5 to 7.5 Watt FW Single Series DC/DC Converters
Features
Low noise outputs, 70 mV P-P maximum
Very low reflected ripple, 50 mA P-P maximum
Excellent regulation from no load to full load 0.2%
maximum
Excellent line regulation, 0.1% maximum
Efficiencies to 82%
Six-sided shielded low thermal gradient copper case
Five Year Warranty
Description
The low voltage FW single output converters are designed for
ultra wide input range, low noise industrial and instrument
applications requiring low input operating voltages. The wide
input range (3:1) is ideal for battery or unregulated input
applications.
These converters are state-of-the-art 100 kHz designs that
provide outstanding line and load regulation with efficiencies
approaching 82%.
The single outputs are regulated with a high loop gain
current mode control method that provides linear regulator
type performance with a true, high efficiency switching DC/DC
topology. The large amount of loop gain also insures excellent
input ripple rejection and line transient response.
All converters in this series are protected from output short
circuit, thermal overload and overvoltage transients on the
input and output.
Selection Chart
Model
12S5.1500FW
12S12.625FW
12S15.500FW
Input Range
VDC
MIN
MAX
9
9
9
27
27
27
Output
VDC
5
12
15
Output
mA
1500
625
500
7.5 Watt FW Single Series Block Diagram
ISOLATION TRANSFORMER
THERMAL SHUTDOWN
A
3 + OUTPUT
+ INPUT 1
5 CMN
CURRENT
MODE
PWM
- INPUT 2
BANDGAP REFERENCE
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
1
STCO#970521-2,
eco# 041007-1
5 to 7.5 Watt FW Single Series DC/DC Converters
Input Parameters*
Model
Voltage Range
Reflected Ripple (2)
Input Current Full Load
No Load
Efficiency
Switching Frequency
Maximum Input Overvoltage
100ms No Damage
Turn-on Time, 1% Output Error
Recommended Fuse
MIN
MAX
TYP
MAX
TYP
TYP
TYP
TYP
MAX
TYP
12S5.1500FW
12S12.625FW
9.0
27.0
23
50
775
14
81
100
48
10
(3)
12S15.500FW
Units
VDC
22
50
765
16
82
mA P-P
mA
%
kHz
VDC
ms
AMPS
25
50
815
12
77
Output Parameters*
Model
Output Voltage
Rated Current
Voltage Range
Load Regulation 0-100% Full Load
Line Regulation
Vin = Min-Max VDC
Short Term Stability (5)
Long Term Stability
Transient Response (6)
Dynamic Response (7)
Input Ripple Rejection (8)
Noise, 0-20MHz bw (2)
Temperature Coefficient
Overvoltage Clamp (9)
Short Circuit Protection to
Common for all Outputs
MIN
MAX
MIN
TYP
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
TYP
TYP
TYP
MAX
TYP
MAX
TYP
12S5.1500FW
5
0.0
1500
4.950
5.000
5.050
0.08
0.2
0.02
0.1
0.05
12S12.625FW
12S15.500FW
Units
12
15
VDC
0.0
0.0
mA
625
500
11.900
14.900
12.000
15.000
VDC
12.100
15.100
0.02
0.02
%
0.1
0.1
0.01
0.01
%
0.1
0.1
0.02
0.02
%/24Hrs
<0.2
%/kHrs
200
300
200
µs
mV peak
200
270
210
37
25
25
dB
35
mV P-P
70
50
ppm/°C
150
6.8
15
18
VDC
Provides minimum of 8 hours continous protection with current limiting and thermal
overload techniques
NOTES:
A
The input ripple rejection is specified for DC to 120 Hz ripple with
a modulation amplitude of 1% of Vin.
(9) For module protection only, see note 3.
(10) The functional temperature range is intended to give an additional
data point for use in evaluating this power supply. At the low
functional temperature the power supply will function with no
side effects, however, sustained operation at the high functional
temperature will reduce expected operational life. The data
sheet specifications are not guaranteed over the functional
temperature range.
(11) The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
(12) Water Washability - Calex DC/DC converters are designed to
withstand most solder/wash processes. Careful attention should
be used when assessing the applicability in your specific
manufacturing process. Converters are not hermetically sealed.
(8)
*
(2)
(3)
(4)
(5)
(6)
(7)
All Parameters measured at Tc=25°C, nominal input voltage
and full rated load unless otherwise noted. Refer to the
CALEX Application Notes for the definition of terms,
measurement circuits and other information.
Noise is measured per CALEX Application Notes. Measurement
bandwidth is 0-20 MHz.
Determine the correct fuse size by referring to CALEX Application
Notes.
Case is tied to Pin 5, - Output.
