LH 20-25 series -----a compact size power converter offered by Mornsun. It features universal input voltage, taking both DC and AC input
voltage, low power consumption, high efficiency, high reliability, safer isolation. It offers good EMC performance, which meet
IEC/EN61000-4, CISPR22/EN55022, UL60950 and EN60950 standards, and it’s widely used in industrial, office and civil applications. For harsh
EMC environment, the application circuit in the datasheet is strongly recommended.
CB
RoHS
Selection Guide
Certification
Part No.*
LH20-10B03
LH20-10B05
UL/CE/CB
LH20-10B09
LH20-10B12
LH20-10B15
LH20-10B24
LH20-10A05
LH20-10A12
LH20-10A15
LH20-10C0505-05
--
LH20-10C0512-04
LH20-10C0515-03
LH20-10C0524-02
LH20-10D0512-06
LH20-10D0515-05
LH20-10D0524-03
LH25-10B03
LH25-10B05
LH25-10B09
UL/CE/CB
LH25-10B12
LH25-10B15
LH25-10B24
LH25-10B48
25W
13.53W
20.5W
Output Power
13.53W
17.5W
Nominal Output Voltage and
Current
(Vo1/Io1)
3.3V/4100mA
5V/3500mA
9V/2100mA
12V/1600mA
15V/1300mA
24V/850mA
+5V/2000mA
+12V/830mA
+15V/650mA
5V/2500mA
5V/2000mA
5V/2000mA
5V/2000mA
5V/2500mA
5V/2500mA
5V/2500mA
3.3V/4100mA
5V/4100mA
9V/2500mA
12V/2100mA
15V/1600mA
24V/1100mA
48V/500mA
(Vo2/Io2)
--
--
--
--
--
--
-5V/2000mA
-12V/830mA
-15V/650mA
±5V/500mA
±12V/400mA
±15V/300mA
±24V/200mA
12V/600mA
15V/500mA
24V/300mA
--
--
--
--
--
--
--
Efficiency
(230VAC, %/Typ.)
74
78
80
82
83
85
75
82
83
74
75
76
77
75
76
77
74
79
81
83
84
85
87
Max. Capacitive
Load(µF)
Vo1
48000
12240
7200
5400
2720
1840
8000
960
880
11200
16000
13520
11200
32400
28000
28000
48000
12240
5600
5400
2400
1440
500
Vo2
--
--
--
--
--
--
8000
960
880
4480
1600
370
370
3250
1980
720
--
--
--
--
--
--
--
20W
Note: *About LH20-10AXX, use both positive and negative output as sampling feedback; and all others use Vo1 as sampling feedback.
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
AC/DC Converter
LH20(25) Series
Input Specifications
Item
Input Voltage Range
Input frequency
Input current
Inrush current
Leakage current
Recommended External Input
Fuse(Special package series include fuse)
Hot Plug
115VAC
230VAC
115VAC
230VAC
Operating Conditions
AC input
DC input
Min.
85
100
47
--
--
--
--
Typ.
--
--
--
--
--
16
30
Max.
264
370
63
0.6
0.34
--
--
A
Unit
VAC
VDC
Hz
0.3mA RMS typ./230VAC/50Hz
3.15A/250V, slow fusing
Unavailable
Output Specifications
Item
Output Voltage Accuracy
Line Regulation
Operating Conditions
Main circuit
Full load
Main circuit
Auxiliary circuit
Single output
Dual output(balanced load)
Load Regulation
10%-100%
load
Isolated triple output
(balanced load)
Isolated and separated twin
output (balanced load)
Ripple & Noise*
Temperature Coefficient
Short Circuit Protection
Over-current Protection
3.3 / 5VDC Output
9VDC Output
Over-voltage Protection
Main circuit
12 /15VDC Output
24VDC Output
48VDC Output
Single output models
Min. Load
Dual output models (balanced load)
Isolated and separated twin output (balanced load)
Isolated triple output (balanced load)
Hold-up Time
115VAC input
230VAC input
0
10
10
10
--
--
--
--
--
--
15
80
20MHz bandwidth (peak-peak value)
Main circuit
Main circuit
Auxiliary circuit
Main circuit
Auxiliary circuit
Min.
--
--
--
--
--
--
--
--
--
--
--
Typ.
±2
±0.5
±1.5
±1
±2
±3
±5
±3
±5
50
±0.02
Max.
--
--
--
--
--
--
--
--
--
100
--
mV
%/°C
%
Unit
Continuous, self-recovery
≥110%Io
self-recovery
≤7.5VDC
≤13VDC
≤20VDC
≤30VDC
≤60VDC
--
--
--
--
--
--
ms
%
Note: * Ripple and noise are measured by “parallel cable” method, please see AC-DC Converter Application Notes for specific operation.
