Integrated Class-D Amplifier With Active Current Sensing Suitable for Alternating Current Switches

2008 ◽  
Vol 55 (8) ◽  
pp. 3141-3149 ◽  
Author(s):  
Jiann-Jong Chen ◽  
Ho-Cheng Lin ◽  
Che-Min Kung ◽  
Yuh-Shyan Hwang ◽  
Juing-Huei Su
Keyword(s):  
Alternating Current ◽  
Current Sensing ◽  
Class D Amplifier ◽  
Class D

Design of Class D Amplifiers Using Zero Crossing Auto Gain Control

2012 ◽  
Vol 198-199 ◽  
pp. 1157-1161
Author(s):  
Hai Shi Wang ◽  
Bo Zhang ◽  
Jiang Sun
Keyword(s):  
Input Signal ◽  
Output Signal ◽  
Gain Control ◽  
Digital Signal ◽  
Alternating Current ◽  
Road Test ◽  
Zero Crossing ◽  
Class D Amplifier ◽  
Large Gain ◽  
Class D

This paper proposes a method to control the gain of an amplifier. A 6-bit digital signal is used to control the gain of the amplifier by adjusting the resistance of a potentiometer. The change of the digital signal is allowed to change the gain of the amplifier only if the input signal of the amplifier crosses alternating current (AC) zero. The gain of the amplifier could be reduced or restored, which is based on whether the output signal of the amplifier exceeds a predetermined value or not. The method is verified in a class D amplifier. Road test shows that the method may eliminate the glitch caused by gain change, and the clamp caused by a too large gain.

SHEPWM Class-D Amplifier with a Reconfigurable Gate Driver Integrated Circuit

2021 ◽  
Author(s):  
Nueraimaiti Aimaier ◽  
Nam Ly ◽  
Gabriel Nobert ◽  
Yves Blaquiere ◽  
Nicolas Constantin ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Class D Amplifier ◽  
Class D ◽  
Gate Driver

scholarly journals Ripple Compensation for a Class-D Amplifier

2015 ◽  
Vol 75 (4) ◽  
pp. 1536-1552 ◽  
Author(s):  
Stephen M. Cox ◽  
H. du Toit Mouton
Keyword(s):  
Class D Amplifier ◽  
Class D
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