Short term stability is specified after a 30 minute warmup at full
load, constant line and recording the drift over a 24 hour period.
The transient response is specified as the time required to settle
from a 50 to 75 % step load change (rise time of step = 2 µSec)
to a 1% error band.
Dynamic response is the peak overshoot during a transient as
defined in note 6.
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
2
STCO#970521-2,
eco# 041007-1
5 to 7.5 Watt FW Single Series DC/DC Converters
General Specifications*
All Models
Isolation (4)
Breakdown Voltage
Input-Output
10µA Leakage
Input to Output
Capacitance
Environmental
Case Operating Range
No Derating
Units
MIN
TYP
700
340
-25
85
-40
95
-55
105
10
100
VDC
pF
MIN
MAX
MIN
Case Functional Range (10)
MAX
MIN
Storage Range
MAX
Thermal Impedance (11)
TYP
Thermal Shutdown
TYP
Case Temperature
General
TYP
°C
°C
°C
°C/Watt
°C
Unit Weight
Mounting Kits
1.7
MS15 & MS6
oz
Typical Performance (Tc=25°C, Vin=Nom VDC, Rated Load).
OUTPUT VOLTAGE Vs. OUTPUT LOAD
120
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.010 inches
X.XXX dimensions: ±0.005 inches
Seal around terminals is not hermetic. Do not immerse units in any
liquid.
Pin
1
2
3
5
Function
+INPUT
-INPUT
+OUTPUT
CMN
OUTPUT VOLTAGE (%)
100
80
60
40
20
0
0
20
40
60
80
100
120
140
160
OUTPUT LOAD (%)
EFFICIENCY Vs. LOAD (12V OUTPUT)
90
EFFICIENCY Vs. LINE INPUT (12V OUTPUT)
85
48S5.1500, 48S12.625 & 48S15.500
INPUT CURRENT Vs LINE INPUT VOLTAGE
0.35
50% FULL LOAD
INPUT CURRENT (AMPS)
LINE = 12VDC
0.30
0.25
0.20
0.15
0.10
0.05
EFFICIENCY (%)
80
LINE = 9VDC
EFFICIENCY (%)
100%
FULL LOAD
80
100% FULL LOAD
A
50%
FULL LOAD
0
10
20
30
40
50
60
70
80
70
LINE = 27VDC
60
0
10
20
30
40
50
60
70
80
90
100
75
9
11
13
15
17
19
21
23
25
27
0.00
LOAD (%)
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
OUTPUT VOLTAGE Vs CASE TEMPERATURE
0.10
OUTPUT IMPEDANCE Vs. FREQUENCY
10
DERATING
120
OUTPUT IMPEDANCE (OHMS)
NORMALIZED OUTPUT (%)
0.05
-0.00
-0.05
-0.10
-0.15
-0.20
-0.25
-0.30
-40
-20
0
20
40
60
80
100
15 VOLT OUTPUT
100
1
OUTPUT POWER (%)
NO HEAT
SINK
80
↓
INFINITE
HEAT
SINK
↑
SAFE
←
OPERATING
→
AREA
↓
60
.1
40
5 VOLT OUTPUT
20
.01
10
100
1000
10000
100000
1000000
0
-40
-20
0
20
40
60
80
100
CASE TEMPERATURE (Deg C)
FREQUENCY (Hz)
AMBIENT TEMPERATURE (Deg C)
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
3
STCO#970521-2,
eco# 041007-1
5 to 7.5 Watt FW Single Series DC/DC Converters
Features
Improved Second Source Benefits:
Description
These single output converters are designed for low noise,
telecommunications, industrial and instrument applications.
Their wide input range (2:1) makes them ideal for battery or
unregulated input applications.
These converters are state-of-the-art 120 KHz MOSFET
based designs that provide outstanding line and load regulation
with efficiencies approaching 85%.
The outputs are regulated by a high loop gain current mode
control method that provides linear regulator type performance
with a true, high efficiency switching DC/DC topology. The
large amount of loop gain also insures excellent input ripple
rejection and line transient response.
The FW Single converters are protected from output shorts
to common by a high speed, pulse-by-pulse, digital, current
limit circuit.
The input and output are overvoltage protected with transient
suppressor diodes. UL recognition under specification numbers
1459 and 1012 is currently pending.
