Ordering information
DC-DC Converters Power Module type
CQH S 250 48
50 -O
6
CQHS250
1
2
3
4
5
1Series name
2Single output
3Output wattage
4Input voltage
R
48:DC36 - 76V
5Output voltage
6Optional
R :with Remote ON/OFF
Positive logic control
N :Auto restart in protection
circuit working
B :Base plate option with
Mounting hole M3
L2:Pin length 5.3mm
MODEL
CQHS2504832
CQHS2504850
250
MAX OUTPUT WATTAGE[W]
DC OUTPUT
252.8
32V 7.9A
50V 5.0A
SPECIFICATIONS
MODEL
CQHS2504832
DC36 - 76
5.60typ
94typ
CQHS2504850
VOLTAGE[V]
CURRENT[A]
*1
*1
5.54typ
94typ
INPUT
EFFICIENCY[%]
START-UP VOLTAGE[V]
HYSTERESIS VOLTAGE[V]
VOLTAGE[V]
DC32 - 36
DC2 min
32
50
CURRENT[A]
7.9
5.0
LINE REGULATION[mV]
LOAD REGULATION[mV]
-20 to +85C
64max
100max
100max
64max
CQHS
255max
320max
400max
500max
*2
Vin=36-60V
-20 to +85C
Vin=60-76V
RIPPLE[mVp-p]
*2
*2
*2
320max
320max
410max
500max
500max
650max
1000max
185max
-
40 to -20C
OUTPUT
-20 to +85C
RIPPLE NOISE[mVp-p]
*2
-40 to -20C
TEMPERATURE REGULATION[mV] -40 to +85C 640max
*3
120max
DRIFT[mV]
200max (DCIN 48V, Io=100%)
START-UP TIME[ms]
Fixed (TRM pin open), adjustable by external resistor
*
4
OUTPUT VOLTAGE ADJUSTMENT RANGE[V]
26.88 - 35.20
31.68 - 32.32
45.0 - 55.0
*1
49.50 - 50.50
OUTPUT VOLTAGE SETTING[V]
OVERCURRENT PROTECTION Works over 105% of rating, low voltage protection (shut down) function is built-in.
PROTECTION
CIRCUIT AND
OTHERS
OVERVOLTAGE PROTECTION[V] 36.80 - 44.80
56.50 - 67.50
REMOTE SENSING
REMOTE ON/OFF
INPUT-OUTPUT
Provided
Provided (Negative Logic L : ON, H :OFF)
DC1,500V or AC500V 1minute, Cutoff current = 10mA, DC500V 50MWmin (20±15C)
DC1,500V or AC500V 1minute, Cutoff current = 10mA, DC500V 50MWmin (20±15C)
AC500V 1minute, Cutoff current = 100mA, DC500V 50MWmin (20±15C)
*
5
5
ISOLATION
INPUT-BASE PLATE
OUTPUT-BASE PLATE
*
OPERATING TEMP.,HUMID.AND ALTITUDE -40 to +85C, 20 - 95%RH (Non condensing) (Refer to DERATING CURVE), 3,000m (10,000 feet) max
STORAGE TEMP.,HUMID.AND ALTITUDE -40 to +100C, 20 - 95%RH (Non condensing), 9,000m (30,000 feet) max
ENVIRONMENT
2
VIBRATION
10 - 55Hz, 49.0m/s (5G), 3minutes period, 60minutes each along X, Y and Z axis
2
IMPACT
196.1m/s (20G), 11ms, once each along X, Y and Z axis
SAFETY
OTHERS
AGENCY APPROVALS
UL60950-1, C-UL (CSA60950-1), EN60950-1
57.9X10.5X22.76mm [2.28X0.41X0.9 inches] (WXHXD) / 30g max
CASE SIZE/WEIGHT
COOLING METHOD
*5
58.4X12.7X23.26mm [2.3X0.5X0.92 inches] (WXHXD) / 45g max
Convection / Forced air / Conduction
*1 At rated input(DC48V), rated load. Ta= 25C, 2m/s.
*2 Ripple and ripple noise is measured by using measuring board. Refer to the manual.
*3 Drift is the change in DC output for an eight hour period after a half-hour warm-up at 25C, with the input voltage held constant at the rated input/output.
*4 When the input voltage is in the range of DC36-40V, output voltage is limited. Refer to the manual.
*5 Base Plate Option.
CQHS-2