Datasheet

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date
01/30/2014
page
1 of 10
SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
FEATURES
•
•
•
•
•
•
400 W isolated output
industry standard full brick package
4:1 input range (9~36, 18~75 Vdc)
single regulated outputs from 5Vdc to 48 Vdc
1,500 Vdc isolation
over current protection, over voltage protection, input under
voltage lockout protection, and over temp. protection
• remote on/off
• without tantalum capacitors inside
• efficiency up to 90%
MODEL
input
voltage
output
voltage
output
current
output
power
ripple
and noise1
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
VFB400W-Q24-S5
24
9~36
5
80
400
100
87.5
VFB400W-Q24-S12
24
9~36
12
33.3
400
120
86
VFB400W-Q24-S24
24
9~36
24
16.7
400
240
87
VFB400W-Q24-S28
24
9~36
28
14.3
400
280
87
VFB400W-Q24-S48
24
9~36
48
8.3
400
480
86.5
VFB400W-Q48-S5
48
18~75
5
80
400
100
89
VFB400W-Q48-S12
48
18~75
12
33.3
400
120
88.5
VFB400W-Q48-S24
48
18~75
24
16.7
400
240
90
VFB400W-Q48-S28
48
18~75
28
14.3
400
280
90
VFB400W-Q48-S48
48
18~75
48
8.3
400
480
89.5
Notes:
1. Ripple and noise measured at full load, 20 MHz BW with 10μF tantalum capacitor and 1μF ceramic capacitor across output. The 48 Vdc output models require a 10μF
aluminum capacitor and 1μF ceramic capacitor across the output
2. An external input capacitor of 1000μF for 24 Vdc input models and 330μF for 48 Vdc input models is recommended to reduce input ripple voltage.
PART NUMBER KEY
VFB400W - QXX - SXXX
Base Number
Input Voltage
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Output Voltage
Remote On/Off Control
"blank" = positive logic
N = negative logic
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 2 of 10
INPUT
parameter
conditions/description
operating input voltage
24 Vdc input models
48 Vdc input models
min
typ
max
units
9
18
24
48
36
75
Vdc
Vdc
24 Vdc input
power up
power down
8.5
7.5
Vdc
Vdc
48 Vdc input
power up
power down
17
15
Vdc
Vdc
24 Vdc input
power up
power down
40
42
Vdc
Vdc
48 Vdc input
power up
power down
80
83
Vdc
Vdc
under voltage shutdown
over voltage shutdown
start-up time
positive logic
CTRL
negative logic
250
ms
models ON (0~0.01 mA)
models OFF (1.0~10 mA)
models ON (1.0~10 mA)
models OFF (0~0.01 mA)
filter
pi filter
input fuse
80A time delay fuse for 24 Vin models,
40A time delay fuse for 48 Vin models
OUTPUT
parameter
conditions/description
min
output capacitance
5V output models
12V output models
24V and 28V output models
48V output models
680
330
330
100
line regulation1
load regulation1
1
typ
max
units
10,000
10,000
4,700
2,200
μF
μF
μF
μF
from low line to high line
±0.2
%
from full load to no load
±0.5
%
±1.5
%
voltage accuracy
1
load share accuracy
2
from 50~100% load
±10
adjustability
80
switching frequency
transient response
230
25% load step change
temperature coefficient
power good (IOC)
Vout ready: low level, sink current
Vout not ready: open drain output, applied voltage
auxiliary output voltage/current
10 ±3 Vdc, 20 mA max.
Note:
%
110
%
KHz
500
μs
±0.03
%/°C
20
50
mA
V
max
units
150
%
1. Minimum capacitor values are required on the output to maintain the specified regulation.
2. Excludes 5 Vdc output models.
PROTECTIONS
parameter
conditions/description
short circuit protection
continuous
min
over current protection
110
over voltage protection
over temperature protection
typ
115
shutdown
140
110
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%
°C
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 3 of 10
SAFETY AND COMPLIANCE
parameter
conditions/description
isolation voltage
for 1 minute, input to output, input to case, or
output to case
min
UL 60950
MTBF
at full load, 25 °C, as per MIL-HDBK-217F
RoHS
2011/65/EU (CE)
max
units
1,500
Vdc
10
MΩ
340,000
hours
isolation resistance
safety approvals
typ
ENVIRONMENTAL
parameter
conditions/description
min
max
units
operating case temperature
see derating curve
-40
100
°C
-55
110
°C
95
%
max
units
260
°C
storage temperature
humidity
typ
non-condensing
SOLDERABILITY
parameter
conditions/description
wave soldering
see wave soldering profile
min
typ
Notes:
1.
2.
3.
4.
5.
