Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 1 of 14
www.power-one.com
Applications
Distributed power architectures
Telecommunications equipment
LAN/WAN applications
Data processing
Features
Single board design
Low profile SMT design
Input/output isolation: 1500 Vdc
High current density
Output over-current protection
Full rated output power up to 80C with 200
LFM (1 m/s) airflow
Operating temperature to 100C
Remote shutdown (primary referenced)
Output voltage trim adjust, positive or
negative
UL, CSA and EN/IEC60950 (3
rd
ed.) approved
Description
The RFS series of converters are low profile, single output, DC/DC converters intended for SMT placement
and reflow soldering. The product provides on-board conversion of standard telecom and datacom input
voltages to isolated low output voltages. Proprietary patented manufacturing processes with full process
automation ensure optimal product quality. These are very high performance, cost effective converters with
a very small PCB footprint.
Selection Chart
Model
Input
voltage,
Vdc
Input
current,
max, Adc
Output
voltage,
Vdc
Output rated
current,
Adc
Output ripple
and noise,
mVp-p
Efficiency,
%
RFS06ZA-M6
36-75
0.35
1.5
6.0
70
77
RFS06ZB-M6
36-75
0.45
1.8
6.0
70
79
RFS06ZD-M6
36-75
0.55
2.5
6.0
75
83
RFS06ZE-M6
36-75
0.65
3.3
6.0
75
85
RFS04ZG-M6
36-75
0.65
5.0
4.0
50
87
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 2 of 14
www.power-one.com
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect
long term reliability and cause permanent damage to the converter. Specifications apply over specified input
voltage, output load and temperature range, unless otherwise noted.
Parameter
Conditions/Description
Min
Max
Units
Input voltage (Vin)
Transient Input Voltage (Vint)
Continuous
Transient, 100ms
36
75
100
Vdc
Vdc
Operating CaseTemp. (Tc)
At 100% load
-40
100
C
Storage Temperature (Ts)
-55
120
C
ON/OFF Control Voltage (Vrc)
Referenced to -Vin
-1.0
5.5
Vdc
Environmental and Mechanical Specifications
Specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Shock
IEC68-2-27
100
g
Sinusoidal Vibration
IEC68-2-6
10
g
Weight
0.6/17
oz/g
Water Washing
Standard process
Yes
N/A
MTBF
Per Bellcore TR-NWT-000332
2,500
kHrs
Isolation Specifications
Specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Insulation Safety Rating
Vin = 36 75Vdc
Operational
N/A
Isolation Voltage (Vps)
1,500
Vdc
Isolation Resistance (Rps)
10
MOhm
Isolation Capacitance (Cps)
8,200
pF
Input Specifications
Specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Input Voltage (Vin)
Continuous
36
48
75
Vdc
Input Current when Shutdown
Vin.Nom, Remote Control
activated
3
10
mAdc
Turn-On Input Voltage 36-75 Vin
Ramping Up, Io.Max
32
34
36
Vdc
Turn-Off Input Voltage 36-75 Vin
Ramping Down, Io.Max
30
32
34
Vdc
Turn-On Time
To Output Regulation Band
After Remote Control
Rise Time
60
30
5
ms
ms
ms
Input Reflected Ripple Current
Vin.Max, Io.Max
50
mAp-p
Input Capacitance
1.4
F
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 3 of 14
www.power-one.com
Output Specifications
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
RFS06ZA: 1.5V/6.0A
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Voltage
Setpoint Accuracy
Vo
Vin.Nom, Io = 3.0A, 25
C
1.48
1.50
1.52
Vdc
Output Current
Io
Vin.Min to Vin.Max
0
6.0
Adc
Line Regulation
Vin.Min to Vin.Max, 50%
Io.Max
30
mV
Load Regulation
Vin.Nom, Io.Min to Io.Max
30
mV
Dynamic Regulation
Peak Deviation
Settling Time
50-100% Io.Max load step
change.
