V14
1
︳
CFB600 SERIES
600 TO 700 WATTS 2:1 INPUT
DC-DC CONVERTERS
FEATURE
S
* 600 - 700W Isolated Output
* Efficiency to 92%
* Fixed Switching Frequency
* Input under-voltage Protection
* Over Temperature Protection
* Over Voltage/Current Protection
* Remote ON/OFF
* Industry Full-Brick Package
* Fully Isolated 1500VDC
* UL60950-1 Approval
MODEL
NUMBER
INPUT
VOLTAGE
OUTPUT
VOLTAGE
OUTPUT CURRENT
INPUT CURRENT
%
EFF.
Capacitor
Load max.
MIN. MAX. NO LOAD
FULL LOAD
CFB600-24S12 18-36 VDC
12 VDC 0 mA 50 A
150 mA 28.09 A 88
10000µF
(2)
CFB600-24S24 18-36 VDC
24 VDC 0 mA 25 A
150 mA 27.78 A 89
5000µF
(2)
CFB600-24S28 18-36 VDC
28 VDC 0 mA 21.5 A
150 mA 27.87 A 90
5000µF
(2)
CFB600-24S32 18-36 VDC
32 VDC 0 mA 19 A
150 mA 27.84 A 91
5000µF
(2)
CFB600-24S48 18-36 VDC
48 VDC 0 mA 12.5 A
200 mA 27.47 A 91
5000µF
(2)
CFB600-48S12 36-75 VDC
12 VDC 0 mA 50 A
90 mA 13.89 A 90
10000µF
(2)
CFB600-48S24 36-75 VDC
24 VDC 0 mA 25 A
100 mA 13.59 A 92
5000µF
(2)
CFB700-48S28 36-75 VDC
28 VDC 0 mA 25 A
105 mA 16.03 A 91
5000µF
(2)
CFB600-48S32 36-75 VDC
32 VDC 0 mA 19 A
90 mA 13.77 A 92
5000µF
(2)
CFB600-48S48 36-75 VDC
48 VDC 0 mA 12.5 A
130 mA 13.59 A 92
5000µF
(2)
NOTE:
1. Nominal Input Voltage 24, 48 VDC
2. The output terminal of all models required a minimum capacitor 470uF to maintain
specified regulation.
V14
2
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25℃ Unless Otherwise Noted
INPUT SPECIFICATIONS: GENRAL SPECIFICATIONS:
Input Voltage Range....……………........….......... 24V .................. 18-36V
Efficiency .................…..................................……..........…....... See Table
48V .................. 36-75V
Isolation Voltage .................... Input/Output ......……..….. 1500VDC min.
Input Surge Voltage (100ms max.) ……............. 24V …....... 50Vdc max.
Input/Case .……….………..1500VDC min.
48V .….... 100Vdc max.
Output/Case …….………… 1500VDC min.
Under voltage lockout ……….….. 24Vin power up …..…………..…. 17V
Isolation Resistance ...................................…............…….... 10
7
ohm min.
24Vin power down …...……….…. 16V
Isolation Capacitance …………………..…………..………..… 4000pF typ.
48Vin power up ……….….…...…. 35V
Switching Frequency .........…. 48S12&48S28&48S32 .….... 300KHz typ.
48Vin power down …………....…. 33V
Others ……………………... 250KHz typ.
Input over voltage protection … 24Vin Turn off …. 40V, Turn on ….. 38V
Operating Case Temperature ………………………………. -40℃ to 100℃
48Vin Turn off …. 80V, Turn on ….. 77V
Storage Temperature ……………....…....…….............. -55℃ to +105℃
Opto isolated Remote ON/OFF (note6) Thermal Shutdown, Case Temp. .………………..……..……. 110℃ typ.
Input Filter ………………………………………………..….……... PI Type
Humidity .................................................... 95% RH max. Non condensing
OUTPUT SPECIFICATIONS:
MTBF ………. MIL-STD-217F, GB, 25℃, Full Load ………… 450Khrs typ.