Low noise outputs, 50 mV p-p maximum
Very low reflected ripple, 15 mA p-p maximum
Excellent regulation, 0.3% maximum
Improved line regulation, 0.1% maximum
Efficiencies to 84%
Reverse voltage protected input
Five Year Warranty
Selection Chart
Model
48S5.1000FW *
48S5.1500FW *
48S12.625FW *
48S15.500FW *
Input Range
VDC
MIN
20
36
36
36
MAX
60
72
72
72
Output
VDC
5
5
12
15
Output
mA
1000
1500
625
500
* These units are Recognized to UL 1459-2
5 - 7.5 Watt FW Single Series Block Diagram
SHIELDED
ISOLATION TRANSFORMER
A
PROTECTION
DIODE
+ INPUT 1
CURRENT
MODE
PWM
C1
C2
D1
3 + OUTPUT
5 CMN
- INPUT 2
Output
C1
C2
D1
5
12
15
68µF
10µF
10µF
78µF
20µF
20µF
6.8V
15V
18V
SIX-SIDED SHIELDED
COPPER CASE
BANDGAP REFERENCE
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
4
STCO#970521-2,
eco# 041007-1
5 to 7.5 Watt FW Single Series DC/DC Converters
Input Parameters*
Model
Voltage Range
Reflected Ripple (2), 0-20MHz bw
Input Current Full Load
No Load
Efficiency
Switching Frequency
Maximum Input Overvoltage
100ms No Damage
Turn-on Time, 1% Output Error
Recommended Fuse
Reverse Polarity
MIN
MAX
TYP
MAX
TYP
TYP
TYP
TYP
MAX
TYP
48S5.1000FW
20.0
60.0
48S5.1500FW
(13)
36.0
72.0
48S12.625FW
(13)
36.0
72.0
4
15
139
5
75
195
3
80
120
80
10
(3)
70
VDC
190
4
82
185
4
85
48S15.500FW
(13)
36.0
72.0
Units
VDC
mA P-P
mA
%
kHz
VDC
ms
Output Parameters*
Model
Output Voltage
Rated Current(4)
Voltage Range
100% Load
Load Regulation 0-100%
Line Regulation
Vin = Min-Max VDC
Short Term Stability (5)
Long Term Stability
Transient Response (6)
Dynamic Response (7)
Input Ripple Rejection (8)
Noise, 0-20MHz bw (2)
with 0.1µF External Capacitor
with no External Capacitor
Temperature Coefficient
Overvoltage Clamp (9)
Short Circuit Protection to
Common for all Outputs
MIN
MAX
MIN
TYP
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
TYP
TYP
TYP
MAX
TYP
MAX
TYP
MAX
TYP
48S5.1000FW
5
0.0
1000
4.950
5.000
5.050
0.1
0.3
0.01
0.1
0.05
0.05
< 0.2
50
100
125
180
38
10
50
40
100
50
150
200
200
150
170
0.02
0.02
48S5.1500FW
5
0.0
1500
4.950
5.000
5.050
48S12.625FW
12
0.0
625
11.900
12.000
12.100
0.05
0.1
48S15.500FW
15
0.0
500
14.900
15.000
15.100
Units
VDC
mA
VDC
%
%
%/24Hrs
%/kHrs
µs
mV peak
dB
mV P-P
ppm/°C
6.8
6.8
15
18
VDC
Provides minimum of 8 hours continous protection with current limiting and thermal
overload techniques
A
NOTES:
measured at
nominal input
*
All parametersrated load unlessTc=25 °C, noted. Refer to
voltage and full
otherwise
the CALEX Application Notes for the definition of terms,
measurement circuits and other information.
(2) Noise is measured per CALEX Application Notes. The output
noise is measured with a 0.1µF, 50V, ceramic capacitor connected
directly across the output pins. Measurement bandwidth is 0-20
MHz.
(3) Determine the correct fuse size by calculating the maximum DC
current drain at low line input, maximum load and then adding 20
to 25% to get the desired fuse size. A slow blow type fuse
is recommended.
(4) No minimum load required.
(5) Short term stability is specified after a 30 minute warm-up at full
load, constant line and recording the drift over a 24 hour period.
(6) The transient response is specified as the time required to settle
from a 50 to 75 % step load change (rise time of step = 2µ Sec)
to a 1% error band.
(7)
(8)
(9)
(10)
(11)
(12)
(13)
Dynamic response is the peak overshoot during a transient
as defined in note 6 above.
The input ripple rejection is specified for DC to 120 Hz ripple with
a modulation amplitude of 1% of Vin.
For module protection only, see also note 3.
Case is tied to Pin 5, CMN.
The functional temperature range is intended to give an additional
data point for use in evaluating this power supply. At the
low functional temperature the power supply will function with no
side effects, however sustained operation at the high functional
temperature will reduce expected operational life. The data
sheet specifications are not guaranteed over the functional
temperature range.
The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
These products are UL Recognized for an input voltage range of
36 to 60 VDC.
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
5
STCO#970521-2,
eco# 041007-1
嵌入式系统
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