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POWERLINE+
DC/DC-Converter
Specifications (typical at nominal input and 25°C unless otherwise noted)
RPP40-S_DW
Series
Weight
Packing Quantity
Ribbed Case
Baseplate Case
Ribbed Case
39g
43g
4 pcs per Tube
Safety Standards
Thermal Cycling
Vibration
Baseplate Case
Single packed
certified UL-60950-1, 1st Edition
complies with MIL-STD-810F
10-55Hz, 12G, 30 Min. along X, Y and Z
Conducted Emissions
Radiated Emissions
ESD
Radiated Immunity
Fast Transient (4)
Surge (4)
Conducted Immunity
MTBF calculated according to BELLCORE TR-NWT-000332
(5)
EN55022
EN55022
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
Class B
Class B
Perf. Criteria B
Perf. Criteria A
Perf. Criteria B
Perf. Criteria B
Perf. Criteria A
1989 x 10 3 hours
Notes :
1. Typical values at nominal input voltage and no load/full load.
2. Min. values at nominal input voltage and full load.
3. The ON/OFF pin voltage is referenced to negative input. The pin is pulled high internally.
ON/OFF control is standard with positive logic: e.g. RPP40-2405SW
Positive logic: 0= OFF, 1 = ON. The converter will be ON if the CTRL is left open.
4. Requires an external 100μF low ESR capacitor to meet EN61000-4-4 and EN61000-4-5
5. Case l: 50% Stress, Temperature at 50°C (Ground Benign).
6. To ensure a good all-round electrical contact, the baseplate is pressed firmly into place within the aluminium housing.The hydraulic press can leave
tooling marks and deformations to both the housing and baseplate. The case is anodised aluminium, so there will be natural variations in the case
colour and the aluminium is not scratch resistant. Any resultant marks, scratches and colour varations are cosmetic only and do not affect the
operation or performance of the converters.
7. Example:
R thcase-ambient = 7.3°C/W (vertical) T case = Case Temperature
R thcase-ambient = 11°C/W (horizontal) T ambient = Environment Temperature
P dissipation = Internal losses
Tcase - Tambient
R thcase-ambient = Pdissipation
Pout
P dissipation = Pin-Pout = ? - Pout
P in = Input Power
P out = Output Power
? = Efficiency under given Operating Conditions
R thcase-ambient = Thermal Impedance
P dissipation = Pin-Pout =
Pout
?
- Pout
Practical Example:
Take the RPP40-2405SW with 80% load. What is the maximum ambient operating temperature? Use converter vertical in application.
Eff min = 87% @ V nom
P out = 40W
P outapp = 40 x 0.80 = 32W
P dissipation =
Pout
?
- P out
R th =
Tcasemax - Tambient
P dissipation
--> 7.3°C/W =
115°C - Tambient
4.36W
?
= ~88% (from Eff vs Load Graph)
T ambient = 83.15°C
P dissipation =
32
0.88
- 32 = 4.36W
www.recom-international.com
REV: 0/2014
PP-33
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