to 1% error band
150
1000
mV
s
Output Voltage Ripple
Vr
Vin.Min to Vin.Max, Io.Min to
Io Max, 20MHz Bandwidth
70
85
mVp-p
Admissible Load
Capacitance
Comax
Io.Max, Vin.Nom
2,200
F
Output Current Limit
Threshold
Icl
Vout =0.90 Vo.Nom
120
200
%Io.Max
Switching Frequency
Fs
Vin.Nom, Io.Max
220
kHz
Temperature
Coefficient
Tco
0.02
%Vo/
C
Trim Range
Vt
Io.Min to Io.Max, Vin.Min to
Vin.Max
1.35
1.65
Vo
RFS06ZA Characteristic curves
Output Voltage Vs Load
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
0.00
1.20
2.40
3.60
4.80
6.00
7.20
8.40
9.60
10.80
12.00
Iout (A)
Vout (V)
Vin Min
Vin Nom
Vin Max
Efficiency Vs Load
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
0.00
0.30
0.60
1.20
1.80
2.40
3.00
3.60
4.20
4.80
5.40
6.00
Iout (A)
Efficiency
Vin Min
Vin Nom
Vin Max
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 4 of 14
www.power-one.com
Output Specifications
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
RFS06ZB : 1.8V/6.0A
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Voltage
Setpoint Accuracy
Vo
Vin.Nom, Io = 3.0A, 25
C
1.78
1.80
1.82
Vdc
Output Current
Io
Vin.Min to Vin.Max
0
6.0
Adc
Line Regulation
Vin.Min to Vin.Max, 50%
Io.Max
36
mV
Load Regulation
Vin.Nom, Io.Min to Io.Max
36
mV
Dynamic Regulation
Peak Deviation
Settling Time
50-100% Io.Max load step
change.
to 1% error band
150
1000
mV
s
Output Voltage Ripple
Vr
Vin.Min to Vin.Max, Io.Min to
Io Max, 20MHz Bandwidth
70
85
mVp-p
Admissible Load
Capacitance
Comax
Io.Max, Vin.Nom
2,200
F
Output Current Limit
Threshold
Icl
Vout =0.90 Vo.Nom
120
200
%Io.Max
Switching Frequency
Fs
Vin.Nom, Io.Max
220
kHz
Temperature
Coefficient
Tco
0.02
%Vo/
C
Trim Range
Vt
Io.Min to Io.Max, Vin.Min to
Vin.Max
1.62
1.98
Vo
RFS06ZB Characteristic curves
Output Voltage Vs Load
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0.00
1.20
2.40
3.60
4.80
6.00
7.20
8.40
9.60
10.80
12.00
Iout (A)
Vout (V)
Vin Min
Vin Nom
Vin Max
Efficiency Vs Load
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
0.00
0.30
0.60
1.20
1.80
2.40
3.00
3.60
4.20
4.80
5.40
6.00
Iout (A)
Efficiency
Vin Min
Vin Nom
Vin Max
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 5 of 14
www.power-one.com
Output Specifications
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
RFS06ZD : 2.5V/6.0A
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Voltage
Setpoint Accuracy
Vo
Vin.Nom, Io = 3.0A, 25
C
2.47
2.5
2.53
Vdc
Output Current
Io
Vin.Min to Vin.Max
0
6.0
Adc
Line Regulation
Vin.Min to Vin.Max, 50%
Io.Max
50
mV
Load Regulation
Vin.Nom, Io.Min to Io.Max
50
mV
Dynamic Regulation
Peak Deviation
Settling Time
50-100% Io.Max load step
change.
to 1% error band
150
1000
mV
s
Output Voltage Ripple
Vr
Vin.Min to Vin.Max, Io.Min to
Io Max, 20MHz Bandwidth
75
100
mVp-p
Admissible Load
Capacitance
Comax
Io.Max, Vin.Nom
2,200
F
Output Current Limit
Threshold
Icl
Vout =0.90 Vo.Nom
120
200
%Io.Max
Switching Frequency
Fs
Vin.Nom, Io.Max
220
kHz
Temperature
Coefficient
Tco
0.02
%Vo/
C
Trim Range
Vt
Io.Min to Io.Max, Vin.Min to
Vin.Max
2.25
2.75
Vo
RFS06ZD Characteristic curves
Efficiency Vs Load
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
0.00
0.30
0.60
1.20
1.80
2.40
3.00
3.60
4.20
4.80
5.40
6.00
Iout (A)
Efficiency
Vin Min
Vin Nom
Vin Max
Output Voltage Vs Load
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0.00
0.90
1.80
2.70
3.60
4.50
5.40
6.30
7.20
8.10
9.00
9.90
10.80
11.70
Iout (A)
Vout (V)
Vin Min
Vin Nom
Vin Max
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 6 of 14
www.power-one.com
Output Specifications
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
RFS06ZE : 3.3V/6.0A
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Voltage
Setpoint Accuracy
Vo
Vin.Nom, Io = 3.0A, 25
C
3.26
3.3
3.34
Vdc
Output Current
Io
Vin.Min to Vin.Max
0
6.0
Adc
Line Regulation
Vin.Min to Vin.Max, 50%
Io.Max
65
mV
Load Regulation
Vin.Nom, Io.Min to Io.Max
65
mV
Dynamic Regulation
Peak Deviation
Settling Time
50-100% Io.Max load step
change.
