Invention Grant
- Patent Title: Pulse width modulation circuit
- Patent Title (中): 脉宽调制电路
-
Application No.: US10368695Application Date: 2003-02-19
-
Publication No.: US06765449B2Publication Date: 2004-07-20
- Inventor: Kazutaka Murayama , Sadatoshi Hisamoto , Norio Umezu , Yoshitaka Handa , Shuichi Hiza
- Applicant: Kazutaka Murayama , Sadatoshi Hisamoto , Norio Umezu , Yoshitaka Handa , Shuichi Hiza
- Priority: JP2002-45594 20020222
- Main IPC: H03K708
- IPC: H03K708

Abstract:
A pulse width modulation circuit of the present invention includes: pulse generation means being provided with a first power supply and charged with a first current and a second current between which a constant current is distributed to turn ON/OFF a switching element, thereby generating a pulse from a first output section; pulse modulation means for controlling the charging while controlling a distribution ratio between the first current and the second current based on an input signal, thereby changing a pulse width of the output pulse; and first short circuit means for shorting the first output section with the first power supply when the pulse being output from the first output section transitions to a voltage of the first power supply.
Public/Granted literature
- US20030160661A1 Pulse width modulation circuit Public/Granted day:2003-08-28
Information query