參數(shù)資料
型號(hào)： LMZ1601-7R
廠商： POWER-ONE INC
元件分類(lèi)： 電源模塊
英文描述： 1-OUTPUT 50 W AC-DC REG PWR SUPPLY MODULE
文件頁(yè)數(shù)： 16/26頁(yè)
文件大?。?/td> 771K
代理商： LMZ1601-7R
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
BCD20018 Rev AB
Page 23 of 26
www.power-one.com
V output (V0, V2, V3):
Connector pin V is internally connected to the open collector of
a NPN transistor. The emitter is connected to the negative
potential of output 1. VV - 0.6 V (logic low) corresponds to a
monitored voltage level (Vi and/or Vo1) < Ut. The current IV
through the open collector should not exceed 50 mA. The NPN
output is not protected against external overvoltages. VV
should not exceed 80 V.
exceeds Vt + Vh. The threshold level Vt is either adjustable by a
potentiometer, accessible through a hole in the front cover, or
adjusted in the factory to a determined customer-specific
value.
Versions V0, V2 and V3 are available as shown below.
Option V operates independently of the built-in input under-
voltage lockout circuit. A logic "low" signal is generated at pin 5
as soon as one of the monitored voltages drops below the pre-
selected threshold level Vt. The return for this signal is Vo1–
(pin 23). The V output recovers, when the monitored voltage
Table 22: Undervoltage monitor functions
V output
Monitoring
Minimum adjustment range
Typical hysteresis Uh [% of Vt]
(VME compatible)
of threshold level Vt
for Vt min – Vt max
V i
Vo1
Vti
V to
Vhi
V ho
V2
yes
no
Vi min – Vi max 1–
3.0 – 0.5
-
V3
yes
Vi min – Vi max 1
0.95 – 0.98 Vo1 2
3.0 – 0.5
"0"
V0
yes
no
Vi min – Vi max 3 4
-
2.2 – 0.4
-
yes
Vi min – Vi max 3 4
0.95 – 0.98 Vo1 2
2.2 – 0.4
"0"
1 Threshold level adjustable by potentiometer (not recommended for mobile applications).
2 Fixed value between 95% and 98% of Vo1 (tracking), output undervoltage monitoring is not a requirement of VME standard.
3 Adjusted at Io nom.
4 Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by Power-One.
Table 21: Available internal input capacitance and factory potentiometer setting of Ut i with resulting hold-up time
Types
AM
BM
CM
DM
EM
FM
LM
Unit
Ci min
2.6
0.67
0.37
0.14
0.37
0.14
mF
Vt i
9.5
19.5
39
61
104
39
120
VDC
t h
0.34
0.69
1.92
1.73
6.69
2.92
8.18
ms
Fig. 24
Output configuration of options V0, V2, V3
threshold level Vti should be adequately above the minimum
input voltage Vi min of the converter, so that enough energy is
remaining in the input capacitance. If the input voltage is below
the required level, an external hold-up capacitor (Ci ext) should
be added.
Formula for threshold level for desired value of t h:
2 Po (th + 0.3 ms) 100
Vti =
––––––––––––––––––––– + Vi min2
Ci min
η
Formula for additional external input capacitor
2 Po (th + 0.3 ms) 100
Ci ext = ––––––––––––––––––––– – Ci min
η (Vti 2 – Vi min2)
where as:
Ci min
= minimum internal input capacitance [mF], according
to the table below
Ci ext
= external input capacitance [mF]
Po
= output power [W]
η
= efficiency [%]
t h
= hold-up time [ms]
Vi min
= minimum input voltage [V]
Vti
= threshold level [V]
Notes: The threshold level Vti of option V2 and V3 is adjusted in
the factory to a value according to the table below. A decoupling
diode should be connected in series with the input of AM, BM, CM,
DM, and FM converters to avoid the input capacitance discharging
through other loads connected to the same source voltage. If LM
models are powered by AC, an external input capacitor cannot be
applied unless an additional rectifier is provided.
Vi, Vo1 status
V output, VV
Vi or Vo1 < Vt
low, L, VV - 0.6 V at IV = 50 mA
Vi and Vo1 > Vt + Vh
high, H, IV - 25 A at VV = 5.1 V
Vo1+
Vo1–
V
VV
IV
Rp
Input
11009a
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