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參數(shù)資料
| 型號(hào)： | BUH515 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | High Voltage Fast-Switching NPN Power Transistor(高電壓快速開關(guān)NPN功率晶體管) |
| 中文描述： | 高壓快速NPN電源開關(guān)晶體管（高電壓快速開關(guān)npn型功率晶體管） |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 98K |
| 代理商： | BUH515 |
PowerLosses at 32 KHz
Switching Time InductiveLoad at 32 KHz
(see figure 2)
In order to saturate the power switch and reduce
conduction losses, adequate direct base current
I
B1
has to be provided for the lowest gain h
FE
at
100
negative base current I
B2
must be provided to
turn off the power transistor (retrace phase).
Most
of
the
dissipation,
application, occurs at switch-off. Therefore it is
essential to determine the value of I
B2
which
minimizes
power
losses,
consequently,T
j
. A new set of curves have been
defined to give total power losses, t
s
and t
f
as a
function of I
B2
at both 16 KHz and 32 KHz
scanning frequencies for choosing the optimum
negative drive. The test circuit is illustrated in
o
C (line scan phase). On the other hand,
in
the
deflection
fall
time
t
f
and,
figure 1.
Inductance L
1
serves to control the slope of the
negative base current I
B2
to recombine the
excess carrier in the collector when base current
is still present, this would avoid any tailing
phenomenonin thecollector current.
The values of L and C are calculated from the
following equations:
1
2L
(
I
C
)
2
=
1
Where I
C
= operating collector current, V
CEfly
=
flyback voltage, f= frequency of oscillation during
retrace.
2C
(
V
CEfly
)
2
ω =
2
π
f
=
1
√
L
C
BASE DRIVE INFORMATION
ReverseBiased SOA
Switching Time Resistive Load
BUH515
4/7
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| BUH517 | CRT HORIZONTAL DEFLECTION HIGH VOLTAGE NPN FASTSWITCHING TRANSISTOR |
| BUH615D | High Voltage Fast-Switching NPN Power Transistor(高電壓快速開關(guān)NPN功率晶體管) |
| BUH715 | HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BUH515D | 制造商:STMicroelectronics 功能描述:TRANSISTOR NPN ISOWATT-218 |
| BUH515FP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRANSISTOR | BJT | NPN | 700V V(BR)CEO | 8A I(C) | TO-220FP |
| BUH517 | 制造商:STMicroelectronics 功能描述:TRANSISTOR NPN ISOWATT-218 |
| BUH517 | 制造商:STMicroelectronics 功能描述:TRANSISTOR NPN ISOWATT-218 |
| BUH517D | 制造商:STMicroelectronics 功能描述:1700V 8A 60W Bce St Micro Transistor NPN |
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