FHS21ZK8 [BEL]
DC-DC Regulated Power Supply Module, 1 Output, 500W, Hybrid;
| 型号： | FHS21ZK8 |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 500W, Hybrid |
| 文件： | 总11页 (文件大小：162K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Features
•
•
Low profile – 12.7 mm height
Input/output isolation: 1500VDC, Basic
insulation, 2250VDC withstand capability
High efficiency - up to 93% at full load
Start-up into high capacitive load
Low conducted and radiated EMI
Output overcurrent protection
Output overvoltage protection
Overtemperature protection
•
•
•
•
•
•
•
•
Applications
Remote sense
Remote on/off (primary referenced), positive
or negative logic option
• Distributed power architectures
• Telecommunications equipment
• LAN/WAN applications
•
•
Output voltage trim adjust, positive or
negative option
UL 1950 Recognition, CSA 22.2 No. 950-95
certification, TUV IEC950
• Data processing applications
Description
The FHS Series power modules are DC/DC converters that operate over an input voltage range of 36 to 75VDC and
provide a regulated DC output voltage at up to 42 amps of output current. The output is fully isolated from the input,
which allows a positive or negative output configuration.
The open-frame module is constructed with a two-board approach. The power devices are connected to an
Insulated Metal Substrate (IMS) base plate, which provides very low thermal impedance. A separate PCB is
populated with the control circuitry and is physically isolated from the hotter IMS board. This approach allows for
lower component temperatures, hence increased reliability. The standard feature set includes remote on/off, remote
output voltage sensing, positive logic output trim (optional negative logic output trim available), input under and
overvoltage lockout and overtemperature shutdown with hysteresis.
A microcontroller has been employed within the supervisory circuitry offering increased flexibility in the product’s
feature set. (Remote on/off logic can be selected at the time of manufacture to be either positive or negative with a
simple program change. Similarly, overcurrent protection and output overvoltage protection functions can be
changed from the normal non-latching mode to latching mode with a simple program change. Specific changes
should be discussed with the factory.)
Selection Chart
Model
Input
voltage
(VDC)
36-75
36-75
36-75
Input
current,
Max, (ADC)
Output Output rated
Output
Ripple/Noise
(mV p-p)
Typical
Efficiency
@ I rated, (%)
92.5
voltage
(VDC)
current
rated, (ADC)
I
FHS42ZH
FHS21ZK
FHS18Z28
16
16
16
12
24
28
42
21
18
100
150
150
92.5
93
This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use
equipment should be followed.
REV. SEP 20, 2002
Page 1 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely effect long-
term reliability and cause permanent damage to the converter.
Parameter
Input voltage
Conditions/Description
Continuous
Transient, 100ms (non operating)
Min
Max
75
100
115
125
7
Units
VDC
VDC
°C
°C
VDC
Operating Temperature
Storage Temperature
ON/OFF Control Voltage
Base Plate Temperature
-40
-40
Referenced to -Vin
Environmental and Mechanical Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
Parameter
Shock
Sinusoidal Vibration
Weight
Conditions/Description
Halfsine wave, 3 axes
GR-63-Core, Section 5.4.2
Min
50
1
Nom
Max
Units
g
g
1.2/35
Yes
1,000
Oz/g
Water Washing
MTBF
Standard process
Per Bellcore TR-NWT-000332
kHrs
Isolation Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Insulation Safety Rating
Isolation Voltage
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Basic
Input to output, input to base plate 2250
