參數(shù)資料
型號： SMH4814NR00
廠商： Summit Microelectronics, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Dual Feed Active-ORing Programmable Hot Swap Controller
中文描述： 雙飼料有源ORing提供可編程熱插拔控制器
文件頁數(shù)： 5/44頁
文件大?。?/td> 935K
代理商： SMH4814NR00
SMH4814
PIN DESCRIPTION (CONTINUED)
Preliminary Information
Summit Microelectronics, Inc
2080 2.0 07/21/05
5
Pin No.
QFN
Pin Type
Name
Description
18
I
FEED
A
Connect to the -48V 'A' feed using a series 100k resistor. The voltage on
this pin is compared with the voltage on the FEED
B
pin internally by the
supply arbitration logic to determine which voltage will be used.
The DRAIN SENSE input monitors the voltage at the drain of the external
power MOSFET switch with respect to VSS. An internal 10μA source pulls
the DRAIN SENSE signal towards the 5V_CAP level. DRAIN SENSE must
be held below 2.5V to enable the PUP
X
outputs.
External capacitor input used to filter the device’s internal operating supply.
Also a hold Capacitor to sequence down and to filter any power glitches.
The VGATE_HS output activates an external power MOSFET switch. This
signal controls inrush current by modulating the gate of the Hot Swap
MOSFET device. It supplies a programmable current output which allows
easy adjustment of the MOSFET turn-on slew rate.
This pin controls the gate of the active FET on FEED
B
.
This pin controls the gate of the active FET on FEED
A
This is the positive supply input. An internal shunt regulator limits the
voltage on this pin to approximately 12V with respect to V
SS
. A resistor
must be placed in series with the V12 pin to limit the regulator current (R
D
in
the application schematics).
Active-high, logic level input that can be used to indicate when the converter
controlled by PUP
D
is fully powered.
A hold-off timer allows the secondary
side (which is not powered up initially) to control shut down via an opto-
isolator. See Figures 5 and 6.
Active-high, logic level input that can be used to indicate when the converter
controlled by PUP
C
is fully powered.
A hold-off timer allows the secondary
side (which is not powered up initially) to control shut down via an opto-
isolator. See Figures 5 and 6.
Active-high, logic level input that can be used to indicate when the converter
controlled by PUP
B
is fully powered.
A hold-off timer allows the secondary
side (which is not powered up initially) to control shut down via an opto-
isolator. See Figures 5 and 6.
Active-high, logic level input that can be used to indicate when the converter
controlled by PUP
A
is fully powered.
A hold-off timer allows the secondary
side (which is not powered up initially) to control shut down via an opto-
isolator. See Figures 5 and 6.
19
I
DRAIN
SENSE
20
O
5V_CAP
21
O
VGATE_HS
22
O
VGATE
B
VGATE
A
V12
23
O
24
PWR
25
I
FB
D
26
I
FB
C
27
I
FB
B
28
I
FB
A
相關(guān)PDF資料
PDF描述
SMH4814NR01 Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR02 Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR03 Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR04 Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR05 Dual Feed Active-ORing Programmable Hot Swap Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SMH4814NR01 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR02 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR03 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR04 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Dual Feed Active-ORing Programmable Hot Swap Controller
SMH4814NR05 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:Dual Feed Active-ORing Programmable Hot Swap Controller
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