V11
︳
FEATURES
* 400W Isolated Output
* Efficiency to 90%
* Fixed Switching Frequency
* Input Under Voltage Protection
* Over Temperature Protection
* Over Voltage/Current Protection
* Remote ON/OFF
* Full-Brick Size Meet Industry Standard
* Fully Isolated 1500VDC
* Without Tantalum Capacitor Inside
* CE Mark Meets 2004/108/EC
MODEL
NUMBER
CFB400W-24S05
CFB400W-24S12
CFB400W-24S24
CFB400W-24S28
CFB400W-24S48
CFB400W-48S05
CFB400W-48S12
CFB400W-48S24
CFB400W-48S28
CFB400W-48S48
CFB400W SERIES
400W WATTS 4:1 INPUT
DC-DC CONVERTERS
SINGLE OUTPUT
INPUT CURRENT
INPUT
OUTPUT OUTPUT CURRENT
VOLTAGE VOLTAGE
MIN.
MAX.
NO LOAD FULL LOAD
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
18-75 VDC
18-75 VDC
18-75 VDC
18-75 VDC
18-75 VDC
5 VDC
12 VDC
24 VDC
28 VDC
48 VDC
5 VDC
12 VDC
24 VDC
28 VDC
48 VDC
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
80 A
33.3 A
16.7 A
14.3 A
8.3 A
80 A
33.3 A
16.7 A
14.3A
8.3 A
600 mA
120 mA
120 mA
120 mA
120 mA
300 mA
60 mA
60 mA
60 mA
60 mA
19.05 A
19.36 A
19.19 A
19.18 A
19.19 A
9.36 A
9.41 A
9.28 A
9.27 A
9.27 A
(%) EFF.
(2)
(3)
CAPACITIVE
LOAD MAX.
(4, 5, 6)
10000uF
10000uF
4700uF
4700uF
2200uF
10000uF
10000uF
4700uF
4700uF
2200uF
86.5 87.5
85
88
86.5
86
87
87
85.5 86.5
88.5
89
88.5 88.5
90
90.5
88
90
90
89.5
NOTE:
1. Nominal Input Voltage 24, 48 VDC.
2. Measured at 12VDC for 24Vin, 24VDC for 48Vin.
3. Measured at Nominal Input Voltage.
4. The output terminal of 12V, 24V, 28V Vout models required a minimum capacitor 330uF to
maintain specified regulation.
5. The output terminal of 5Vout models required a minimum capacitor 680uF to maintain
specified regulation.
6. The output terminal of 48Vout models required a minimum capacitor 100uF to maintain
specified regulation.
1
V11
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25
℃
Unless Otherwise Noted
INPUT SPECIFICATIONS:
Input Voltage Range ....……………............. 24V ............................ 9-36V
48V ………............... 18-75V
Under Voltage Lockout ………..….. 24Vin power up ….…..……..…. 8.5V
24Vin power down ………….…. 7.5V
48Vin power up …….…...….…. 17V
48Vin power down …………..… 15V
Input Over Voltage Protection ….. 24Vin Turn off … 42V, Turn on ... 40V
48Vin Turn off … 83V, Turn on … 80V
Opto Isolated Remote ON/OFF (note6)
Input Filter …………………………………………………...……... LC Type
GENERAL SPECIFICATIONS:
Efficiency .................…..................................……..........…....... See Table
Isolation Voltage ..................... Input/Output ....………..….. 1500VDC min.
Input/Case .…...........…….. 1500VDC min.
Output/Case ………....…… 1500VDC min.
7
Isolation Resistance .............................…............………..... 10 ohm min.
Isolation Capacitance …………………………………………… 4000pF typ.
Switching Frequency ....................…………….……....……… 230KHz typ.
Operating Case Temperature …………………....……........ -40
℃
to 100
℃
Storage Temperature ……….………....…....……............ -55
℃
to +110℃
Thermal Shutdown Case Temp. .……….………………..……. 110
℃
typ.
