| 摘要 |
PURPOSE: A power source converting device for a PWM high frequency ladder wave is provided to reduce the noise of the power source converting device and improve the efficiency of the device. CONSTITUTION: A power source converting device for a PWM high frequency ladder wave comprises a control power source and driving power source supplying section(100), an input filtering section(110), a DC-DC converter section(120), a ladder wave switching section(130), an LC filter section(140), an output circuit(150), a detecting section(160), a polarity converting circuit(170), a delaying circuit(180), a driving power source supplying circuit(190), a voltage controlling section(200), an over-current protecting circuit(210), and a ladder wave pulse generating section(220). The voltage controlling section(200) connects the output voltage to an ERR AMP input terminal of a PWM IC and stabilize the output voltage of the ladder wave.
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