Datasheet

www.recom-power.com
REV.: 4/2018 I-2
DC/DC Converter
Specifications (refer to standard application circuit, Ta= 25°C)
R-6xxxP_D
Series
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Quiescent Current min. Vin to max.
6mA 10mA
Internal Power Dissipation ta<60°C
1.0W
Output Current Limit
4A 4.5A 5A
Minimum Load
10%
ON/OFF CTRL
(4)
DC-DC ON
DC-DC OFF
Open or high (Power ON), 2V min. / 10V max.
Low (Power OFF) 0.8V max.
Input Current of CTRL Pin DC-DC OFF
100µA
Internal Operating Frequency
200kHz 250kHz 300kHz
Output Ripple and Noise
R-61xxx
R-62xxx
40mVp-p
40mVp-p
100mVp-p
120mVp-p
Maximum Capacitive Load
normal start-up time, no external diodes 200µF
<1 second start-up time + diode protection circuit 6800µF
continued on next page
How to calculate the max output current
Line Derating
100
80
85
60
40
20
0
Ambient Temperature [°C]
Internal Power Dissipation [W]
0 0.5 0.7 1.0 1.5
100
90
80
70
60
50
40
30
20
10
0
Output Load [%]
Input Voltage [VDC]
9 11 14 16 12 20 24 28 32
R-62xx
R-61xx
Iout=
P
D
Vout x (1-Eff
max Vin
)
P
D
= Iout x Vout x (1-Eff
max Vin
)
The internal power dissipiation (P
D
) follows the equation:
Vin = 32V
Vout = 12V
Eff
max Vin
= 93%
P
D
= 1W
T
Ambient
= 60°C
Vin = 14V
Vout = 12V
Eff
max Vin
= 96%
P
D
= 1W
T
Ambient
= 60°C
Iout=
1W
= 1.19A
12V x (1-0.93 )
Iout=
1W
= 2.08A
12V x (1-0.96 )
Calculation 1: Calculation 2:
Example: R-6212P
Notes:
Note4: ON/OFF pin driven by TTL (logic gate), open-collector bipolar transistor or open-drain MOSFET