Corporate: www.cdtechno.com
Corporate: www.cdtechno.com
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SLC100
1.2V
●
Industry Standard Footprint & Size -
2.28” x 1.45”
●
High Efficiency
●
Series Output Voltage: 1.0V, 1.2V,
1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5.0V & 12V
●
Output VoltageTrim Function
●
Remote Sense for output
compensation
●
Remote ON/OFF control referenced to
input side (Positive or Negative Logic)
●
Output Current Limit
●
No Minimum Load Requirement
●
SMD Models with Position Perfect
TM
Interconnects
●
Isolation Voltage of 2000 VDC
●
UL/CUL 60950 recognized (US & Canada),
VDE EN60950,
basic insulation rating
●
Meets TNV-SELV Isolation Requirements
●
Meets Conducted Emissions
Requirements of FCC Class B and
EN55022 Class B with External Filter
●
No Heatsink Required
●
Thermal Shutdown
●
Input Undervoltage Lockout
ISO9001
CERTIFIED
40 Amp Single Output Quarter Brick DC/DC Converter
●
Wide Input Voltage Range: 36 – 75VDC
●
Fixed Frequency Operation
The SLC100 Series is a 40 Amp single
output, low-profile DC-DC converter
in an industry standard package of
2.28” x 1.45” x 0.40”. The SLC100
uses unique proprietary technologies
to deliver ultra-high efficiencies and
excellent thermal performance. It includes
extensive control and protection features
for maximum flexibility and satisfies the
power requirements for a whole range of
applications with its input voltage range of
36-75 VDC and output voltages between
1.0VDC and 12.0VDC
The power dissipation of the SLC100
series is so low that a heat sink is not
required. Thermal derating curves are
provided indicating maximum allowable
output current versus airflow and ambient
temperature. The product features fast
dynamic response characteristics and
low output ripple critical for low voltage
applications. SLC DC-DC converter
modules are certified to UL/CUL 60950,
and VDE EN60950. It meets CISPR22/
EN55022/FCC15J Class B specs for EMI
levels with external filtering.
This high quality and highly reliable
product is competitively priced and an
ideal solution for distributed power,
telecoms and datacom applications.
PRODUCT SELECTION CHART
NOMINAL
INPUT
MODEL
SLC100-2,11,20,29
VOLTAGE
(V
DC
)
48
RATED
OUTPUT
VOLTAGE
(V
DC
)
1.2
OUTPUT CURRENT
MIN
LOAD(A)
0.0
RATED
OUTPUT (A)
1
40
INPUT
CURRENT
AT RATED LOAD (A)
(48Vin)
1.30
EFFICIENCY
TYPICAL
(%)
80
* Note 1: Maximum output current for SMD Models is 25A.
Product: www.cdpoweronline.com
SLC100 1.2V Rev C 11/2004
1
ABSOLUTE MAXIMUM RATINGS, ALL MODELS
PARAMETER
Input Voltage-Operating
Input Voltage-Operating
Operating Ambient Temperature
Storage Temperature
Output Short Circuit Duration
Lead Temperature (Soldering, 10 sec max)
CONDITIONS
Continuous
Transient (100 mS)
MIN
TYP
MAX
75
100
UNITS
V
DC
V
DC
°C
°C
°C
-40
-40
Continuous
85
+125
+300
COMMON ELECTRICAL SPECIFICATIONS, ALL MODELS
Specifications are at T
A
= +25°C, Airflow = 300LFM (1.5m/s) at nominal input voltage unless otherwise specified.
PARAMETER
INPUT
Voltage Range
ISOLATION
Input/Output Isolation Voltage
Capacitance
Resistance
Input to Output
Input to Output
10
2000
2000
V
DC
pF
MΩ
36
48
75
V
DC
CONDITIONS
MIN
TYP
MAX
UNITS
COMMON ELECTRICAL SPECIFICATIONS
FEATURES
Turn On Time
Remote Sense Compensation
Output Voltage Trim Range
Output Over Voltage Protection
Over Temperature Shutdown
Shutdown
Turn On
Input Under Voltage Protection
Turn Off
Turn On
Lockout Hysteresis Voltage
ON/OFF Logic Function
Logic Low Ion/off
Logic Low Von/off
Logic High Ion/off
Logic High Von/off
GENERAL
Switching Frequency
MTTF (per Telcordia TR-332)
1,497,000
200
KHz
Hrs
360
0.4
1.0
Open
Collector
μA
V
DC
μA
30.70
33.30
1.30
32.00
34.50
2.50
V
DC
V
DC
V
DC
Internal Monitor Point
Internal Monitor Point
135
125
°C
°C
-10
+120
Output to within 1% of Vnom
5.00
5
+10
+140
mS
% of V
NOM
% of V
NOM
% of V
NOM
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SLC100 1.2V Rev C 11/2004
2
MECHANICAL (THROUGH HOLE)
.400
[10.16]
2x, Ø080 [2.03]
.197 [5.00]
6x, Ø.060 [1.52]
.052
[1.32]
6x, Ø.040 [1.02]
.037
[0.94]
2x, Ø.060 [1.52]
PIN FUNCTIONS
1
2
3
4
5
6
7
8
+Vin
Remote On/Off
-Vin
-Vout
- Sense
Trim
+ Sense
+Vout
1.450
[36.83]
1.025
[26.04]
.725
[18.42]
.425
[10.80]
3
4
5
1.025 [26.04]
.875 [22.23]
.725 [18.42]
.575 [14.61]
.425 [10.80]
NOTES:
General Tolerance:
±
.015
Pin Locations/Diameters:
±
.005
Dimensions are in inches
[Millimeters]
Pin material: Copper
Pin Finish: Matte Tin over Nickel
Converter weight: [30.8g]
2
6
7
1
8
UL/TUV Standards require a clearance
greater than 0.04” between input and
output for Basic insulation. This should be
considered if copper traces are used on
the top side of the board under the con-
verter unit. Ferrite cores are considered
part of the input/primary circuit.
