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SLC100 Datasheet PDF - C&D Technologies

Part Number SLC100
Description 40 Amp SINGLE OUTPUT QUARTER BRICK DC / DC CONVERTER
Manufacturers C&D Technologies 
Logo C&D Technologies Logo 

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SLC100 datasheet, circuit
SLC100 1.2V
CorpoCraotrep:owrawtew:.cwdwtewc.hcndote.ccohmno.com
Product: www.cdpoweronline.com
40 Amp Single Output Quarter Brick DC/DC Converter
www.DataSheet4U.com
Industry Standard Footprint & Size -
2.28” x 1.45”
SMD Models with Position PerfectTM
Interconnects
High Efficiency
Isolation Voltage of 2000 VDC
Wide Input Voltage Range: 36 – 75VDC Fixed Frequency Operation
Series Output Voltage: 1.0V, 1.2V,
UL/CUL 60950 recognized (US & Canada),
1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5.0V & 12V
VDE EN60950, basic insulation rating
Output VoltageTrim Function
Meets TNV-SELV Isolation Requirements
Remote Sense for output
compensation
Remote ON/OFF control referenced to
input side (Positive or Negative Logic)
Meets Conducted Emissions
Requirements of FCC Class B and
EN55022 Class B with External Filter
No Heatsink Required
Output Current Limit
Thermal Shutdown
No Minimum Load Requirement
Input Undervoltage Lockout
ISO9001
CERTIFIED
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
MODEL
SLC100-2,11,20,29
NOMINAL
INPUT
VOLTAGE
(VDC)
48
RATED
OUTPUT
VOLTAGE
(VDC)
1.2
OUTPUT CURRENT
MIN RATED
LOAD(A)
OUTPUT (A)1
0.0 40
* Note 1: Maximum output current for SMD Models is 25A.
INPUT
CURRENT
AT RATED LOAD (A)
(48Vin)
1.30
EFFICIENCY
TYPICAL
(%)
80
Product: www.cdpoweronline.com
SLC100 1.2V Rev C 11/2004
1

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SLC100 equivalent
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,
www.DataSalhloeweint4gUfo.croammore 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
CL 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 (CB) 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
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.
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.
Figure 2 – Trim Up Circuit
Product: www.cdpoweronline.com
SLC100 1.2V Rev C 11/2004
5

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Information Total 10 Pages
Download[ SLC100.PDF Datasheet ]

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