STK433-090-E Ver la hoja de datos (PDF) - SANYO -> Panasonic
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STK433-090-E Datasheet PDF : 11 Pages
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STK433-090-E
Evaluation Board Characteristics
100
7
5
VCC=±33V
3 VG=30dB
2
10
7
RL=6Ω
2ch Drive
5
3
Rg=600Ω
2 Tc=25°C
THD - PO
1.0
7
5
3
2
0.1
7
5
3
2
0.01
7
5
3
2
0.001
0.1
2 3 5 7 1.0
f=20kHz
f=1kHz
2 3 5 7 10
23
120
f=1kHz
Output power, PO/ch - W
PO - VCC
RL=6Ω
100 2ch Drive
VG=30dB
Rg=600Ω
80
5 7 100
ITF02640
60
120
VCC=±33V
VG=30dB
Pd - PO
100 f=1kHz
Rg=600Ω
Tc=25°C
80 RL=6Ω
2ch Drive
(same output rating)
60
40
20
0
0.1 2 3 5 7 1.0 2 3 5 7 10 2 3 5 7 100 2 3 5 71000
Output power, PO/ch - W
ITF02641
PO - f
120
100
THD=10%
80
THD=0.4%
60
40
20
0
10
20
30
40
50
Supply voltage, VCC - ±V
ITF02642
40
VCC=±33V
VG=30dB
Rg=600Ω
20
Tc=25°C
RL=6Ω
0
2ch Drive
10 2 3 5 7 100 2 3 5 7 1k 2 3 5 710k 2 3 5 7100k
Frequency, f - Hz
ITF02643
[Thermal Design Example for STK433-090-E (RL = 6Ω)]
The thermal resistance, θc-a, of the heat sink for total power dissipation, Pd, within the hybrid IC is determined as
follows.
Condition 1: The hybrid IC substrate temperature, Tc, must not exceed 125°C.
Pd × θc-a + Ta < 125°C ................................................................................................. (1)
Ta: Guaranteed ambient temperature for the end product
Condition 2: The junction temperature, Tj, of each power transistor must not exceed 150°C.
Pd × θc-a + Pd/N × θj-c + Ta < 150°C .......................................................................... (2)
N: Number of power transistors
θj-c: Thermal resistance per power transistor
However, the power dissipation, Pd, for the power transistors shall be allocated equally among the number of power
transistors.
The following inequalities result from solving equations (1) and (2) for θc-a.
θc-a < (125 − Ta)/Pd ...................................................................................................... (1)'
θc-a < (150 − Ta)/Pd − θj-c/N ........................................................................................ (2)'
Values that satisfy these two inequalities at the same time represent the required heat sink thermal resistance.
When the following specifications have been stipulated, the required heat sink thermal resistance can be determined
from formulas (1)' and (2)'.
• Supply voltage
• Load resistance
• Guaranteed ambient temperature
VCC
RL
Ta
No. A1248-7/11
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