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參數(shù)資料
| 型號： | TK2150 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEREO 200W CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING TECHNOLOGY |
| 中文描述： | 類立體聲功率200W - T的數(shù)字音頻放大器驅(qū)動程序使用數(shù)字功率處理技術(shù) |
| 文件頁數(shù)： | 27/34頁 |
| 文件大小： | 663K |
| 代理商： | TK2150 |
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Tripath Technology, Inc. - Technical Information
27
TK2150 – Rev. 1.0/12.02
THD+N versus Frequency versus Gate Resistance
0.001
10
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
R
= 6
Pout = 25W /Channel
FET's = FQP13N10
f = 1kHz
BBM = 40nS
V
S
= +40V
BW = 22Hz - 22kHz
R
G
= 22
R
G
= 33
R
G
= 46.4
THD+N versus Frequency versus Gate Resistance
0.001
10
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
R
L
= 8
Pout = 20W /Channel
FET's = FQP13N10
f = 1kHz
BBM = 40nS
V
S
= +40V
BW = 22Hz - 22kHz
R
G
= 22
R
G
= 33
R
G
= 46.4
6 ohm and 8 ohm plots of THD+N versus Frequency for various gate resistor values
6 ohms
18mA
20mA
80mA
8 ohms
18mA
20mA
80mA
22 ohms
33 ohms
46.4 ohms
Table 2: Idle current draw for VPP with various gate resistor values
Application Information – Recommended MOSFETs
Part Number Recommended Max
Supply Voltage
IRF520N
+/-45V
Typical Load at
Maximum Supply
8 ohm SE
Recommended
Gate Resistor
22 ohms
Other applications
Only for 8 ohm SE Loads
FQP13N10
+/-45V
6 ohm SE
33 ohms
6 ohm BR at +/25V
8 ohm BR at +/-33V
6 ohm BR at +/-25V
8 ohm BR at +/-33V
6 ohm BR at +/-33V
STP14NF10
+/-45V
6 ohm SE
33 ohms
IRF530N
+/-45V
4 ohm SE / 8 ohm BR
15 ohms
BUK7575-100A
STP24NF10
SE stands for Single Ended Outputs and BR stands for Bridged Output
MOSFETs Under Evaluation
The following MOSFETs appear to be suitable for use with the TK2150, and we are waiting for
samples to evaluate. Most of these devices come from the same “family” or generation, as other
recommended MOSFETs. However, experience tells us that we cannot recommend any devices
until we have received samples and fully tested them.
Device Information – MOSFETs Under Evaluation
Part Number
Manufacturer
BV
DSS
(V)
FQP14N15
Fairchild Semiconductor
150
+/-45V
4 ohm SE / 6 ohm BR
15 ohms
4 ohm BR at +/-33V
+/-45V
4 ohm SE / 6 ohm BR
10 ohms
4 ohm BR at +/-35V
I
D
(A)
14.4
Q
g
(nC)
18
R
DS(on)
(
)
.164
P
D
(W)
104
Package
T0220
FQP16N15
Fairchild Semiconductor
150
16.4
23
0.123
108
TO220
FDP2572
Fairchild Semiconductor
150
29
27
0.045
135
TO247
FDP3682
Fairchild Semiconductor
100
32
18.5
0.032
95
TO220
Note: The devices are listed in ascending current capability not in order of recommendation.
Output Filter Design
One advantage of Tripath amplifiers over PWM solutions is the ability to use higher-cutoff-
frequency filters. This means load-dependent peaking/droop in the 20kHz audio band potentially
caused by the filter can be made negligible. This is especially important for applications where
the user may select a 6-Ohm or 8-Ohm speaker. Furthermore, speakers are not purely resistive
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