Application Number: 00120748
Application Date: 2000.07.07
Publication Number: 1280418
Publication Date: 2001.01.17
Priority Information: 1999/7/9 KR 27754/1999
International: H02M5/458;H02P7/63;H03K3/00
Applicant(s) Name: LG Industrial System Co., Ltd.
Address:
Inventor(s) Name: Pae Gyo-Song
Patent Agency Code: 11219
Patent Agent: yu mang
Abstract The present invention relates to a pulse width modulation control system, comprises a counter which sets initial voltage value differently and outputs chopping wave crossed at its maximum voltage value and minimum voltage value, an adder/subtracter which adds/subtracts signal generated by the counter, a reference voltage value generation unit which is inputted signal outputted from the adder/subtracter and outputs two different reference voltage values to single chopping wave, a comparator which compares reference voltage value generated by the reference voltage value generation unit with voltage value outputted from the adder/subtracter, and an output control unit which outputs PWM (Pulse Width Modulation) positive signal (SPWM+).