FEATURES
•
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 91%
•
2:1 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 LCD15 SERIES COMPATIBLE
•
CE MARK MEETS 2006/95/EC, 93/68/EEC AND 2004/108/EC
•
UL60950-1, EN60950-1 AND IEC60950-1 LICENSED
•
RoHS DIRECTIVE COMPLIANT
APPLICATIONS
Wireless Network
Telecom/Datacom
Industry Control System
Measurement Equipment
Semiconductor Equipment
OPTIONS
Positive logic Remote On/Off, Without trim, Without CTRL pin
DESCRIPTION
LCD20 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 2:1 wide input voltage of 9
~
18 VDC, 18
~
36VDC and
36
~
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
Voltage accuracy
Minimum load
Voltage adjustability (Note 5)
Line regulation
Single
Single
LL to HL at Full Load
Dual
Single
No Load to Full Load
Dual
Single
10% Load to 90% Load
Dual
Dual
All specifications are typical at nominal input, full load and 25ºC otherwise noted
INPUT SPECIFICATIONS
20 Watts
±1%
0%
±10%
± 0.2%
± 0.5%
± 0.2%
± 1.0%
± 0.1%
± 0.8%
± 5%
See table
9 ~ 18VDC
18 ~ 36VDC
36 ~ 75VDC
Input filter
Pi type
25VDC 1sec, max.
12VDC input
24VDC input
Input surge voltage
50VDC 1sec, max.
48VDC input
100VDC 1sec, max.
Input reflected ripple current Nominal input and full load
30mAp-p
Nominal input and
Power up
30ms, max.
Start up time
constant resistive load Remote ON/OFF
30ms, max.
12VDC input
9VDC, max.
24VDC input
18VDC, max.
Start-up voltage
48VDC input
36VDC, max.
12VDC input
8VDC
24VDC input
16VDC
Shutdown voltage
48VDC input
33VDC
Remote ON/OFF (Note 6)
DC-DC ON
Positive logic(Option)
Open or 3 V < Vr < 15V
DC-DC OFF
Short or 0V < Vr < 1.2V
Negative logic(Standard) DC-DC ON
Short or 0V < Vr < 1.2V
DC-DC OFF
Open or 3V < Vr < 15V
Input current of Remote control pin Nominal input
-0.5mA~1.0mA
Input voltage range
Remote off state input current
Nominal input
2.0mA
12VDC nominal input
24VDC nominal input
48VDC nominal input
Load regulation
Cross regulation
Asymmetrical load 25% / 100% FL
Ripple and noise 20MHz bandwidth
Temperature coefficient
(Measured with a 1µF M/C X7R and a 10µF T/C)
±0.02%
/ ºC, max.
Transient response recovery time 25% load step change
250µS
3.7VDC~5.4VDC
3.3VDC output
5VDC output
Over voltage protection
5.6VDC~7.0VDC
13.5VDC~19.6VDC
12VDC output
15VDC output
16.8VDC~-20.5VDC
Over load protection
% of FL at nominal input
150%
Short circuit protection
Hiccup, automatics recovery
ENVIRONMENTAL SPECIFICATIONS
Operating ambient temperature(Note 7)
Maximum case temperature
-40ºC ~ +60ºC (without derating)
+60ºC ~ +101ºC (with derating)
105ºC
-55ºC ~ +125ºC
17.6ºC/Watt
14.8ºC/Watt
MIL-STD-810F
MIL-STD-810F
5% to 95% RH
GENERAL SPECIFICATIONS
Efficiency
Isolation voltage
Isolation resistance
Isolation capacitance
Switching frequency
Approvals and standard
Case material
Base material
Potting material
Dimensions
Weight
MTBF (Note 1)
See table
Input to Output
1600VDC, min. 1minute
Input(Output) to Case 1000VDC, min. 1minute
10 ohms, min.
1500pF, max.
