Datasheet

YR20.242
Y-Series
12-28V, 20A, DUAL REDUNDANCY MODULE
4. POWER LOSSES
DC 12V DC 24V
Power losses typ.
0.6W 0.6W input: 2x5A, ambient temperature: 25°C
typ.
2.0W 2.0W
input: 2x10A, ambient temperature: 25°C
Standby power losses typ. 0.11W 0.21W at no output current
Fig. 4-1 Power losses Fig. 4-2 Test setup for power loss measurements
Power Losses, typ.
0
02.55 15
0.5
1.0
2.0
2.5
3.0
2012.57.5 10 17.5
1.5
3.5W
25A22.5
Output Current
60°C
25°C
Output
V
A
Power
Supply
24V, 12A
+
-
V
A
I 1
I 2
U 1
U 2
A
V
I OUT
U OUT
I 1 I 2 = U 2 U 1 =Losses U 1 = U OUT -
*
I 1 +)(
*
U 2
*
I 2 I OUT
Variable
Load,
0-24A
YR20.242
Input 1
Input 2
Output
Power
Supply
24V, 12A
+
-
5. LIFETIME EXPECTANCY AND MTBF
The redundancy module has two input channels which are completely independent from each other. Each control
circuit, auxiliary voltage source, or other circuitry in the module are designed separately for each input. The dual input
redundancy module can be considered as two single redundancy modules combined together in one housing. The only
common point is the circuit trace that ties the two separate circuits together at the output.
The MTBF figures below are for the entire dual input module. If the MTBF number of only one path is needed, simply
double the value from the table.
Input / output current
conditions
Input: 2x5A
Output: 10A
Input: 2x10A
Output: 20A
Lifetime expectancy
*)
553 000h
*)
355 000h
*)
at 24V and 40°C
1 563 000h
*)
1 003 000h
*)
at 24V and 25°C
MTBF
**)
SN 29500, IEC 61709 10 050 000h 7 895 000h at 24V and 40°C
16 777 000h 13 403 000h at 24V and 25°C
MTBF
**)
MIL HDBK 217F 2 030 000h 1 890 000h Ground Fixed GF40 (24V and 40°C)
2 801 000h 2 588 000h Ground Fixed GF25 (24V and 25°C)
441 000h 404 000h Ground Benign GB40 (24V and 40°C)
604 000h 548 000h Ground Benign GB25 (24V and 25°C)
*) The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime
expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to the
capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years
(131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a
device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.
Jul. 2017 / Rev. 1.3 DS-YR20.242-EN All parameters are typical values specified at 24V, 20A output current, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
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