參數(shù)資料
型號: LMZ1601-7R
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 1-OUTPUT 50 W AC-DC REG PWR SUPPLY MODULE
文件頁數(shù): 15/26頁
文件大小: 771K
代理商: LMZ1601-7R
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
BCD20018 Rev AB
Page 22 of 26
www.power-one.com
Fig. 23
Relationship between Vi, Vo1, VD, ID, and Vo1/Vo nom
versus time.
1 See Electrical Output Data for hold-up time.
2 With output voltage monitoring the hold-up time th = 0
3 The D signal remains high, if the D output is connected
to an external source.
4 t low min = 40 – 200 ms, typically 80 ms
0
1
0.95
0
V
i [V DC]
0
t
low min
4
t
low min
4
t
high min
t
h
1
V
ti + Vhi
V
ti
Input voltage failure
Switch-on cycle
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
V
D high
V
D low
V
D
0
JFET
NPN
t
V
o1
V
o1 nom
V
D high
V
D low
V
D
t
low min
4
t
h
1
0
V
D high
V
D low
V
D
0
JFET
NPN
V
o1
V
D high
V
D low
V
D
t
low min
4
V
to
3
Output voltage failure
0
I
D high
I
D low
I
D
t
0
I
D high
I
D low
I
D
t
3
2
33
V
o1 nom
V
to +Vho
Input voltage monitoring
Output voltage monitoring
11008a
V ACFAIL Signal (VME)
Available for converters with Vo1 = 5.1 V. This option defines an
undervoltage monitoring circuit for the input or the input and
main output voltage equivalent to option D and generates the
ACFAIL signal (V signal), which conforms to the VME
standard. The low state level of the ACFAIL signal is specified
at a sink current of IV = 48 mA to VV – 0.6 V (open-collector
output). The pull-up resistor feeding the open-collector output
should be placed on the VME backplane.
After the ACFAIL signal has gone low, the VME standard
requires a hold-up time th of at least 4 ms before the 5.1 V
output drops to 4.875 V, when the 5.1 V output is fully loaded.
This hold-up time t h is provided by the internal input
capacitance. Consequently the working input voltage and the
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