Temperature (°C)
300
Soldering materials: Sn/Cu/Ni
Ramp up rate during preheat: 1.4°C/s (from 50°C to 100°C)
Soaking temperature: 0.5°C/s (from 100°C to 130°C), 60±20 seconds
Peak temperature: 260°C, above 250°C for 3~6 seconds
Ramp down rate during cooling: -10°C/s (from 260°C to 150°C)
250
200
150
100
50
0
0
20
40
MECHANICAL
parameter
conditions/description
min
dimensions
4.60 x 2.40 x 0.50 (116.8 x 61.0 x 12.7 mm)
case material
aluminum baseplate with plastic case
weight
60
80
100
Time (Seconds)
typ
140
160
max
180
units
inch
220
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120
g
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 4 of 10
MECHANICAL DRAWING
units: inch[mm]
tolerance: X.XX = ±0.02[±0.5]
X.XXX = ±0.010[±0.25]
pin diameter tolerance: ±0.004[±0.1]
4.099[104.11]
3.949[100.30]
3.799[96.49]
3.649[92.68]
3.499[88.87]
3.349[85.06]
PIN CONNECTIONS
+Vo
8
-Vo
9
-Vo
10
-Vo
11
-S
12
+S
13
TRIM
14
PC/NC
15
IOC
16
AUX
-
+
2
-Vo
7
3
4
6
5
0.199[5.05]
4.20[106.7]
Mounting Inserts
3.5 Through 4Pl.
4.60[116.8]
2.4mm P LAT E D T HR OUG H HOLE
4.8mm P AD S IZE
3.5mm NON T HR OUG H HOLE
1.4mm P LAT E D T HR OUG H HOLE
2.8mm P AD S IZE
PCB Layout
Top View
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-Vo
+Vo
+Vo
+Vo
2.40[61.0]
7
+Vin
-Vo
2.00[50.8]
2.251[57.17]
+Vo
8
-Vo
0.20[5.1]
6
9
0.900[22.86]
+Vo
-Vin
1.400[35.56]
5
10
1
0.501[12.72]
+ON/OFF
0.400[10.16]
-ON/OFF
4
ON/OFF
3
0.751[19.07]
+Vin
0.50[12.7]
-Vin
2
0.22[5.5]
1
16 AUX
15 IOC
14 PC/NC
13 TRIM
12 +S
11 -S
Function
1.701[13.20]
1.301[33.04]
0.901[22.88]
Pin
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 5 of 10
DERATING CURVES
VFB400W-Q24-S5 Derating Curves
VFB400W-Q24-S12 Derating Curves
120%
100%
120%
-10
-40
30
100%
60%
64%
40%
60%
40%
Natural Convection
400 ft./min.
20%
0%
-40
-30
-20
-10
800 ft./min.
100
0
10
20
30
40
50
60
70
80
90
0%
-40
100
-30
-10
0
10
20
30
40
50
60
70
80
Temperature (ɗ)
VFB400W-Q24-S24 Derating Curves
VFB400W-Q24-S28 Derating Curves
90
100
120%
-15
-40
27
100%
27
-15
-40
80%
Load
80%
60%
61%
60%
61%
40%
40%
Natural Convection
Natural Convection
400ft./min.
20%
0%
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
VFB400W-Q24-S48 Derating Curves
-20
24
80%
60%
59%
40%
Natural Convection
400ft./min.
800 ft./min.
0%
-40
-30
-20
-10
100
0
10
20
30
40
0%
-40
-30
-20
-10
100
0
10
20
30
40
Temperature (ɗ)
120%
20%
800 ft./min.
100
Temperature (ɗ)
-40
400ft./min.
20%
800 ft./min.
Load
-20
100
Temperature (ɗ)
120%
Load
400ft./min.
20%
800 ft./min.
100%
20
64%
Natural Convection
100%
-25
80%
Load
Load
80%
-40
50
60
70
80
90
100
Temperature (ɗ)
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50
60
70
80
90
100
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 6 of 10
DERATING CURVES (CONTINUED)
VFB400W-Q48-S5 Derating Curves
VFB400W-Q48-S12 Derating Curves
120%
120%
100%
40
6
-40
79%
40%
60%
71%
40%
Natural Convection
Natural Convection
400 ft./min.
20%
0%
-40
-30
-20
-10
800 ft./min.
100
0
10
20
30
40
50
60
70
80
90
0%
-40
100
-30
0
10
20
30
40
50
60
70
80
VFB400W-Q48-S24 Derating Curves
VFB400W-Q48-S28 Derating Curves
90
100
120%
15
-40
46
100%
-40
46
15
80%
82%
Load
82%
60%
60%
40%
40%
Natural Convection
Natural Convection
400ft./min.
20%
0%
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
120%
11
-40
43
100%
80%
78%
40%
Natural Convection
400ft./min.
800 ft./min.
