Power supply circuit with spike suppression circuit
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorsQi-Yan Luo, Song-Lin Tong, Peng Chen
Life of this patent
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Abstract
A power supply circuit includes a pulse width modulation (PWM) chip, a number of phase circuits, a voltage output end, and a spike suppression circuit. The spike suppression circuit is connected to each of the phase circuits and the voltage output end. The PWM chip controls all of the phase circuits to alternately output power supply voltages according to a predetermined sequence. The spike suppression circuit receives the power supply voltages, and filters out voltage spikes in the power supply voltages, thereby outputting steady voltages to the voltage output end.
Claims7
A power supply circuit, comprising:
- a pulse width modulation (PWM) chip;
- a plurality of phase circuits connected to the PWM chip;
- a voltage output end;
- and
- a spike suppression circuit connected to each of the plurality of the phase circuits and the voltage output end;
- wherein the PWM chip controls all of the phase circuits to alternately output power supply voltages according to a predetermined sequence, the spike suppression circuit receives the power supply voltages, and suppresses voltage spikes in the power supply voltages, thereby outputting steady voltages to the voltage output end.
Dependencies are inferred from the claim text.