A high efficiency and wide bandwidth class D switching audio power amplifier with improved output stage and current mode control

被引：5

作者：

Jeong, JH

Cho, GH

机构：

[1] KOREA ADV INST SCI & TECHNOL,DEPT ELECT ENGN,TAEJON 305701,SOUTH KOREA

[2] SEOUL TELECOMM O&M RES CTR,TELECOMM POWER TEAM,SEOUL 137792,SOUTH KOREA

来源：

INTERNATIONAL JOURNAL OF ELECTRONICS | 1997年 / 82卷 / 05期

关键词：

D O I：

10.1080/002072197135913

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The pulse width modulated class D power amplifier has the highest efficiency among the various class amplifiers. To obtain high efficiency and wide bandwidth at class D amplifier, there are two important points to be considered most carefully. They are the output driver and the feedback control scheme. Composite oscillation conditions of output driver are studied in detail and a new drive circuit is suggested in this paper. A detailed design procedure of the current mode control is also shown to improve the performances. The new-design class D amplifier provides wide full-power bandwidth and high efficiency with good stability.

引用

页码：533 / 554

页数：22

共 13 条

[1]

AMR S, 1994, IEEE T POWER ELECT, V8, P297

[2]

ATTWOOD BE, 1983, J AUDIO ENG SOC, V31, P842

[3]

Attwood Brian E., 1979, US Patent, Patent No. 4178556

[4] MODULATED PULSE AUDIO POWER AMPLIFIERS FOR INTEGRATED CIRCUITS [J].

CAMENZIND, HR .

IEEE TRANSACTIONS ON AUDIO AND ELECTROACOUSTICS, 1966, AU14 (03) :136-+

[5]

FUNDA S, 1984, J AUDIO ENG SOC, V32, P755

[6]

HANCOCK J, 1991, J AUDIO ENG SOC, V39, P650

[7]

HSU S, 1979, IEEE POW EL SPEC C P

[8]

JENSEN JA, 1987, J AUDIO ENG SOC, V35, P984

[9] CLASS-D VOLTAGE-SWITCHING MOSFET POWER-AMPLIFIER [J].

KAZIMIERCZUK, MK .

IEE PROCEEDINGS-B ELECTRIC POWER APPLICATIONS, 1991, 138 (06) :285-296

[10]

MIDDLEBROOK RD, 1985, IEEE POW EL SPEC C P

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