Voltage Accuracy ..........................................…………..........
±1.5% max.
Dimensions ........................ 4.60×2.40x0.50 inches(116.8x61.0×12.7 mm)
Transient Response:25% Step Load Change .……………….… <500us
Case Material ................….....…… Aluminum Baseplate with Plastic Case
External Trim Adj. Range ………………………………………….
60-110%
Weight …………………………………………………………….……… 220g
Load share Accuracy …….…………… ±10% at 50% to 100% Full Load
NOTE:
Auxiliary output voltage/current ……………… 10±3Vdc/20mA max.
1. Measured from high line to low line.
Ripple & Noise, 20MHz BW
2. Measured from full load to zero load.
12V …….....….... 60mV RMS max., 120mV pk-pk max.
3. Output ripple and noise measured with 10uF tantalum and 1uF
24V …………... 100mV RMS max., 240mV pk-pk max.
ceramic capacitor across output.
28V …………... 100mV RMS max., 280mV pk-pk max.
4. The output adjustment circuit and trim equations show as figure1
32V ……….….. 120mV RMS max., 320mV pk-pk max.
and figure2.
48V ……….….. 200mV RMS max., 480mV pk-pk max
5. An external input capacitor 220uF for all models are recommended to
Temperature Coefficient ....................………..............…..... ±0.03%/°C
Reduce input ripple voltage.
Short Circuit Protection .........………………......................... Continuous
6. Standard model is negative logic , suffix “P” to the model number with
Line Regulation (note1) ……………….………..................…. ±0.2% max.
positive logic. (refer application note)
Load Regulation (note2) ………………………….........…...... ±0.5% max.
7. If the remote sense feature is not to be used, the +sense pin shoul
d be
Over Voltage Protection trip Range,% Vo nom. .................... 115-140%
connected to the +Vout pin and the –sense pin should be connected
Current Limit .................……………….... 110% ~150% Nominal Output
to the -Vout pin. (refer application note Item 6.9)
Start up time ……………………………….…………….…..…... 160ms typ.
CASE FB
Mounting Through
3.5mm 4Pl.
8-0.081(2.00)
8-0.040(1.00)
Tolerances Inches: .XX±0.02 .XXX±0.010 ±0.004
Millimeters: .X±0.5 .XX±0.25 ±0.1
All Dimensions In Inches(mm) Pin DIA
0.501(12.72)
3.949(100.30)
3.799(96.49)
3.649(92.68)
3.499(88.87)
3.349(85.06)
1.701(43.20)
1.301(33.04)
0.901(22.88)
0.751(19.07)
0.020(5.05)
2.251(57.17)
0.02(5.1)
1.400(35.56)
0.900(22.86)
0.400(10.16)
2.40(61.0)
2.00(50.8)
4.20(106.7)
0.22(5.5)
0.50(12.7)
4.60(116.8)
TRIM
PC/NC
AUX
IOG
16
15
13
14
-Vin
+Vin
+ON/OFF
-ON/OFF
-S
+S
-Vo
+Vo5-7
8-10
12
11
3
4
2
1
PIN NUMBER
11
12
14
13
15
16
5
6
7
8
9
10
4
3
2
1
4.099(104.11)
PIN CONNECTIONS
FUNCTION
Output Voltage = TRIM
Terminal Voltage * Nominal
Output Voltage
Fig.2 The schematic of
output voltage adjusted by
using external DC voltage.
The output voltage can be determined by
below equations:
VfVRVoVout
Rt
Rt
Rt
Rt
Vf
×+=
+
×
+
+
×
×
=
)(
33
33
68.7
)
33
33
(24.1
Unit: KΩ
Vo: Nominal Output Voltage
Rt=6.8KΩ
Fig.1 The schematic of output voltage
adjusted by using external resistor and/or
variable resistor.
