Datasheet

DC/DC Converter
Specifications (measured @ ta= 25°C, nominal input voltage, full load and after warm-up)
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Absolute Maximum Input Voltage
( 3sec max.)
2:1
5Vin nom.
12Vin nom.
24Vin nom.
48Vin nom.
16VDC
25VDC
50VDC
100VDC
4:1
24Vin nom.
48Vin nom.
50VDC
100VDC
Under Voltage Lockout
2:1
5Vin nom.
12Vin nom.
24Vin nom.
48Vin nom.
4VDC
8VDC
16VDC
33VDC
4.5VDC
9VDC
18VDC
36VDC
4:1
24Vin nom.
48Vin nom.
8VDC
16VDC
9VDC
18VDC
Start-up Time constant resistive load, Power up or Remote ON/OFF 30ms
Remote ON/OFF
(referenced to -Vin Pin)
DC-DC ON
DC-DC OFF
Open or 0-1.2VDC
2.2-12VDC
Current of CTRL Pin -0.5mA 1mA
Remote OFF Input Current 2.5mA
Internal Operating Frequency 225kHz 250kHz 275kHz
Output Ripple and Noise
(20MHz BW limited)
10µF/25V X7R MLCC for 3.3, 5Vout
10µF/25V X7R MLCC for 12, 15Vout
4.7µF/50V X7R MLCC for 24Vout
30mVp-p
40mVp-p
50mVp-p
MED-2
REV.: 06/2016 www.recom-power.com
Efficiency
Table1: Efficiency Crosstable Graph1: Efficiency Factor vs. Load
Calculation Example:
choose your model:
REM6-1212D
• Efficiency from Table1 (= 89% @ max Load / nom Vin)
• Loading conditions in application (e.g. 50%)
• use Eff factor from Graph1 (= 0.96 @50%)
Calculation:
T
AMBmax
= T
CASEmax
- T
OVER
= 105 - 9.2 = 95.8°C
T
OVER
= R
th
* P
DIS50%
= 18 * 0.51 = 9.2°C
P
DIS50%
= P
in50%
- P
out50%
=
P
out100%
* 0.5
- (P
out100%
* 0.5) = 3.51 - 3 = 0.51W
Eff
50%
Eff
50%
= Eff
100%
* Eff
factor50%
= 89 * 0.960 = 85.44%
Vin = 12V
Iout = 50%
Eff
100%
= 89%
Eff
factor50%
= 0.96
R
th
= 18°C/W
T
CASEmax
= 105°C
Load [%]
Efficiency Factor [ ]
100 20 30 40 50 60 70 80 90 100
0.0
0.2
0.4
0.6
0.8
1.2
1.0
Efficiency Crosstable (%) @ full load
Input Voltage
5 12 24 48 24W 48W
Output Voltage
3.3S
81.5 83.5 83 82.5 83 82.5
05S
86 86 86 86.5 86 86.5
12S
86 89 89 88 89 88
15S
87.5 88.5 89 88.5 89 88.5
24S
87 88.5 88.5 88 88.5 88
05D
84 85 85 85 85 85
12D
86.5 89 88.5 88 88.5 88
15D
87.5 88 88.5 87 88.5 87
REM6
Series
10 20 30 40 50 60 70 80 90 100
Load [%]
50
60
70
80
90
100
Efficiency [%]