to 1% error band
150
500
mV
s
Output Voltage Ripple
Vr
Vin.Min to Vin.Max, Io.Min to
Io Max, 20MHz Bandwidth
75
100
mVp-p
Admissible Load
Capacitance
Comax
Io.Max, Vin.Nom
2,200
F
Output Current Limit
Threshold
Icl
Vout =0.90 Vo.Nom
120
200
%Io.Max
Switching Frequency
Fs
Vin.Nom, Io.Max
220
kHz
Temperature
Coefficient
Tco
0.02
%Vo/
C
Trim Range
Vt
Io.Min to Io.Max, Vin.Min to
Vin.Max
2.97
3.63
Vo
RFS06ZE Characteristic curves
Output Voltage Vs Load
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
0.00
1.20
2.40
3.60
4.80
6.00
7.20
8.40
9.60
10.80
12.00
Iout (A)
Vout (V)
Vin Min
Vin Nom
Vin Max
Efficiency Vs Load
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.00
0.60
1.80
3.00
4.20
5.40
Iout (A)
Efficiency
Vin Min
Vin Nom
Vin Max
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 7 of 14
www.power-one.com
Output Specifications
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
RFS04ZG : 5.0V/4.0A
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Voltage
Setpoint Accuracy
Vo
Vin.Nom, Io = 2.0 A, 25
C
4.94
5.0
5.06
Vdc
Output Current
Io
Vin.Min to Vin.Max
0
4.0
Adc
Line Regulation
Vin.Min to Vin.Max, 50%
Io.Max
100
mV
Load Regulation
Vin.Nom, Io.Min to Io.Max
100
mV
Dynamic Regulation
Peak Deviation
Settling Time
50-100% Io.Max load step
change.
to 1% error band
250
500
mV
s
Output Voltage Ripple
Vr
Vin.Min to Vin.Max, Io.Min to
Io Max, 20MHz Bandwidth
50
75
mVp-p
Admissible Load
Capacitance
Comax
Io.Max, Vin.Nom
2,200
F
Output Current Limit
Threshold
Icl
Vout =0.90 Vo.Nom
120
200
%Io.Max
Switching Frequency
Fs
Vin.Nom, Io.Max
250
kHz
Temperature
Coefficient
Tco
0.02
%Vo/
C
Trim Range
Vt
Io.Min to Io.Max, Vin.Min to
Vin.Max
4.5
5.5
Vo
RFS04ZG Characteristic curves
Output Voltage Vs Load
0.00
1.00
2.00
3.00
4.00
5.00
6.00
0.00
0.60
1.20
1.80
2.40
3.00
3.60
4.20
4.80
5.40
6.00
6.60
7.20
7.80
Iout (A)
Vout (V)
Vin Min
Vin Nom
Vin Max
Efficiency Vs Load
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.00
0.20
0.40
0.80
1.20
1.60
2.00
2.40
2.80
3.20
3.60
4.00
Iout (A)
Efficiency
Vin Min
Vin Nom
Vin Max
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 8 of 14
www.power-one.com
Feature Specifications
All specifications apply over input voltage, output load and temperature range, unless otherwise noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Shutdown Control:
Converter OFF
Converter ON
Sink Current
Shutdown pin is pulled low
Voltage source or open circuit
Vin=Vin.Nom
-1.0
3.5
1.0
1.0
5.5
Vdc
Vdc
mAdc
Temperature Derating Curves
The derating curves below give an indication of the output power achievable with and without forced air
cooling. However in the final application, in order to ensure the reliability of the unit, care must be taken to
ensure the maximum case temperature is not exceeded under any conditions.
Output Power Vs Ambient Temp. and Airflow
0
20
40
60
80
100
120
0
10
20
30
40
50
60
70
80
90
100
110
Ambient Temp. (deg C)
Output Power (%)
200LFM (1 m/s)
0 LFM
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 9 of 14
www.power-one.com
Typical Application
This series of converters does not require any
external components for proper operation.
However, if the distribution of the input voltage to
the converter contains significant inductance, a
capacitor across the input terminals may be
required to stabilize the input voltage. A minimum
of 1F, quality electrolytic / ceramic capacitor is
recommended for this purpose.
