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參數(shù)資料
| 型號(hào)： | SMH4804 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | -48V Programmable Hot Swap Sequencing Power Controller |
| 中文描述： | - 48V的可編程序熱插拔電源控制器 |
| 文件頁數(shù)： | 24/41頁 |
| 文件大?。?/td> | 574K |
| 代理商： | SMH4804 |
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Timing Diagram
SMH4804
24
2050 3.7 10/30/02
Summit Microelectronics
Figure 16. Over-temperature Shutdown
Notes:
n
o
p
The 10
resistor (R
G
) must be located as close as possible to the MOSFET.
Optional bypass capacitor. If a larger value is required an 11V Zener must be connected in parallel.
Optional interface circuit. The PG[4:1]
#
outputs can be directly connected to the power module if the input voltage to the
module is within tolerance and the voltage on the PG[4:1]# outputs doesn't exceed 15V.
The DRAIN Sense function may cause nuisance tripping due to voltage transients on the –48V line or when using multiple
lines. This may be avoided by one of the following methods:
A. Disable the function by connecting the DRAIN Sense pin to V
SS
directly. The components RT and DD are eliminated.
B. Add a capacitor from Drain Sense to V
SS
. The exact capacitance value depends upon the magnitude and duration of
the voltage transient appearing at the drain of the MOSFET.
q
100k
MMBTA06LT1
R
T
68k
MMBD-
1401
100k
MMBTA06LT1
100nF
50V
UV
OV
PD1#
PD2#
FAULT#
RESET#
V
E
E
PG3#
PG2#
5VREF
SMH4804
PG1#
V
C
V
D
–48V
R1
100μF
100V
R3
MODE
A0
A1
A2
SCL
SDA
1M
R2
RS
20m
–48V
100k
MMBTA06LT1
2
EN/TS
+
–
LMV331
1k
50k
NTC
50k
@TMAX
100nF
50V
2050 Fig17
E
F
100k
MMBTA06LT1
PG4#
R4
1k
R
G
10
C2
10nF
100V
C1
100nF
3.3nF
50V
2
1
3
4
RD
6.8k
W
100k
D
100nF
48V RTN (0V)
48V RTN (0V)
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