FEATURES
APPLICATIONS
Wireless Network
Telecom/Datacom
Industry Control System
Measurement Equipment
Semiconductor Equipment
•
20 WATTS MAXIMUM OUTPUT POWER
•
ULTRA LOW QUIESCENT CURRENT
•
SINGLE OUTPUT UP TO 4.5A
•
SMALL SIZE AND LOW PROFILE：1.0 x 1.0 x 0.39 INCH
•
HIGH EFFICIENCY UP TO 90%
•
4:1 ULTRA WIDE INPUT VOLTAGE RANGE
•
SIX-SIDED CONTINUOUS SHIELD
•
MEET EN55022 CLASS A WITHOUT EXTERNAL COMPONENTS
•
FIXED SWITCHING FREQUENCY
•
INPUT TO OUTPUT ISOLATION:1600VDC
•
INDUSTRY STANDARD PIN-OUT LCD15W SERIES COMPATIBLE
•
CE MARK MEETS 2006/95/EC, 93/68/EEC AND 2004/108/EC
•
UL60950-1, EN60950-1 AND IEC60950-1 SAFETY APPROVALS PENDING
•
RoHS DIRECTIVE COMPLIANT
Positive logic Remote ON/OFF, Without trim pin, Without On/Off control pin
OPTIONS
DESCRIPTION
LCD20W DC/DC converters provide up to 20 watts of output power in an industry
standard package and footprint. These units are specifically designed to meet the
power needs of low profile. All models feature with 4:1 ultra wide input voltage of 9
~
36
VDC and 18
~
75VDC, comprehensively protected against over-current, over-voltage
and input under-voltage protection conditions, and trimmable output voltage.
T E C H N I C A L S P E C I F I C AT I O N
OUTPUT SPECIFICATIONS
Output power
All specifications are typical at nominal input, full load and 25ºC otherwise noted
INPUT SPECIFICATIONS
24VDC nominal input
9 ~ 36VDC
20 Watts Input voltage range
48VDC nominal input
18 ~ 75VDC
Voltage accuracy
±1%
Input filter
Pi type
Minimum load
0%
24VDC input
50VDC 1sec, max.
Input surge voltage
48VDC input
100VDC 1sec, max.
Voltage adjustability (Note 5)
Single
±10%
30mAp-p
± 0.2% Input reflected ripple current Nominal input and full load
Single
Line regulation
LL to HL at Full Load
± 0.5%
Dual
Nominal input and
Power up
30ms, max.
Start up time
constant resistive load Remote ON/OFF
30ms, max.
Single
± 0.2%
No Load to Full Load
24VDC input
9VDC, max.
± 1.0% Start-up voltage
Dual
Load regulation
48VDC input
18VDC, max.
Single
± 0.1%
10% Load to 90% Load
24VDC input
8VDC
± 0.8% Shutdown voltage
Dual
48VDC input
16VDC
Cross regulation Asymmetrical load 25% / 100% FL Dual
± 5% Remote ON/OFF (Note 6)
Open or 3 V < Vr < 15V
DC-DC ON
Positive logic(Option)
20MHz bandwidth
Ripple and noise
See table
(Measured with a 1μF M/C X7R and a 10μF T/C)
Short or 0V < Vr < 1.2V
DC-DC OFF
Short or 0V < Vr < 1.2V
±0.02%
/ ºC, max. Negative logic(Standard) DC-DC ON
Temperature coefficient
Open or 3V < Vr < 15V
DC-DC OFF
Transient response recovery time 25% load step change
250μS
Input current of Remote control pin Nominal input
-0.5mA~1.0mA
3.7VDC~5.4VDC
3.3VDC output
Nominal input
2.0mA
5.6VDC~7.0VDC Remote off state input current
5VDC output
Over voltage protection
13.5VDC~19.6VDC
ENVIRONMENTAL SPECIFICATIONS
12VDC output
16.8VDC~20.5VDC
15VDC output
-40ºC ~ +60ºC (without derating)
Over load protection
% of FL at nominal input
150% Operating ambient temperature(Note 7)
+60ºC ~ +101ºC(with derating)
Short circuit protection
Hiccup, automatics recovery Maximum case temperature
105ºC
GENERAL SPECIFICATIONS
Efficiency
Isolation voltage
Isolation resistance
Isolation capacitance
Switching frequency
Safety approvals pending
Case material
Base material
Potting material
Dimensions
Weight
MTBF (Note 1)
Storage temperature range
Natural convection
Natural convection with Heat-sink
-55ºC ~ +125ºC
17.6ºC/Watt
14.8ºC/Watt
MIL-STD-810F
MIL-STD-810F
5% to 95% RH
See table Thermal impedance
Input to Output
1600VDC, min. 1minute (Note 8)
Input(Output) to Case 1000VDC, min. 1minute Thermal shock
9
10 ohms, min. Vibration
1500pF, max.