General Specifications
Item
Isolation Voltage
Input-output
Operating Conditions
Test time: 1min
LH20-10A/C/D series
LH20(25)-10B series
LH20-10A/C/D series
LH20(25)-10B series
Min.
3000
-25
-40
-25
-40
--
Typ.
--
--
--
--
--
--
Max.
--
+70
+70
+85
+85
95
%RH
°C
Unit
VAC
Operating Temperature
Storage Temperature
Storage Humidity
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
AC/DC Converter
LH20(25) Series
Welding Temperature
Switching Frequency
-25℃~-10℃(LH20-10A/C/D Series)
Power Derating
-40℃~-10℃(LH20(25)-10B Series)
+50℃~+70℃(LH25-10B Series)
+55℃~+70℃ (LH20-10A/B/C/D Series)
Safety Standard
Safety Certification
Safety Class
MTBF
MIL-HDBK-217F@25°C > 300,000 h
Wave-soldering
Manual-welding
--
2.0
2.0
3.0
4.0
260±5℃; time:5~10s
360±10℃; time:3~5s
65
--
--
--
--
--
--
--
--
--
kHz
IEC60950/EN60950/UL60950
IEC60950/EN60950/UL60950
CLASS I
Physical Specifications
Casing Material
Horizontal packageg
Dimension
A2 chassis mounting
A3 chassis mounting
A4 Din-Rail mountin
Weight
Horizontal package/A2 chassis mounting/
A3 chassis mounting/A4 Din-Rail mounting
Black flame-retardant and heat-resistant plastic (UL94-V0)
70.00x48.00x23.50mm
96.10x54.00x32.00mm
99.00x54.00x32.00mm
96.10x54.00x36.60mm
120g/170g /170g /210g (Typ.)
Free convection
Cooling method
EMC Specifications
EMI
CE
RE
ESD
RS
EMS
EFT
Surge
CS
EMS
PFM
Immunities of voltage dip,
drop and short interruption
CISPR22/EN55022, CLASS B
CISPR22/EN55022, CLASS B
IEC/EN61000-4-2
IEC/EN61000-4-3
IEC/EN61000-4-4
IEC/EN61000-4-4
IEC/EN61000-4-5
IEC/EN61000-4-5
IEC/EN61000-4-6
IEC/EN61000-4-8
IEC/EN61000-4-11
±6KV/±8KV
10V/m
±2KV
±4KV (See Fig. 5 for recommended circuit)
±1KV/±2KV
±2KV/4KV (See Fig. 5 for recommended circuit)
10 Vr.m.s
10A/m
0%-70%
Perf. Criteria B
perf. Criteria A
perf. Criteria B
perf. Criteria B
perf. Criteria B
perf. Criteria B
perf. Criteria A
perf. Criteria A
perf. Criteria B
Product Characteristic Curve
Outpu t Power Percentage(%)
Output Power Percent age(%)
Te mperature Der ating C ur ve
10 0
70
40
20
LH20(25)-10B s eries
L H 20-10A/C/D s eries
Input voltage: 85~264VAC
100~370VDC
LH20-10A/B/C/D se rie s
L H 25-10B s eries
Input Voltage Derating Cur ve
100
80
75
60
40
20
85
100
100
120
240
340
In pu t Voltage
264 VAC
370 VDC
Ambient temperatu re: 25
℃
-4 0-2 5 -1 0
Ambi ent Temper atur e(
℃
)
50 55
70
Note:
①When
input 85~100VAC/240~264VAC/100~120VDC/340~370VDC, it need to be voltage derated on basis of temperature derating;
②This
product is suitable for use in natural air cooling environments, if in a closed environment, please contact our company’s FAE.
