24H1601-2R POWER ONE, 24H1601-2R Datasheet - Page 17

• Manufacturer Part Number: 24H1601-2R
• Description: CONV DC-DC 50W 24VDC CASSETTE
• Manufacturer: POWER ONE
• Series: Hr
• Type: Isolatedr

Specifications of 24H1601-2R

• Output: 24V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Surface Mount
• Voltage - Input: 14 ~ 30V
• Package / Case: Module
• 1st Output: 24 VDC @ 2A
• Size / Dimension: 6.63" L x 4.38" W x 1.52" H (168.5mm x 111.2mm x 38.7mm)
• Power (watts) - Rated: 50W
• Operating Temperature: -10°C ~ 50°C
• Efficiency: 83%
• Approvals: CE, cUL, TUV, UL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Other names: Q1166581

Table 19: Undervoltage monitor functions
1
2
REV. MAR 27, 2006
V ACFAIL signal (VME)
Available for units with 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 I
mA to V
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 t
output drops to 4.875 V when the 5.1 V output is fully
loaded. This hold-up time t
external input capacitance. Consequently the working input
voltage and the threshold level V
above the minimum input voltage V
that enough energy is remaining in this capacitance.
If the input voltage is below the required level, an external
hold-up capacitor (C
Table 18: Available internal input capacitance and factory
potentiometer setting of V
Option V operates independently of the built-in input
undervoltage lockout circuit. A logic "low" signal is
generated at pin 5 as soon as one of the monitored voltages
drops below the preselected threshold level V
for this signal is Vo1– (pin 23). The V output recovers when
V output (V2, V3):
Connector pin V is internally connected to the open
collector of an NPN transistor. The emitter is connected to
the negative potential of output 1. V
corresponds to a monitored voltage level ( V
V
exceed 50 mA. The NPN output is not protected against
external overvoltages. V
Threshold level adjustable by potentiometer (not recommended for mobile applications)
Fixed value between 95% and 98% of V
(VME compatible)
t
. The current I
Types
V
C
V
i
i min
t
V output
and V
h
t i
V
V
i
V
V2
V3
or V
-0.6 V (open-collector output of a NPN transistor).
i
, V
o1
o1
o1
> V
status
< V
t
V
0.19
12H
+ V
2.2
9.5
t
through the open collector should not
i ext
h
yes
yes
) should be added.
V
V
o1
h
Monitoring
i
should not exceed 80 V.
ti
of at least 4 ms before the 5.1 V
= 5.1 V.
with resulting hold-up time.
high, H, I
low, L, V
h
24H
0.75
19.5
0.87
should be provided by an
yes
V
no
t i
o1
i min
should be adequately
V
V
o1
V output, U
V
≤ 0.6 V at I
≤ 25 µA at V
(tracking), output undervoltage monitoring is not a requirement of VME standard
≤ 0.6 V (logic low)
of the converter so
0.19
0.89
48H
39
V
V
i
and/or V
i min
i min
t
. The return
V
Minimum adjustment range
V
to V
to V
= 50 mA
V
V
= 5.1 V
ti
of threshold level V
V
i max
i max
VDC
Unit
mF
ms
Page 17 of 19
= 48
o1
) <
1
1
Fig. 19
Output configuration of options V2 and V3
Formula for threshold level for desired value of t
V
Formula for additional external input capacitor
C
where as:
C
C
P
η
t
V
V
Remarks: The threshold level V
adjusted during manufacture to a value according to table
Undervoltage monitor functions , section Option D .
A decoupling diode should be connected in series with the
input to avoid the input capacitance discharging through
other loads connected to the same source voltage.
the monitored voltage(s) exceed(s) V
level V
a hole in the front cover.
Versions V2 and V3 are available as shown below.
h
0.95 to 0.98 V
o
i min
ti
i ext
i min
i ext
ti
=
50 Watt DC-DC Cassette Converters
= ––––––––––––––––––––– - C
= minimum internal capacitance [mF], according to
= external input capacitance [mF]
= output power [W]
= efficiency [%]
= hold-up time [ms]
= minimum input voltage [V]
= threshold level [V]
t
V
t
is adjustable by a potentiometer accessible through
–
2 • P
to
the table below
–––––––––––––––––––––– + V
2 • P
η • ( V
o
o1
• ( t
2
o
• ( t
h
ti
+ 0.3 ms) • 100
C
h
2
i min
+ 0.3 ms) • 100
– V
Typical hysteresis V
3.0 to 0.5
3.0 to 0.5
• η
i min
V
H Series Data Sheet
2
hi
)
for V
ti
t min
of option V2 and V3 is
11009
t
www.power-one.com
+ V
to V
i min
Vo1+
V
Vo1–
i min
h
t max
h
. The threshold
[% of V
2
I
V
V
V
"0"
V
–
h
ho
:
R
t
]
p