VDC
VDC
MOhm
pF
Output to base plate
2250
10
1000
Input Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
Parameter
Input Voltage
Turn-On Input Voltage
Turn-Off Input Voltage
Input over voltage protection
Turn-On Time
Conditions/Description
Continuous
Min
36
Nom
48
34
Max
75
Units
VDC
VDC
VDC
VDC
ms
Ramping Up
Ramping Down
Ramping up
33
76
84
5
To Output Regulation Band
100% Resistive Load
Full Load, 12uH source
inductance
Input Reflected Ripple Current
Inrush Transient
60
mA p-p
A2s
Vin=Vin.max
0.1
REV. SEP 20, 2002
Page 2 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Output Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Voltage Setpoint Accuracy
Vin=Vin.nom, Full Load
12V
24V
28V
-2
-2
-2
10
2
2
2
%Vout
%Vout
%Vout
Output Current
100
See selection chart for Irated
%Irated
%Vout
Line Regulation
Load Regulation
0.2
0.5
Vin.min to Vin.max, Irated
Vin=Vin.nom, 10% to
%Vout
100%Irated
Total output voltage regulation
Over all input voltage, load,
and temperature conditions
-3
3
%Vout
%Vout
Remote Sense Headroom
5%
Dynamic Regulation
50-75% load step change
to 1% error band
Peak Deviation
12V
24V
28V
150
250
250
500
750
750
mV
mV
mV
Settling Time
12V
500
250
250
500
750
750
µs
µs
µs
24V
28V
Admissible Load Capacitance
100
150
µF/A
I
rated, resistive load, Nom Vin
Output Current Limit Threshold**
Vout≤0.97Vout.nom
110
%Irated
kHz
%Vout
Switching Frequency
Overvoltage Protection,
Non Latching
400
Over all input voltage and
load conditions
120
90
140
110
Trim Range
%Vout
Irated, Vin=Vnom
** Overcurrent protection is non-latching with auto recovery.
REV. SEP 20, 2002
Page 3 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Feature Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted.
Parameter
Shutdown (ON/OFF)
Negative Logic
Converter ON
Source Current
Converter OFF
Open Circuit Voltage
Positive Logic
Conditions/Description
On/Off signal is low – converter is ON
ON/OFF pin is connected to -Vin
Min
Nom
Max
Units
-0.5
2.5
0.8
1
7
VDC
mADC
VDC
ON/OFF pin is floating
On/Off signal is low–converter is OFF
5
VDC
Converter ON
2.5
-0.5
120
7
5
0.8
1
VDC
VDC
VDC
mADC
°C
Open Circuit Voltage
Converter OFF
Source Current
Overtemperature
Protection
ON/OFF pin is floating
ON/OFF pin is connected to -Vin
Baseplate temperature
130
REV. SEP 20, 2002
Page 4 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Characteristic Curves
18
16
14
12
10
8
FHS42ZH Efficiency vs. Load
Tamb=25C
100.00
98.00
96.00
94.00
92.00
90.00
88.00
86.00
84.00
82.00
80.00
78.00
76.00
74.00
72.00
70.00
6
36.00
48.00
75.00
4
2
0
20
30
40
50
60
70
80
Input Voltage (V)
10%
20%
30%
40%
50%
60%
70%
80%
90% 100%
LOAD (%)
Fig. 4 FSH42ZH Input Characteristic
Fig. 1 FHS42ZH Efficiency vs. Output Load
18
16
14
12
10
8
Efficiency vs. Load
Tamb=25C
100.00
98.00
96.00
94.00
92.00
90.00
88.00
86.00
84.00
82.00
80.00
78.00
76.00
74.00
72.00
70.00
6
4
36.03
48.04
75.05
2
0
0
10
20
30
40
50
60
70
80
Input Voltage (V)
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
LOAD (%)
Fig. 5 FHS21ZK Input Characteristic
18
16
14
12
10
8
Fig. 2 FHS21ZK Efficiency vs. Output Load
FHS18Z28 Efficiency vs. Load
Tamb=25C
100.00
98.00
96.00
94.00
92.00
90.00
88.00
86.00
84.00
82.00
80.00
78.00
76.00
74.00
72.00
70.00
6
36.00
48.00
75.00
4
2
0
0
10
20
30
40
50
60
70
80
Input Voltage (V)
10%
20%
30%
40%
50%
60%
70%
80%
90% 100%
LOAD (%)
Fig. 6 FHS18Z28 Input Characteristic
Page 5 of 11
Fig. 3 FHS18Z28 Efficiency vs. Output Load
REV. SEP 20, 2002
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Typical Application
Figure 7 below shows the recommended connections
for the FHS Series converter.