2015.08.24-B/3
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
AC/DC Converter
LH20(25) Series
Design Reference
1. Typical application circuit
A C(L)
F US E
MO V
NTC
AC(L)
A C(N)
+Vo
C1
C2
TV S
RL
F US E
A C(L)
NTC
A C(L)
+Vo
C 1 C 2 TV S1
RL
AC DC
MO V
A C(N )
A C(N )
AC DC
A C(N)
C om
- Vo
- Vo
C3
C 4 TV S2
RL
Fig. 1: LH20(25)-10B series (Single Output)Typical application circuit
Fig. 2: LH20-10A series (Dual Output) typical application circuit
AC(L)
F USE
M OV
NTC
AC(L)
+
C1
C 2 TV S1
RL
Vo1
-
ACDC
+
Vo2
-
C3
C 4
TV S2
RL
AC(L)
F USE
MO V
NTC
AC(L)
+
Vo1
-
C1
C 2 TV S1
RL
ACDC
A C(N)
AC(N)
A C(N)
AC(N)
+Vo2
C3
C 4
TV S2
RL
C om
-Vo2
C5
C 6
TV S3
RL
Fig. 3: LH20-10D series (Isolate Twin Output) typical application circuit
Model
LH20-10B03
LH20-10B05
LH20-10B09
LH20-10B12
LH20-10B15
LH20-10B24
LH20-10A05
LH20-10A12
LH20-10A15
LH20-10C0505-05
LH20-10C0512-04
LH20-10C0515-03
LH20-10C0524-02
LH20-10D0512-06
LH20-10D0515-05
LH20-10D0524-03
LH25-10B03
LH25-10B05
LH25-10B09
LH25-10B12
LH25-10B15
LH25-10B24
LH25-10B48
C2(µF)
330
330
220
220
220
220
470
120
68
330
330
330
330
330
330
330
330
330
330
330
330
120
68
C4(µF)
Fig. 4: LH20-10C series (Triple Output) typical application circuit
TVS1
SMBJ7.0A
SMBJ7.0A
SMBJ12A
SMBJ20A
SMBJ20A
SMBJ30A
SMBJ7.0A
SMBJ20A
SMBJ20A
SMBJ7.0A
SMBJ7.0A
SMBJ7.0A
SMBJ7.0A
SMBJ7.0A
SMBJ7.0A
SMBJ7.0A
SMBJ7.0A
SMBJ7.0A
SMBJ12A
SMBJ20A
SMBJ20A
SMBJ30A
SMBJ64A
TVS2
TVS3
C6(µF)
470
120
68
120
120
120
47
220
220
120
120
120
120
47
SMBJ7.0A
SMBJ20A
SMBJ20A
SMBJ7.0A
SMBJ20A
SMBJ20A
SMBJ30A
SMBJ20A
SMBJ20A
SMBJ30A
SMBJ7.0A
SMBJ20A
SMBJ20A
SMBJ30A
Note:
Note: Output filtering capacitors C2, C4, C6 are electrolytic capacitors, it is recommended to use high frequency and low impedance electrolytic capacitor.
For capacitance and current of capacitor please refer to manufacture’s datasheet. Capacitor withstand voltage derating should be 80% or above. C1,C3, C5
are ceramic capacitors, which is used to filter high-frequency noise. TVS is a recommended component to protect post-circuits if converter fails. External input
NTC is recommended to use 5D-9. External input MOV model is recommended to use S14K300.
2015.08.24-B/3
Page 4 of 8
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
AC/DC Converter
LH20(25) Series
2. EMC solution-recommended circuit
Can u se M OR NSUN
'
s FC-LX1 D
FUSE
AC( L)
CY1
MOV1 CX
CY2
LDM
LCM
AC( L)
+Vo
C1
C2
TVS1
RL
+
ACDC
-Vo
AC( N)
AC( N)
Fig 5: EMC Recommended circuit with higher requirements
Element
model
MOV1
CY1 , CY2
CX
LCM
LDM
FC-LX1D
FUSE
Recommended value
S14K300
1000pF/400VAC
0.1μF/275VAC
10mH, recommended to use MORNSUN’s FL2D-Z5-103
4.7μH/2A
2KV/4KV EMC filter
3.15A/250V slow fusing, necessary
3. Application of Trim and calculation of Trim resistance
+Vot
+Vot
R
1
V
ref
R
2
R
3
R
1
Trim
R
T
V
ref
R
2
R
3
Calculation formula of Trim resistance:
R
T
Trim
up: R
T
=
down : R
T
=
aR
2
R
2
-a
aR
1
R
1
-a
-R
3
-R
3
Vref
R
Vot- Vref R
1
is Trim resistance
T
a is a self-defined parameter, with
Vot- Vref
no real meaning.
a=
R
2
Vref
a=
0V
Trim up
0V
Trim down
Applied circuits of Trim (Part in broken line is the interior of models):
Vout
3.3V
5V
9V
12V
15V
24V
48V
R1(KΩ)
3.3
3.3
7.5
3.83
7.5
8.66
68
R2(KΩ)
1.98
3.3
2.87
1
1.5
1
3.73
R3(KΩ)
1
1
1
1
1
1
1
Vref(V)
1.24
2.5
2.5
2.5
2.5
2.5
2.5
Output voltage
after regulation,
variation
≤
±10%
Vot(V)
4. For more information about Mornsun EMC Filter products, please visit
www.mornsun-power.com
to
download the Selection Guide of EMC Filter
2015.08.24-B/3
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