发明授权
- 专利标题: Class D amplifier
- 专利标题(中): D类放大器
-
申请号: US10632248申请日: 2003-08-01
-
公开(公告)号: US06937091B2公开(公告)日: 2005-08-30
- 发明人: Yasuomi Tanaka , Masao Noro
- 申请人: Yasuomi Tanaka , Masao Noro
- 申请人地址: JP Hamamatsu
- 专利权人: Yamaha Corporation
- 当前专利权人: Yamaha Corporation
- 当前专利权人地址: JP Hamamatsu
- 代理机构: Pillsbury Winthrop Shaw Pittman LLP
- 优先权: JPP.2002-226628 20020802
- 主分类号: H03K17/687
- IPC分类号: H03K17/687 ; H03F3/217 ; H03F3/30 ; H03F3/38
摘要:
A complementary signal generating circuit (301) generates first complementary signals (S1, S2) from a PWM signal. A signal converting circuit (302) converts the first complementary signals to second complementary signals (S3, S4 or S5, S6) having a voltage component based on a negative power supply (VPP−). Among the second-complementary signals, the signals (S3, S4) are supplied to a driving circuit (305), and the signals (S5, S6) are supplied to a current driving circuit (303). In response to the signals (S5, S6), the current driving circuit outputs third complementary signals (H3, H4) having a current component that is directed toward the negative power supply (VPP−), to a driving circuit (304). As a result, the driving circuits (304, 305) complementarily drive power-MOS transistors (401, 402).
公开/授权文献
- US20040021512A1 Class D amplifier 公开/授权日:2004-02-05