-30
-20
-10
100
0
10
20
30
40
0%
-40
-30
-20
-10
100
0
10
20
30
40
Temperature (ɗ)
VFB400W-Q48-S48 Derating Curves
0%
-40
800 ft./min.
100
Temperature (ɗ)
20%
400ft./min.
20%
800 ft./min.
Load
-10
Temperature (ɗ)
80%
60%
-20
100
Temperature (ɗ)
120%
Load
400ft./min.
20%
800 ft./min.
100%
37
80%
Load
Load
80%
60%
1
-40
100%
50
60
70
80
90
100
Temperature (ɗ)
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50
60
70
80
90
100
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 7 of 10
APPLICATION NOTES
1. Parallel Operation
The VFB400W series (excluding the 5 Vdc output models), are designed for parallel operation. When in parallel the load current
can be shared equally between the two modules by connecting their PC pins. The VFB400W can be setup in two different modes to
achieve parallel operation. The standard parallel operation is suitable when load cannot be handled by a single unit, whereas the N+1
redundant operation is suitable for loads when backup power is required.
Figure 1
Standard Parallel Connection
Figure 2
Parallel Connection With Programmed And Adjustable Output
+S
+S
+V
+V
-V
-S
PC
-V
-S
TRIM
PC
L
O
A
D
+S
+S
+V
+V
-V
-S
TRIM
PC
-V
-S
PC
Figure 3
N+1 Redundant Connection
Figure 4
N+1 Redundant Connection With Programmed Output And Adjustable
Output Voltage
+S
+S
+V
+V
-V
-S
-V
-S
TRIM
PC
+S
+V
L
O
A
D
L
O
A
D
PC
+S
+V
-V
-S
-V
-S
PC
TRIM
PC
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L
O
A
D
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 8 of 10
APPLICATION NOTES (CONTINUED)
2.
Output Voltage Trimming
Leave open if not used.
Figure 5
External Resistors
Trim-Up/Trim-Down Formulas
+S
1.24 ×(
VR
Vf =
+V
7.68 +(
Rt ×33
)
Rt + 33
Rt ×33
)
Rt + 33
-V
Vout = (Vo + VR) × Vf
-S
Note: Rt = 6.8 KΩ
VO is the nominal output voltage
VOUT is the desired output voltage (up or down)
VR is the trim resistor in KΩ
Figure 6
External DC Voltage
Trim-Up/Trim-Down Formulas
Vout = VT × VO
Note: VT is the trim terminal voltage
VO is the nominal output voltage
VOUT is the desired output voltage (up or down)
Note:
1. Models VFB400W-Q24-S24, S28 & S48 require a minimum input voltage of 13 Vdc and models VFB400W-Q48-S24, S28 & S48 require a minimum input voltage of 22 Vdc in order to trim between 100~110%.
ON/OFF Control
The converter's ON/OFF function can be controlled from the input side or from the output side. The maximum current through the
ON/OFF pin is 10mA. The resistor value has to be set appropriately to avoid the maximum current through the ON/OFF pins.
3.
(A) Controlling the ON/OFF terminal from the input side. Recommended R1 value is 12KΩ (1.0W) for 48VIN and 6KΩ (0.5W) for 24VIN
(B) Controlling the ON/OFF terminal from the output side. Recommended R2 value is 4.3KΩ (0.1W)
Figure 7
Figure 8
AUX
R2
Output
-S
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1k
SW
+ON/OFF
I(ON/OFF)
-ON/OFF
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 9 of 10
APPLICATION NOTES (CONTINUED)
4.
IOC Signal
Normal and abnormal operation of the converter can be monitored by using the I.O.C signal. Output of this signal monitor is located at the secondary side and is open collector output, you can use the signal by the internal aux power supply or the the external DC
supply as the following figures. the ground reference is the –Sense. This signal is LOW when the converter is normally operating and HIGH when the converter is disabled or when the converter is abnormally operating.
Figure 9
Internal AUX Power
5.
Figure 10
External DC Power
AUX
AUX
IOC
IOC
-S
-S
DC
Test Configuration
Figure 11
A
DC
Notes:
+Vin
C1
V
R1
Table 1
Recommended External components
+Vout
+S
+ON/OFF
-ON/OFF
TRIM
-Vin
-Vout
-S
C2
A
Load
C1
< 0.7 Ω ESR
1000 μF/50 V (24 Vin models)
330 μF/100 V (48 Vin models)
C2
Choose according to the output
capacitance (see page 2)
1. All specifications measured at nominal line, full load, and 25°C unless otherwise specified.
2. Remote on/off control has to be connected for the converter to operate.
3. 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.
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CUI Inc │ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER
date 01/30/2014 │ page 10 of 10
REVISION HISTORY
rev.
1.0
description
date
initial release
01/30/2014
The revision history provided is for informational purposes only and is believed to be accurate.
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20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
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[email protected]
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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