330KHz±10%
IEC60950-1, UL60950-1, EN60950-1
Nickel-coated copper
Silicon (UL94-V0)
1.0 X 1.0 X 0.39 Inch
(25.4 X 25.4 X 9.9mm)
15g(0.53oz)
6
BELLCORE TR-NWT-000332
1.766x10 hrs
5
MIL-HDBK-217F
5.530x10 hrs
Relative humidity
EMC CHARACTERISTICS
EMI (Note 9)
EN55022
EN61000-4-2
EN61000-4-3
Air
Contact
±
8KV
±
6KV
10 V/m
±
2KV
±
2KV
10 Vr.m.s
Class B
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
FR4 PCB ESD
Radiated immunity
Fast transient (Note 10) EN61000-4-4
Surge (Note 10)
Conducted immunity
EN61000-4-5
EN61000-4-6
Page 1 of 3
Issued Date：2011/08/09
Model
Number
LCD20-24S3P3W
LCD20-24S05W
LCD20-24S12W
LCD20-24S15W
LCD20-24D12W
LCD20-24D15W
LCD20-48S3P3W
LCD20-48S05W
LCD20-48S12W
LCD20-48S15W
LCD20-48D12W
LCD20-48D15W
Input
Range
9 ~ 36 VDC
9 ~ 36 VDC
9 ~ 36 VDC
9 ~ 36 VDC
9 ~ 36 VDC
9 ~ 36 VDC
18 ~75 VDC
18 ~ 75 VDC
18 ~ 75 VDC
18 ~ 75 VDC
18 ~ 75 VDC
18 ~ 75 VDC
Output
Voltage
3.3 VDC
5 VDC
12 VDC
15 VDC
12 VDC
15 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
12 VDC
15 VDC
Output Current
Min. Load
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
Full Load
4500mA
4000mA
1670mA
1330mA
± 833mA
± 667mA
4500mA
4000mA
1670mA
1330mA
± 833mA
± 667mA
Output
(3)
No Load
(2)
Ripple & Noise Input Current
75mVp-p
75mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
75mVp-p
75mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
6mA
6mA
6mA
6mA
6mA
6mA
4mA
4mA
4mA
4mA
4mA
4mA
Eff
(3)
(%)
88
89
89
89
89
90
87
89
89
90
89
90
Capacitor
(4)
Load max
7000μF
5000μF
850μF
700μF
± 500μF
± 350μF
7000μF
5000μF
850μF
700μF
± 500μF
± 350μF
±
±
±
±
Note
1.
BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC.
MIL-HDBK-217F Notice2 @Ta=25 ºC, Full load (Ground, Benign, controlled environment)
2. Typical value at nominal input and no load.
3. Typical value at nominal input and full load.
4. Test by minimum input and constant resistive load.
5. Trimming allows the user to increase or decrease the output voltage set point of the module. This is accomplished by connecting an external resistor
between the TRIM pin and either the +OUTPUT pin or the -OUTPUT pin.
6. The ON/OFF pin voltage is reference to -INPUT.
The order number please see product standard table.
7. Test condition with vertical direction by natural convection (20LFM).
8. Heat-sink is optional and P/N:7G-0047C-F
9. EN55022
1) To meet Class A without external components.
2) To meet Class B please refer to the suggestion filter in next page.
10. An external input filter capacitor is required if the module has to meet EN61000-4-4, EN61000-4-5.
The filter capacitor Power Mate suggest: Nippon chemi-con KY series, 220μF/100V, ESR 48mΩ.
CAUTION:
This power module is not internally fused. An input line fuse must always be used.
LCD20-48S05W Derating Curve
LCD20-48S05W Derating Curve With Heat-sink
LCD20-48S05W Efficiency VS Input Voltage
LCD20-48S05W Efficiency VS Output Current
Page 2 of 3
Issued Date：2011/08/09
Mechanical Drawing:
Recommended EMI Filter:
Recommended Filter for Class B Compliance
The components used in the above figure, together with the
manufacturers’ part numbers for these components, are as follows:
C1
LCD20-
24xxxW
1. All dimensions in Inch (mm)
Tolerance: X.XX±0.02 (X.X±0.5)
X.XXX±0.01 (X.XX±0.25)
2. Pin pitch tolerance
±0.01(0.25)
3. Pin dimension tolerance
±0.004
(0.1)
C2
N/A
C3
N/A
C4& C5
470pF/2KV
1808 MLCC
4.7μF /50V
1812 MLCC
LCD20-
48xxxW
2.2μF /100V 2.2μF/100V 2.2μF /100V 1000pF/2KV
1812 MLCC 1812 MLCC 1812 MLCC 1808 MLCC
L1
325μH
Common
Choke
PMT-050
325μH
Common
Choke
PMT-050
PIN CONNECTION
PIN
1
2
3
4
5
6
SINGLE
+INPUT
-INPUT
ON/OFF
+OUTPUT
TRIM
-OUTPUT
DUAL
+INPUT
-INPUT
ON/OFF
+OUTPUT
COMMON
-OUTPUT
Recommended EN55022 Class B Filter Circuit Layout
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed by using
the method shown below.
TRIM UP
TRIM DOWN
PRODUCT STANDARD TABLE
Option
Negative logic remote ON/OFF(Standard)
Positive logic remote ON/OFF
without ON/OFF control pin
Negative remote logic ON/OFF without TRIM pin
without ON/OFF control &TRIM pin
Positive remote logic ON/OFF without TRIM pin
Suffix
-A
-B
-C
-D
-E
6
5
R
U
5
4
R
D
Page 3 of 3
Issued Date：2011/08/09
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