BP 2101-7RG POWER ONE, BP 2101-7RG Datasheet - Page 12

• Manufacturer Part Number: BP 2101-7RG
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of BP 2101-7RG

• Input Voltage: 24V
• Screening Level: Commercial
• Operating Temperature Min Deg. C: -25C
• Operating Temperature Max Deg. C: 71C
• Product Length (mm): 164mm
• Product Depth (mm): 111mm
• Product Height (mm): 19.8mm
• Mounting Style: Din-Rail
• Pin Count: 15
• Number Of Outputs: 2
• Lead Free Status / RoHS Status: Compliant

–
Fig. 11
Redundant configuration
connected after the ORing diodes to maintain the correct
output voltage.
For the 12 V outputs, no current-share feature (option T) is
available. As a result, 2 little diodes D
resistors R
Reasonable current sharing is provided by load lines of
equal length and section.
Hot Swap
Important: For applications using the hot swap capabilities,
dynamic output voltage changes during plug-in and plug-out
operations may occur.
Hold-up time
The converters provide virtually no hold-up time. If a hold-up
time is required, use external output capacitors or input
capacitors of adequate size and decoupling diodes.
Formula for additional external input capacitor:
BCD20010-G Rev AC, 26-Aug-09
+
whereas:
+
C
R
i ext
p
i
s
= ––––––––––––––––––
) simulate the voltage drop of the ORing diodes.
26
26
2 • P
(V
Double-output
Double-output
Out OK+
Out OK–
Vi+
Vi–
Out OK+
Out OK–
Vi+
Vi–
i
i
ti
2
model
model
– V
o
• t
®
i min
h
• 100
2
) • η
Vo2–
Vo2+
Vo1+
Vo1–
Vo1+
Vo1–
06157b
Vo2–
Vo2+
S2+
S1–
S2–
S1+
S2–
S1+
S2+
S1–
T1
T1
Wires of equal length and sectinon
s
R
D
S
S
(loaded by little
R
D
S
S
Page 12 of 25
the second control loop may slightly reduce the voltage of the
main output. Thus, unused tracking outputs should be
connected in parallel to the respective main output.
The dynamic load regulation is shown in fig. 12.
Tracking Outputs
The main outputs 1 and 2 are regulated to V
of the output current. If the loads on outputs 3 and 4 are too
low (<10% of I
V
loaded with at least 10% of I
± 5% of V
the tracking outputs under different load conditions up to the
current limit. If I
are connected in series with their respective regulated
outputs, then V
that the load is at least I
tracking outputs against overvoltage by reducing the voltage
of the respective regulated main output.
Because the P Series uses main transformers and main
chokes in planar technology, the tracking outputs follow the
main outputs very closely. Fig. 13 shows the voltage of the
tracking output depending on its own output current and the
output current of the respective regulated output.
Note: If the tracking output (V
connected in parallel to the respective main output (V
V
o4
o2
, V
depend upon the load distribution: If all outputs are
o4
parallel to V
o nom
0.5
I
V
o
/I
90 – 194 Watt DC-DC Converters
1
0
o
o nom
. The following diagrams show the regulation of
o nom
o3
≥ 10 µs
Fig. 12
Typical dynamic load regulation of
output voltage
C
P
η
t
V
V
Output Voltage Regulation
Line and load regulation of the regulated
outputs is so good that input voltage and
output current have virtually no influence to
the output voltage.
However, if the tracking output is not loaded,
V
o1
h
od
o
and V
i min
i ext
ti
), their output voltage tends to rise. V
= I
o1
[mF]
).
[V]
o4
o4
and I
o min
remain within ±1% of V
t
d
o3
. A 2
o nom
o2
or V
P Series Data Sheet
= I
= external input capacitance
= output power [W]
= efficiency [%]
= hold-up time [ms]
= minimum input voltage
= threshold level [V]
, V
nd
V
o4
o3
V
od
o
control loop protects the
o3
is not loaded, it should be
or if the tracking outputs
±1%
and V
www.power-one.com
≥ 10 µs
o nom
o4
t
d
remain within
o nom
independent
o3
parallel to
05102c
provided
V
o3
o
±1%
and
t
t