MODULATION CONTROLLER FOR SWITCH-MODE POWER SUPPLIES WITH FREQUENCY TARGETING AND ULTRASONIC MODES
DIGITAL PULSE-FREQUENCY MODULATION CONTROLLER FOR SWITCH-MODE POWER SUPPLIES WITH FREQUENCY TARGETING AND ULTRASONIC MODES
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机译:具有频率目标和超声模式的开关模式电源的数字脉冲频率调制控制器
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摘要
A digital pulse controller uses digital logic to send pulses to a high side and low side switches of a switch-mode power supply converter. The digital logic uses a pulse frequency mode which includes a frequency targeting mode and an ultrasonic mode. The frequency targeting mode dynamically adjusts the size of the pulses in order to achieve a switching frequency within a desired band. The ultrasonic mode is switched into when the frequency of the pulses are at or below a threshold and the time of the pulses reaches a minimum threshold.
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