MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
AC/DC Converter
LH60-20Bxx(-DT) Series
EMC Specifications
EMI
CE
RE
ESD
RS
EFT
Surge
CS
PFM
Voltage dips, short interruptions
and voltage variations immunity
CISPR22/EN55022 CLASS B
CISPR22/EN55022 CLASS B
IEC/EN61000-4-2
Contact ±6KV/Air ±8KV
Perf. Criteria B
perf. Criteria A
perf. Criteria B
perf. Criteria B
perf. Criteria B
perf. Criteria A
perf. Criteria A
perf. Criteria B
IEC/EN61000-4-3 10V/m
IEC/EN61000-4-4 ±4KV
IEC/EN61000-4-5 line to line ±2KV/line to ground ±4KV
EMS
IEC/EN61000-4-5 line to line ±4KV/ line to ground ±6KV
(See Fig. 2 for recommended circuit)
IEC/EN61000-4-6 10 Vr.m.s
IEC/EN61000-4-8 10A/m
IEC/EN61000-4-11 0%,70%
Product Characteristic Curve
O u tp u t Po w e r P e rc e n ta g e (% )
10 0
Te m p e r a t u r e D e r a ti n g C u r v e
2 4 V, 4 8 V O u t p u t
1 2 V, 1 5 V O u t p u t
5 V,9 V O u t p u t
6 2 .5
60
50
25
- 4 0 -3 0
In p u t v o l t a g e :
1 1 0 - 2 6 4 VA C
13 0-37 0V D C
0
45 50 55
70
A m b i e n t Te m p e r a t u r e (
℃
)
O u t p u t P ow e r P e rc e n ta g e (% )
10 0
80
60
40
O u tp u t P o w e r P e rc e n ta g e( % )
I n p u t V o lt a g e D e r a t in g C u r v e
(
L H 6 0 - 2 0 B x x S e r ie s
)
I n p u t Vo l ta g e D e r a t in g C u r v e
(
L H 6 0 - 2 0 B x x - D T S e ri e s
)
10 0
80
60
50
40
A m b ie n t t e m p e ra t u r e : 2 5
℃
A m b ie n t t e m p e ra t u re :2 5
℃
90
122
110
130
In p u t V o l t a g e
2 64
3 70
VA C
VDC
55
77
90
122
110
130
2 64
3 70
VA C
VDC
In p u t Vo l t a g e
Note:
①Input
voltage should be derated based on temperature derating when it is 55~110VAC/77~130VDC;
②This
product is suitable for use in natural air cooling environments, if in a closed environment, please contact our company’s FAE.
2016.07.19-B/0
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
AC/DC Converter
LH60-20Bxx(-DT) Series
Design Reference
1. Typical application circuit
A C (L)
FU S E
MOV
NTC
A C (L )
A C (N )
+ Vo
C1
C 2 TVS LO A D
AC -DC
A C (N )
-Vo
Model
LH60-20B05(-DT)
LH60-20B09(-DT)
LH60-20B12(-DT)
LH60-20B15
LH60-20B24
LH60-20B48
C1(µF)
1
C2(µF)
680
470
330
330
200
100
TVS tube
SMBJ7.0A
SMBJ12A
SMBJ20A
SMBJ20A
SMBJ30A
SMBJ64A
Fig. 1
Note: Output filtering capacitor C2 is electrolytic capacitor, 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 is ceramic
capacitor, which is used to filter high-frequency noise. TVS is a recommended component to protect post-circuits if converter fails. External input FUSE model is
recommended to use 3.15A/250VAC, slow fusing. External input NTC model is recommended to use 5D-9. External input MOV model is recommended to use
S14K350.
2. EMC solution-recommended circuit
A C ( L)
F US E
N TC
MOV 4
A C ( L)
MOV 2
MOV 1
MOV 3
A C( N )
MOV 5
CX
R1
C Y1
LC M
C Y2
A C( N )
+ Vo
C1
C2
TVS
LO A D
A C -D C
- Vo
GDT
Fig 2
(Output external circuit refer to the typical application circuit)
Element model
MOV1
MOV2
MOV3
MOV4
MOV5
CX
CY1
Recommended value
S20K350
S14K350
S14K350
S10K350
S10K350
0.15µF/300VAC
2.2nF/400VAC
Element model
CY2
R1
LCM
GDT
NTC
FUSE
--
Recommended value
2.2nF /400VAC
1MΩ/2W
2.2 mH,
recommended to use MORNSUN’s FL2D-30-222;
B5G3600
5D-14
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
R
T
Trim
0V
Trim up
0V
Trim down
Applied circuits of Trim (Part in broken line is the interior of models)
Calculation formula of Trim resistance:
up: R
T
=
down : R
T
=
aR
2
R
2
-a
aR
1
R
1
-a
-R
3
-R
3
Vref
a=
R
1
Vot- Vref
a=
Vot- Vref
R
2
Vref
R
T
is Trim resistance
a is a self-defined parameter, with
no real meaning.
2016.07.19-B/0
Page 4 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
AC/DC Converter
LH60-20Bxx(-DT) Series
Vout
5V
9V
12V
15V
24V
48V
R1(KΩ)
3.3
4.7
3.83
7.5
8.66
33
R2(KΩ)
3.3
1.8
1
1.5
1
1.8
R3(KΩ)
1
1
1
1
1
1
Vref(V)
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
Dimensions and Recommended Layout
A5 Chassis mounting Dimensions
2016.07.19-B/0
Page 5 of 6
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