Switching power supply

The invention discloses a switching power supply, wherein the switching power supply comprises a flyback output unit, a linear voltage-stabilizing unit, a pulse-width modulation (PWM) signal unit and a forward output unit; the linear voltage-stabilizing unit and the PWM signal unit are connected bet...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	PANG ZHONGHAO, XING HUI, SHI YINGLIANG, JIANG ZHENZHOU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION
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Beschreibung
Zusammenfassung:	The invention discloses a switching power supply, wherein the switching power supply comprises a flyback output unit, a linear voltage-stabilizing unit, a pulse-width modulation (PWM) signal unit and a forward output unit; the linear voltage-stabilizing unit and the PWM signal unit are connected between the flyback output unit and the forward output unit in series respectively, wherein the flyback output unit outputs a flyback voltage signal and a reverse phase PWM signal; the linear voltage-stabilizing unit stabilizes the voltage of the flyback voltage signal; the PWM signal unit is used for transforming the reverse phase PWM signal to a forward PWM signal; based on the stabilized flyback voltage signal and the normal phase PWM signal, the forward output unit outputs the forward voltage signal. Through flyback loop control, linear voltage stabilization and forward output, the switching power supply provided by the invention can combine the forward and flyback together, so that the influence of load adjusting