330KHz±10%
IEC60950-1, UL60950-1, EN60950-1
Nickel-coated copper
FR4 PCB
Silicon (UL94-V0)
1.0 X 1.0 X 0.39 Inch
(25.4 X 25.4 X 9.9mm)
15g(0.53oz)
1.766x10
6
hrs
BELLCORE TR-NWT-000332
MIL-HDBK-217F
5.530x10
5
hrs
9
Storage temperature range
Thermal impedance
Natural convection
Natural convection with Heat-sink
(Note 8)
Thermal shock
Vibration
Relative humidity
EMC CHARACTERISTICS
EMI (Note 9)
ESD
Radiated immunity
EN55022
EN61000-4-2
EN61000-4-3
EN61000-4-5
EN61000-4-6
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
Fast transient (Note 10) EN61000-4-4
Surge (Note 10)
Conducted immunity
Page 1 of 3 Issued Date：2011/12/30
Model
Number
LCD20-12S3P3
LCD20-12S05
LCD20-12S12
LCD20-12S15
LCD20-12D12
LCD20-12D15
LCD20-24S3P3
LCD20-24S05
LCD20-24S12
LCD20-24S15
LCD20-24D12
LCD20-24D15
LCD20-48S3P3
LCD20-48S05
LCD20-48S12
LCD20-48S15
LCD20-48D12
LCD20-48D15
Input
Range
9 ~ 18 VDC
9 ~ 18 VDC
9 ~ 18 VDC
9 ~ 18 VDC
9 ~ 18 VDC
9 ~ 18 VDC
18 ~ 36 VDC
18 ~ 36 VDC
18 ~ 36 VDC
18 ~ 36 VDC
18 ~ 36 VDC
18 ~ 36 VDC
36 ~ 75 VDC
36 ~ 75 VDC
36 ~ 75 VDC
36 ~ 75 VDC
36 ~ 75 VDC
36 ~ 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
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
0mA
0mA
0mA
0mA
0mA
0mA
Full Load
4500mA
4000mA
1670mA
1330mA
± 833mA
± 667mA
4500mA
4000mA
1670mA
1330mA
± 833mA
± 667mA
4500mA
4000mA
1670mA
1330mA
± 833mA
± 667mA
Output
No Load
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
75mVp-p
75mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
10mA
10mA
10mA
10mA
10mA
10mA
6mA
6mA
6mA
6mA
6mA
6mA
4mA
4mA
4mA
4mA
4mA
4mA
(3)
(2)
Eff
(%)
87
89
89
89
89
90
87
90
90
91
90
90
87
89
90
90
89
90
(3)
Capacitor
Load max
7000µF
5000µF
850µF
700µF
± 500µF
± 350µF
7000µF
5000µF
850µF
700µF
± 500µF
± 350µF
7000µF
5000µF
850µF
700µF
± 500µF
± 350µF
(4)
±
±
±
±
±
±
Note
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 CTRL 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.
1.
LCD20-48S05 Derating Curve
LCD20-48S05 Derating Curve With Heat-sink
LCD20-48S05 Efficiency VS Input Voltage
LCD20-48S05 Efficiency VS Output Current
Page 2 of 3 Issued Date：2011/12/30
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-
12xxx
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 /25V
1812 MLCC
LCD20-
24xxx
4.7µF /50V
1812 MLCC
N/A
N/A
470pF/2KV
1808 MLCC
LCD20-
48xxx
2.2µF/100V
1812 MLCC
2.2µF/100V
1812 MLCC
2.2µF/100V 1000pF/2KV
1812 MLCC 1808 MLCC
PIN CONNECTION
PIN
1
2
3
4
5
6
SINGLE
+INPUT
-INPUT
CTRL
+OUTPUT
TRIM
-OUTPUT
DUAL
+INPUT
-INPUT
CTRL
+OUTPUT
COMMON
-OUTPUT
L1
325µH
Common
Choke
PMT-050
325µH
Common
Choke
PMT-050
325µH
Common
Choke
PMT-050
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed by using
the method shown below.
Recommended EN55022 Class B Filter Circuit Layout
PRODUCT STANDARD TABLE
TRIM UP
TRIM DOWN
6
5
R
U
5
4
R
D
Option
Negative logic remote ON/OFF(Standard)
Positive logic remote ON/OFF
Without CTRL pin
Negative remote logic ON/OFF without TRIM pin
Without CTRL & TRIM pin
Positive remote logic ON/OFF without TRIM pin
Suffix
-A
-B
-C
-D
-E
Page 3 of 3 Issued Date：2011/12/30
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