The user should avoid connecting a resistor
between the ON/OFF pin and the +Vin pin.
When the ON/OFF pin is used to achieve remote
control, the user must take care to insure that the
pin reference for the control is really the -Vin pin.
The control signal must not be referenced ahead of
EMI filtering, or remotely from the unit. Optically
coupling the information and locating the optical
coupler directly at the module will solve any of
these problems.
FHSXXZX
Fuse
+Vo
+Vi
+Sense
C1
C2
C3
Trim
On/Off
-Vi
-Sense
-Vo
Note:
If the ON/OFF pin is not used, it can be left floating
(positive logic), or connected to the -Vin pin
(negative logic).
Fig.7 Typical Application of FHS Series
The FHS Series converters do not require any external
components for proper operation. However, if the
distribution of the input voltage to the converter
contains significant inductance, the capacitor C1 may
be required to enhance performance of the converter.
A minimum of a 33μF electrolytic capacitor with the
ESR<0.7Ω is recommended for the FHS Series.
Output Voltage Trim
Industry Standard Positive Trim (suffix –T) The
-T option units trim up with a resistor from the TRIM
pin to the Vsense pin and trim down with a resistor
from the TRIM pin to the VsenseRTN pin as shown
in the Figure 8.
Refer to the “Inrush Current Control Application Note”
on www.power-one.com for suggestions on how to limit
the magnitude of the inrush current.
For output decoupling we recommend to use a 10μF
tantalum and a 1μF ceramic capacitors connected
directly across the output pins of the converter. Note,
that the capacitors do not substitute the filtering
required by the load.
Shutdown Feature Description
The ON/OFF pin in the FHS Series converters
functions as a normal soft shutdown. It is referenced
to the –Vin pin or signal ground (see Figure 7). With
the positive logic, when the ON/OFF pin is pulled low,
the output is turned off and the unit goes into a very
low input power mode.
With negative logic, when the ON/OFF pin is pulled
low, the unit is turned on.
An open collector switch is recommended to control
the voltage between the ON/OFF pin and the -Vin pin
of the converter. The ON/OFF pin is pulled up
internally, so no external voltage source is required.
Fig.8 FHS Series Positive Trim Schematic
REV. SEP 20, 2002
Page 6 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
The equations below determine the trim resistor value
required to achieve a ΔV change in the output voltage.
Model #
A Value
FHS42ZH
FHS21ZK
FHS18Z28
21.9
46.3
54.4
4.17Vo(100 + ∆%) 510
Radj − up =
−
− 42.2) kΩ
∆%
∆%
Notes:
510
1. When the output voltage is trimmed up, the
output power from the converter must not
exceed its maximum rating. The power is
determined by measuring the output voltage on
the output pins, and multiplying it by the output
current.
Radj − down =
− 42.2) kΩ
∆%
where ΔV% is the output voltage change expressed in
percents of the nominal output voltage, Vout.
Negative Logic Trim The negative logic trim unit
trims down with a resistor from trim to Vsense, and
trims up with a resistor from trim to VsenseRTN (see
figure 9).
2. In order to avoid creating apparent load
regulation degradation, it is important that the
trim resistors are connected directly to the
remote sense pins, and not to the load or to
traces going to the load.
3. The FHS Series converters will trim down
further than the 10% limit. In general, this is
permissible. The user must confirm that the
results are acceptable in the application.
Safety Considerations
The FHS Series converters feature 1500 Volt DC
isolation from input to output. The input-to-output
resistance is greater than 10MΩ. These converters
are provided with Basic insulation between input
and output circuits according to all IEC60950 based
standards. Nevertheless, if the system using the
converter needs to receive safety agency approval,
certain rules must be followed in the design of the
system. In particular, all of the creepage and
clearance requirements of the end-use safety
requirements must be observed. These documents
include UL60950 - CSA60950-00 and EN60950,
although other or additional requirements may be
needed for specific applications.
Fig 9 FHS Negative Trim Schematic
The equations below determine the trim resistor value
required to achieve a new output voltage.
The FHS Series converters have no internal fuse.