For output decoupling it is recommend connecting
a 1F ceramic capacitor directly across the output
pins of the converter.
Shutdown Feature
The remote control pin functions as a normal soft
shutdown. It is referenced to the Vin pin. With
positive logic, when the remote control pin is pulled
low, the output is turned off and the unit goes into a
very low input power mode.
An open collector switch is recommended to control
the voltage between the remote control pin and the
-Vin pin of the converter. The remote control pin is
pulled up internally, so no external voltage source
is required. The user should avoid connecting a
resistor between the remote control pin and the
+Vin pin.
The user must take care to ensure that the pin
reference for the control is connected close to the -
Vin pin. The control signal must not be referenced
ahead of EMI filtering, or remotely from the unit. If
the remote control pin is not used, it can be left
floating.
Thermal Considerations
The converter is designed for natural or forced
convection cooling. The output power of the
converter is limited by the maximum case
temperature (Tc). To ensure reliable long term
operation of the converters, and to comply with
safety agency requirements, Power-One limits
maximum allowable case temperature (Tc) to
100C (see Mechanical Drawings).
Output Current Limiting
When the output is overloaded above the maximum
output current rating, the voltage will start to reduce
to maintain the output power to a safe level. In a
condition of high overload or short-circuit where the
output voltage is pulled below approximately 30%
of Vo.Nom, the unit will enter a `Hiccup' mode of
operation. Under this condition the unit will attempt
to restart, approximately every 25ms until the
overload has cleared.
Parallel Operation
Paralleling of two converters is not possible.
Output Voltage Trim
The trim feature allows the user to adjust the output
voltage from the nominal.
Output voltage can be adjusted by an external
resistor. To increase Vo a resistor should be
connected between pins 2 and 3. To decrease Vo a
resistor should be connected between pins 1 and 3.
To increase Vo:
Rext = (A (D x Vout)) / ( Vout Vout.Nom)
To reduce Vo:
Rext = ((B x Vout) - C) / ( Vout.Nom - Vout)
Where Vout is the desired output voltage
Model
A
B
C
D
RFS06ZA
1945
1470
1944
470
RFS06ZB
2590
1730
2560
750
RFS06ZD
5010
2516
5010
1500
RFS06ZE
7010
3161
7010
1500
RFS04ZG
11260
4532
11240
1500
Note:
When the output voltage is trimmed up, the output
power from the converter must not exceed its
maximum rating. This is determined by measuring
the voltage on the output pins, and multiplying it by
the output current.
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 10 of 14
www.power-one.com
Safety Considerations
These converters feature 1500 Volt DC isolation
from input to output. The input to output resistance
is greater than 10MOhm. These converters are
provided with Operational Insulation between input
and output circuits according to EN60950 / UL1950
/ CSA60950-00. 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 specific applications may have
additional requirements.
In order for the output of the converter to be
considered as SELV (Safety Extra Low Voltage) or
TNV-1, according to EN60950 / UL1950 /
CSA60950-00, one of the following requirements
must be met in the system design:
The converter has no internal fuse. An external
fuse must be provided to protect the system
from catastrophic failure. A fuse with a rating
not greater than 2.0A is recommended. The
user can select a lower rating fuse based upon
the inrush transient 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
value of the fuse without opening. The fuse
must not be placed in the grounded input line, if
any.
If the voltage source feeding the module is
SELV, the output of the converter is considered
SELV and may be grounded or ungrounded.
The circuitry of the converter may generate
transients, which exceed the input voltage.
Even if the input voltage is SELV (<60V) the
components on the primary side of the converter
may have to be considered as hazardous. A
safety interlock may be needed to prevent the
user from accessing the converter while
operational.
EMC Specifications
Conducted Noise:
The converters meet the requirements of level A
and level B of EN55022, CISPR22 and FCC CFR
title 47 Part 15 Sub-part J - Conducted (conducted
noise on the input terminals) using the following
circuit.
C1 = 18nF for RFS04ZG & RFS06ZE
C1 = 26nF for RFS06ZD, RFS06ZB & RFS06ZA
C2 = 2F to meet EN55022A
C2 = 7F to meet EN55022B
Electromagnetic Susceptibility:
Standard
Applied
Stress
Class
Level
Performance
Outcome *
Electrostatic
Discharge
EN61000-4-2
2KV to
pins
1
B
Electromagnetic
Field
EN61000-4-3
3V/m
2
A
Electrical Fast
Transient
EN61000-4-4
2000 Vp
to input
3
B
Conducted
Disturbances
EN61000-4-6
3Vrms to
input
2
B
* A denotes normal operation, no deviation from
specification. B denotes temporary deviation from
specification is possible.