.000 [0.00]
.140 [3.56]
2.140 [54.36]
.000 [0.00]
BOTTOM VIEW
(PIN SIDE)
MECHANICAL (SMT)
.400
[10.16]
2.280 [57.91]
Interconnect FUNCTIONS
1
2
3
4
5
6
7
8
+Vin
Remote On/Off
-Vin
-Vout
- Sense
Trim
+ Sense
+Vout
6x, Ø.060 [1.52]
.052
[1.32]
.037
[0.94]
2x, Ø.080 [2.03]
1.450
[36.83]
1.025
[26.04]
.725
[18.42]
.425
[10.80]
3
4
5
1.025 [26.04]
.875 [22.23]
.725 [18.42]
.575 [14.61]
.425 [10.80]
NOTES:
General Tolerance:
±
.015
Interconnect Locations/
Diameters:
±
.005
Dimensions are in inches
[Millimeters]
Pin material: Copper
Pin Finish: Matte Tin over Nickel
Converter weight: [30.8g]
2
6
7
1
8
UL/TUV Standards require a clearance
greater than 0.04” between input and
output for Basic insulation. This should be
considered if copper traces are used on
the top side of the board under the con-
verter unit. Ferrite cores are considered
part of the input/primary circuit.
.000 [0.00]
* Interconnect co-planarity within 0.004”
.140 [3.56]
2.140 [54.36]
.000 [0.00]
BOTTOM VIEW
(PIN SIDE)
Product: www.cdpoweronline.com
2.280 [57.91]
SLC100 1.2V Rev C 11/2004
3
ORDERING INFORMATION
MODEL NUMBER
SLC100 - 1
SLC100 - 2
SLC100 - 3
SLC100 - 4
SLC100 - 5
SLC100 - 6
SLC100 - 7
SLC100 - 8
SLC100 - 9
SLC100 - 10
SLC100 - 11
SLC100 - 12
SLC100 - 13
SLC100 - 14
SLC100 - 15
SLC100 - 16
SLC100 - 17
SLC100 - 18
Vout (Vdc)
1.0
1.2
1.5
1.8
2.0
2.5
3.3
5.0
12.0
1.0
1.2
1.5
1.8
2.0
2.5
3.3
5.0
12.0
PINOUT
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
LOGIC
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
MODEL NUMBER
SLC100 - 19
SLC100 - 20
SLC100 - 21
SLC100 - 22
SLC100 - 23
SLC100 - 24
SLC100 - 25
SLC100 - 26
SLC100 - 27
SLC100 - 28
SLC100 - 29
SLC100 - 30
SLC100 - 31
SLC100 - 32
SLC100 - 33
SLC100 - 34
SLC100 - 35
SLC100 - 36
Vout (Vdc)
1.0
1.2
1.5
1.8
2.0
2.5
3.3
5.0
12.0
1.0
1.2
1.5
1.8
2.0
2.5
3.3
5.0
12.0
PINOUT
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
Through Hole
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
LOGIC
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
Negative
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SLC100 1.2V Rev C 11/2004
4
APPLICATION NOTES
Operation
Remote Sense
The remote sense feature of the SLC100 can be used
to compensate for voltage drops in the output power
lines by sensing output voltage directly at the point of
load. To enable this feature, connect the +Sense and
–Sense pins to the +Vout and –Vout pins, respective-
ly, at the point in the circuit where the tightest regula-
tion is required (Figure
1).
The sense leads conduct
very little current compared with the power leads and
therefore provide a more accurate indication of load
voltage for regulation purposes. This enables the
converter to increase (or decrease) its output volt-
age to compensate for any load distribution losses,
allowing for a more precise load voltage. Refer to the
product data sheet for the maximum output voltage
compensation range of the sense function.
When using remote sense with dynamic loads, the
transient response at the point of load may be limited
by the inductance present in the power lines. Severe
load steps may require the addition of a capacitor
C
L
across the output lines. When the load demands
an immediate increase in load current, this capacitor
helps to supply a portion of the current and reduces
the burden on the converter.
When the load is physically distanced from the con-
verter, the inductance of the power leads, and any by-
pass conductance at the load, can result in increased
phase shift in the converter’s feedback loop, causing
instability. This situation can be eliminated by insert-
ing bypass capacitors (C
B
) from the outputs to the
sense leads directly at the output pins. These capaci-
tors de-couple any AC on the power lines and assure
that only the DC voltage is sensed.
If remote sensing is not desired then +Sense and
-Sense must be tied to their respective outputs
for proper operation.
•
•
Output Voltage Trim
Figure 1 – Remote Sensing Circuit
The SLC100’s output voltage may be adjusted high
or low by an amount indicated on the product data
sheet. As shown in
Figure 2,
to raise the converter’s
output voltage a resistor must be placed between the
Trim pin and +Vout pin.
In general, the line resistance, or load drop, between
the output pins of the converter and load should be
minimized. Using remote sense, a large line resis-
tance, with a regulated load voltage, will result in
a higher output voltage at the output of the DC/DC
Converter. To prevent exceeding the converter’s
output power limits, a higher output voltage will
require a reduction in the maximum allowable output
current in accordance with the voltage/current power
relationship. To minimize the line resistance between
the converter and the load, the converter should be
placed as close to the load as possible. Line resis-
tance can further be decreased by using heavy gauge
wire or by increasing the cross sectional area of the
PC board traces.
Figure 2 – Trim Up Circuit
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SLC100 1.2V Rev C 11/2004
5