Humidity .................................................... 95% RH max. Non condensing
MTBF ………. MIL-HDBK-217F, GB, 25℃, Full Load ……… 340Khrs typ.
Dimensions ..................... 4.60×2.40x0.50 inches (116.8x61.0×12.7 mm)
Case Material ................….....…… Aluminum Baseplate with Plastic Case
Weight …………………………………………………………………… 220g
OUTPUT SPECIFICATIONS:
Voltage Accuracy ........................................…………............
±1.5%
max.
Transient Response: 25% Step Load Change .……………..…… <500µs
External Trim Adj. Range ………….…………………………….. 80-110%
Load share Accuracy ……………………
±10%
at 50% to 100%Full Load
Auxiliary Output Voltage/Current …………….…… 10±3Vdc/20mA max.
Ripple & Noise, 20MHz BW (note3)
5V ……………...... 40mV RMS max., 100mV pk-pk max.
12V ……….…….... 60mV RMS max., 120mV pk-pk max.
24V ……………... 100mV RMS max., 240mV pk-pk max.
28V ……………... 100mV RMS max., 280mV pk-pk max.
48V ………….….. 120mV RMS max., 480mV pk-pk max.
Temperature Coefficient ....................………..............….....
±0.03%/°C
Short Circuit Protection .........………………......................... Continuous
Line Regulation (note1) ……………….………..................….
±0.2%
max.
Load Regulation (note2) ………………………….........….......
±0.5%
max.
Over Voltage Protection Trip Range, % Vo nom. ..................... 115-140%
Current Limit .................…………………... 110% ~150% Nominal Output
Start up time …………………………………………………….. 120ms typ.
NOTE :
1. Measured from high line to low line.
2. Measured from full load to zero load.
3. Output ripple and noise measured with 10uF tantalum and 1uF
ceramic capacitor across output.
4. The output adjustment circuit and trim equations show as figure1 and
figure2.
5. An external input capacitor 1000uF for 24Vin or 330uF for 48Vin
models are recommended to reduce input ripple voltage.
6. Standard model is negative logic , suffix “P” to the model number with
positive logic. (refer application note)
7. If the remote sense feature is not to be used, the +sense pin should be
connected to the +Vout pin and the –sense pin should be connected
to the -Vout pin. (refer application note)
CASE FB
All Dimensions In Inches(mm)
Tolerances
Inches: .XX±0.02 .XXX±0.010
Millimeters: .X±0.5
.XX±0.25
4.099[104.11]
3.949[100.30]
3.799[96.49]
3.649[92.68]
3.499[88.87]
3.349[85.06]
16
AUX
15
IOG
14
PC/NC
13
TRIM
12
+S
11
-S
Pin DIA
±0.004
±0.1
PIN CONNECTIONS
PIN NUMBER
1
-Vo
FUNCTION
-Vin
+Vin
-ON/OFF
+ON/OFF
+Vo
-Vo
-S
+S
TRIM
PC/NC
IOG
AUX
10
-Vin
1
2
2
0.900[22.86]
1.400[35.56]
9
-Vo
3
2.00[50.8]
2.251[57.17]
2.40[61.0]
8
-Vo
+Vin
4
5-7
8 - 10
11
12
1.701[13.20]
1.301[33.04]
0.901[22.88]
-
ON/OFF
3
4
7
+Vo
0.751[19.07]
6
+Vo
+
5
+Vo
0.20[5.1]
4.20[106.7]
0.501[12.72]
0.199[5.05]
0.400[10.16]
13
14
15
16
Mounting Inserts
3.5 Through 4Pl.
0.50[12.7]
0.22[5.5]
4.60[116.8]
The output voltage can be determined by
below equations:
1.24
×
(
Vf
=
7.68
+
Rt
×
33
Rt
+
33
Rt
×
33
Rt
+
33
)
Output Voltage = TRIM
Terminal Voltage * Nominal
Output Voltage
Vout
=
(
Vo
+
VR
)
×
Vf
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.
Fig.2 The schematic of
output voltage adjusted by
using external DC voltage.
2
