STK433-030-E Просмотр технического описания (PDF) - SANYO -> Panasonic
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STK433-030-E Datasheet PDF : 11 Pages
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STK433-070-E
Evaluation Board Characteristics
100
7
5
VCC=±29V
3 VG=30dB
2 Rg=600Ω
10
7
Tc=25°C
5
3
RL=6Ω
2 2ch Drive
1.0
7
5
3
2
THD - PO
0.1
7
5
f=20kHz
3
2
0.01
7
5
3
2
0.001
0.1
2 3 5 7 1.0
1kHz
2 3 5 7 10
23
100
VG=30dB
Output power, PO/ch - W
PO - VCC
90 Rg=600Ω
80
RL=6Ω
Tc=25°C
70 f=1kHz
2ch Drive
60
5 7 100
ITF02678
50
40
30
THD=0.4%
20
10
0
10
15
20
25
30
35
40
Supply voltage, VCC - ±V
ITF02680
100
VCC=±29V
90 VG=30dB
f=1kHz
80 Rg=600Ω
70 Tc=25°C
RL=6Ω
60 2ch Drive
50
Pd - PO
40
30
20
10
0
0.1
100
23
5 7 1.0 2 3 5 7 10 2 3
Output power, PO/ch - W
PO - f
5 7 100
ITF02679
90
80
70
THD=10%
60
50
THD=0.4%
40
VCC=±29V
30
VG=30dB
20
Rg=600Ω
Tc=25°C
10
RL=6Ω
2ch Drive
0
10 2 3 5 7 100 2 3 5 7 1k 2 3 5 710k 2 3 5 7100k
Frequency, f - Hz
ITF02681
[Thermal Design Example for STK433-070-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. A1488-7/11
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