The external fuse must be provided to protect the
system from catastrophic failure as shown in Figure
7. The fuse with a rating not greater than 20A is
recommended. The user can select a lower rating
fuse based upon the highest inrush transient at the
maximum input voltage and the maximum input
current of the converter, which occurs at the
minimum input voltage. Both input traces and the
chassis ground trace (if applicable) must be
capable of conducting a current of 1.5 times the
2.49
Radj − up =
− 20 kΩ
2.49/(1.225* A/(Voadj −1.225)) −1
A
Radj − down =
− 20 kΩ
A/ 2.03(Voadj −1.225) −1
REV. SEP 20, 2002
Page 7 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
value of the fuse without opening. The fuse must not
be placed in the grounded input line, if any.
In order for the output of the FHS Series converter to
be considered as SELV (Safety Extra Low Voltage) or
TNV-1, according to all IEC60950 based standards,
one of the following requirements must be met in the
system design:
•
If the voltage source feeding the module is SELV
or TNV-2, the output of the converter may be
grounded or ungrounded.
•
If the voltage source feeding the module is ELV,
the output of the converter may be considered
SELV only if the output is grounded per the
requirements of the standard.
•
If the voltage source feeding the module is a
Hazardous Voltage Secondary Circuit, the voltage
source feeding the module must be provided with
at least Basic insulation between the source to the
converter and any hazardous voltages. The entire
system, including the FHS converter, must pass a
dielectric withstand test for Reinforced insulation.
Design of this type of systems requires expert
engineering and understanding of the overall
safety requirements and should be performed by
qualified personnel.
REV. SEP 20, 2002
Page 8 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
FHS42ZH Maximum Output Current vs. Ambient
Temperature,
Baseplate maintained @ 115 DegC, no heat sink
Thermal Considerations
The FHS Series converters are designed for natural or
forced convection cooling. The maximum allowable
output current of the converters is determined by
meeting the derating criteria for all components used in
45
40
35
30
25
20
15
the converters.
For example, the maximum
semiconductor junction temperature is not allowed to
exceed 125°C to ensure reliable long-term operation of
the converters. Contact Power-One for the complete
list of the derating criteria.
100LFM
200LFM
300LFM
400LFM
Figure 10 shows the maximum output current of the
FHS Series at different ambient temperatures under
both natural and forced (longitudinal airflow direction,
from pin 1 to pin 4) convection.
20
25
30
35
40
45
50
55
Ambient Temperature (Deg C)
For example, from Figure 10, the FHS operating at
50C can deliver up to 26A reliably with 100LFM forced
air, while up to 38A reliably with 400LFM forced air.
Fig.10 FHS42ZH (12V) Derating Curves
REV. SEP 20, 2002
Page 9 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Mechanical Drawing
Mechanical Tolerances
Pin
1
2
3
4
5, 6, 7
8,9,10
11
12
13
Function
-Vin
+Vin
Sgnd
On/off
Vout
-Vout
-Sense
+Sense
Trim
Inches
X.XX +/-0.020
X.XXX +/-0.010
Millimeters
X.X +/-0.5
X.XX +/-0.25
Pin
+/-0.002
+/-0.05
14
NU
15
IOG
REV. SEP 20, 2002
Page 10 of 11
FHS Series – 500W Full-Brick DC/DC Converter
48V Input
Preliminary Data Sheet
12V, 24V, 28V Output
Ordering Information
Options
Suffixes to add to part number
Positive- Standard, no suffix required
Negative- Add “N” suffix
Remote ON/OFF
Trim
Negative- No suffix required
Positive - Add “T” suffix
Pin Length
0.18”- Standard, no suffix required
0.11”- Add “8” suffix
0.15”- Add “9” suffix
Notes
1. Consult factory for the complete list of available options.
2. Power-One products are not authorized for use as critical components in life support systems, equipment used in hazardous
environments, or nuclear control systems without the express written consent of the respective divisional President of Power-One,
Inc.
3. Specifications are subject to change without notice.
REV. SEP 20, 2002
Page 11 of 11
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