LD12-20B12A2 Datasheet, PDF (3/5 Pages) MORNSUN Science& Technology Ltd. – LD12 series ----- are the 12W compact size power converter offered by Mornsun.

TEMPERATURE VS LOAD
Load(%)
100
80
60
50
40
-40
0
55 70
Te mp er atu r e (℃)
TYPICAL APPLICATIONS
INPUT VOLTAGE VS LOAD
Load(%)
100
80
70
60
40
20
85 100
240 264
Input voltage(Vac)
Load(%)
100
80
70
60
40
20
100 120
340 370
Input voltage(Vdc)
FUSE NTC
L
L
C1 C2 TVS
+Vo
+
RL
-Vo
N
N
Figure 1: LD12-20BXX EMC application circuit
L
L +Vo
+ Vo
AC-DC
N
N -Vo
- Vo
Figure 2: Note: This application is not supported for this series.
FUSE
L
N
可使用C我an司u模se块MFOCR-LN0S1UDN2’s FC-L01D2
R2
MO V4
MOV2
L
CY1
MOV1
R3
CX
LCM
MOV3
CY2
G D T4
R1
MO V5
N
ACDC
O U TPU T
Figure 3: LD12 series Recommended circuit for application require higher EMC standard
(external circuit output same as above)
Figure 4:EMC application circuit PCB layout
Safety and recommend wiring: linewidth A≥3mm,C≥9mm
EXTERNAL CIRCUIT PARAMETERS
Model
C1
C2
TVS
LD12-20B03
1µF /50V
220µF /10V
SMBJ7.0A
LD12-20B05
1µF /50V
220µF /10V
SMBJ7.0A
LD12-20B12
1µF /50V
120µF /25V
SMBJ20A
LD12-20B15
1µF /50V
120µF /25V
SMBJ20A
LD12-20B24
1µF /50V
68µF/50V
SMBJ30A
Note:
1. C1 is ceramic capacitor, it is used to filter high frequency noise. Output filtering capacitors C2 is electrolytic capacitors, It is recommended to use high frequency
and low impedance electrolytic capacitors. For capacitance and current of capacitor please refer to manufacture’s datasheet. Voltage derating of capacitor should
be 80% or above. TVS is a recommended component to protect post-circuits (if converter fails). External input NTC model is recommended to use 5D-9.
2. For standard EMC requirement, please refer to figure 1, if higher EMC requirement, please refer to figure 3 .
MOV1：561KD20；
MOV2、MOV3：561KD14；
MOV4、MOV5：561KD07；
GDT4：B5G3600；
CX：0.15µF/300VAC；
CY1、CY2：222M/400VAC；
R1、R2：2Ω/3W wirewound；
R3：1M Ω/2W ；
LCM：10mH-30mH；
FC-L01D2：4KV/6KV Surge protector。
3. FUSE：LD12 is recommended to use 3.15A/250V.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
LD12-20BXX
A/2-2012
Page3 of 5