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 11 of 14
www.power-one.com
Surface Mount Assembly
Soldering:
The following instructions must be observed when
soldering the unit. Failure to observe these
instructions may result in failure or significant
degradation of the module performance. Power-
One will not honor any warranty claims arising from
failure to observe these instructions.
This product is approved for forced convection
reflow soldering only.
The curves below define the maximum peak reflow
temperature permissible measured on Pins 1 and
10 of the converter.
The lead-frame is constructed from a high
temperature glass filled, UL94V0 flame retardant,
diallyl ortho-phthalate moulding compound
commonly used for packaging of electronics
components. It has passed NASA outgassing
tests and is certified to MIL-M-14. The coefficient
of thermal expansion is equivalent to FR4.
The gull wing leads are formed to ensure optimal
solder joint strength and structure. Furthermore
they facilitate visual inspection (manual or
automatic). The leads are formed from a 97% Cu
alloy plated with Cu and Sn 90. This material is
commonly used in the manufacture of integrated
circuits. It has good corrosion resistance and
exhibits the nobility inherent to all high copper
alloys. Unlike brasses, this material is essentially
immune to stress corrosion cracking. It also
exhibits excellent solderability. It is readily wetted
by solders and performs well in standard
solderability tests. (Dip of Class II or better).
The product is manufactured with a patented
process, which is fully automated, and `in-line'.
This ensures that there is no contamination or
mechanical stress on the lead-frame so that the co
planarity and solderability are maintained.
The product is shipped in JEDEC trays to
guarantee preservation of the co-planarity and
enable fully automated assembly in the final
application.
.
Pick & Place Assembly:
The product is designed with a large flat area in the
center of the top surface to serve as a pick up point
for automated vacuum pick and place equipment.
The `open board' construction of the unit ensures
that weight is kept to a minimum. However due to
the relatively large size of the component, a large
nozzle (> 4 .0mm, depending on vacuum pressure)
is recommended for picking and placing.
The unit may also be automatically handled using
`odd-form' placement equipment, with mechanical
grippers. For this type of equipment the end edges
of the device, which have no leads and also feature
the greatest dimensional accuracy, should be used
as pick-up points.
Restriction curve above 215C
Peak temp. at pins 1 and 10 (C)
200
205
210
215
220
225
230
235
240
245
10
20
30
40
50
60
tp (s)
Time (s)
0
50
100
150
200
250
300
0
40
80
120
160
200
240
280
320
360
400
440
Max. temp. on pins 1 and 10 during reflow
soldering (deg C)
tp
Peak Temperature
(See fig below)
190 450 s
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 12 of 14
www.power-one.com
Mechanical Drawings
Note:- mm[inches]
Tolerances: -
0.5-10 0.1
10-100 0.2
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 13 of 14
www.power-one.com
5 [0.197]
29.6 [1.165]
40 [1.575]
18 17 16 15 14 13 12 11 1
0
1 2 3 4 5 6 7 8 9
24 [0.945]
3.6 [0.142]
2.8 [0.11]
Recommended land pattern
JEDEC TRAY
Tray pickup point
Product Specifications
RFS Series: 20W / 6.0A DC/DC Converters
Oct 2001
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
18-Oct-01
Rev 1.0
Page 14 of 14
www.power-one.com
Pin-Out
Pin
Designation
Function
Reference
1
+Vout
Positive output voltage
Secondary
2
-Vout
Output voltage return
Secondary
3
Trim
Output voltage adjust
Secondary
4
NC
No connection
Secondary
5
NC
No connection
Primary
6
NC
No connection
Primary
7
NC
No connection
Primary
8
NC
No connection
Primary
9
NC
No connection
Primary
10
NC
No connection
Primary
11
Shutdown
Shutdown control. Pull low to turn unit off
Primary
12
NC
No connection
Primary
13
NC
No connection
Primary
14
NC
No connection
Primary
15
NC
No connection
Primary
16
NC
No connection
Primary
17
-Vin
Input voltage return
Primary
18
+Vin
Positive input voltage
Primary
Ordering Information
Options
Suffixes to add to part number
Surface Mount Version, shipped
in JEDEC Tray
Add Suffix "M6".
Through hole (leaded) version.
Consult factory for availability.
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 President of Power-One, Inc.
3. Specifications are subject to change without notice.
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