| 摘要 |
<p>PURPOSE: A feedback circuit and a power supply device including the same are provided to prevent an output voltage overshoot by generating a feedback voltage without a delay of an output voltage. CONSTITUTION: A power supply device(1) includes a bridge rectifying diode(10), a power switch(M), a switching circuit(100), a feedback circuit(200), a transformer(20), a rectifying diode(D1), and an output capacitor(C2). The bridge rectifying diode generates an input voltage by rectifying AC input. The transformer transforms first side power into second side power to deliver the same. A switching control unit controls an switching operation of a power switch. A feedback circuit generates an output voltage and a feedback voltage corresponding to an output current. [Reference numerals] (100) Switch control unit; (2) Load; (210) Voltage feedback unit; (220) Current feedback unit</p> |
