25.11.2005, 04:56 PM
tda8939_ucd_002 THD
Per .tran options, skipping operating point for transient analysis.
Changing Tseed to 1e-010
Changing Tseed to 1e-012
Heightened Def Con from 6.39966e-008 to 6.79966e-008
Heightened Def Con from 0.0005 to 0.0005
Fourier components of V(output)
DC component:0.0325819
Harmonic Frequency Fourier Normalized Phase Normalized
Number [Hz] Component Component [degree] Phase [deg]
1 1.000e+04 1.701e+01 1.000e+00 -98.82° 0.00°
2 2.000e+04 6.110e-02 3.593e-03 28.51° 127.33°
3 3.000e+04 1.269e-01 7.460e-03 9.21° 108.03°
4 4.000e+04 2.339e-02 1.375e-03 -176.27° -77.46°
5 5.000e+04 1.633e-01 9.602e-03 -177.25° -78.43°
6 6.000e+04 6.946e-02 4.084e-03 -120.57° -21.75°
7 7.000e+04 8.482e-02 4.987e-03 2.85° 101.67°
8 8.000e+04 4.724e-02 2.778e-03 63.41° 162.22°
9 9.000e+04 8.798e-02 5.173e-03 90.36° 189.18°
10 1.000e+05 1.559e-01 9.165e-03 -91.06° 7.76°
Total Harmonic Distortion: 1.796320%
Date: Fri Nov 25 13:42:24 2005
Total elapsed time: 33.875 seconds.
tnom = 27
temp = 27
method = modified trap
totiter = 238039
traniter = 238039
tranpoints = 68687
accept = 51297
rejected = 17390
trancuriters = 0
matrix size = 161
fillins = 106
solver = Normal
tda8939_ucd_002 Efficiency report
--- Efficiency Report ---
Efficiency: 44.1% <- see comment below!
Input: 73.9W @ 2.5V
Output: 32.6W @ -1.59V
Ref. Irms Ipeak Dissipation
C1 0mA 0mA 0mW
C10 114mA 2936mA 0mW
C11 114mA 2935mA 0mW
C12 114mA 2936mA 0mW
C13 0mA 0mA 0mW
C14 0mA 1mA 0mW
C15 0mA 1mA 0mW
C2 0mA 0mA 0mW
C3 0mA 0mA 0mW
C4 0mA 0mA 0mW
C5 578mA 1370mA 0mW
C6 578mA 1374mA 0mW
C7 214mA 333mA 0mW
C8 213mA 332mA 0mW
C9 114mA 2935mA 0mW
L1 2216mA 3596mA 5mW
L2 2210mA 3594mA 5mW
R1 214mA 333mA 1004mW
R10 3mA 5mA 2mW
R11 0mA 0mA 0µW
R12 0mA 0mA 49µW
R13 213mA 332mA 1001mW
R16 0mA 1mA 0µW
R17 0mA 1mA 0µW
R2 229mA 5869mA 523mW
R3 229mA 5872mA 524mW
R4 2015mA 2935mA 32477mW
R8 3mA 4mA 48mW
R9 0mA 0mA 234µW
U1 2224mA 9034mA 5616mW
U3 25mA 25mA 141mW
U4 6mA 6mA -0mW
Comment: keep in mind that both channels are driven, hence efficiency is double the value listed as the power dissipated in the 2nd 8-ohm load is not included, hence efficiency is 88%
Sander.
Per .tran options, skipping operating point for transient analysis.
Changing Tseed to 1e-010
Changing Tseed to 1e-012
Heightened Def Con from 6.39966e-008 to 6.79966e-008
Heightened Def Con from 0.0005 to 0.0005
Fourier components of V(output)
DC component:0.0325819
Harmonic Frequency Fourier Normalized Phase Normalized
Number [Hz] Component Component [degree] Phase [deg]
1 1.000e+04 1.701e+01 1.000e+00 -98.82° 0.00°
2 2.000e+04 6.110e-02 3.593e-03 28.51° 127.33°
3 3.000e+04 1.269e-01 7.460e-03 9.21° 108.03°
4 4.000e+04 2.339e-02 1.375e-03 -176.27° -77.46°
5 5.000e+04 1.633e-01 9.602e-03 -177.25° -78.43°
6 6.000e+04 6.946e-02 4.084e-03 -120.57° -21.75°
7 7.000e+04 8.482e-02 4.987e-03 2.85° 101.67°
8 8.000e+04 4.724e-02 2.778e-03 63.41° 162.22°
9 9.000e+04 8.798e-02 5.173e-03 90.36° 189.18°
10 1.000e+05 1.559e-01 9.165e-03 -91.06° 7.76°
Total Harmonic Distortion: 1.796320%
Date: Fri Nov 25 13:42:24 2005
Total elapsed time: 33.875 seconds.
tnom = 27
temp = 27
method = modified trap
totiter = 238039
traniter = 238039
tranpoints = 68687
accept = 51297
rejected = 17390
trancuriters = 0
matrix size = 161
fillins = 106
solver = Normal
tda8939_ucd_002 Efficiency report
--- Efficiency Report ---
Efficiency: 44.1% <- see comment below!
Input: 73.9W @ 2.5V
Output: 32.6W @ -1.59V
Ref. Irms Ipeak Dissipation
C1 0mA 0mA 0mW
C10 114mA 2936mA 0mW
C11 114mA 2935mA 0mW
C12 114mA 2936mA 0mW
C13 0mA 0mA 0mW
C14 0mA 1mA 0mW
C15 0mA 1mA 0mW
C2 0mA 0mA 0mW
C3 0mA 0mA 0mW
C4 0mA 0mA 0mW
C5 578mA 1370mA 0mW
C6 578mA 1374mA 0mW
C7 214mA 333mA 0mW
C8 213mA 332mA 0mW
C9 114mA 2935mA 0mW
L1 2216mA 3596mA 5mW
L2 2210mA 3594mA 5mW
R1 214mA 333mA 1004mW
R10 3mA 5mA 2mW
R11 0mA 0mA 0µW
R12 0mA 0mA 49µW
R13 213mA 332mA 1001mW
R16 0mA 1mA 0µW
R17 0mA 1mA 0µW
R2 229mA 5869mA 523mW
R3 229mA 5872mA 524mW
R4 2015mA 2935mA 32477mW
R8 3mA 4mA 48mW
R9 0mA 0mA 234µW
U1 2224mA 9034mA 5616mW
U3 25mA 25mA 141mW
U4 6mA 6mA -0mW
Comment: keep in mind that both channels are driven, hence efficiency is double the value listed as the power dissipated in the 2nd 8-ohm load is not included, hence efficiency is 88%
Sander.