TPA005D02
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS227C – AUGUST 1998 – REVISED MARCH 2000
APPLICATION INFORMATION
the ideal class D amplifier (continued)
Control logic is used to adjust the output power, and both transistors are never on at the same time. If the output
voltage is rising, M1 is on for a longer period of time than M2.
Inductor Current
Output Current
Supply Current
0
M1 on M1 off M1 on
M2 off M2 on M2 off
Time
Figure 14. Class D Currents
V
DD
V
A
V
OUT
0
M1 on M1 off M1 on
M2 off M2 on M2 off
Time
Figure 15. Class D Voltages
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265