VFA_YMD-5W & VFB_YMD-5W Series
5W, WIDE INPUT ISOLATED & REGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
FEATURES
Operating Temperature:
-40°C to +85°C
I/O-Isolation 1.5KVDC
Metal Case Package
No Heat sink Required
Industry Standard Pin out
MTBF>1,000,000 hours
RoHS Compliance
multi-country patent protection
RoHS
PRODUCT PROGRAM
Input
Part
Number
Voltage (VDC)
Nominal
Range
Max**
Voltage
(VDC)
Output
Current (mA)
Max
Min
Efficiency
(%, Typ)
APPLICATIONS
The VFA_YMD-5W/ VFB_YMD-5W Series
are specially designed for applications where
a wide range input voltage power supplies are
isolated from the input power supply in a
distributed power supply system on a circuit
board.
These products apply to:
1) Where the voltage of the input power supply
is wide range (voltage range
≤2:1);
2) Where isolation is necessary between input
and output (Isolation voltage
≤
1500VDC);
3) Where the regulation of the output voltage
and the output ripple noise are demanded.
VFA1205YMD-5W*
VFA1212YMD-5W*
VFA1215YMD-5W*
VFA1224YMD-5W*
VFB1205YMD-5W
VFB1212YMD-5W*
VFB1215YMD-5W*
VFB1224YMD-5W*
VFA2405YMD-5W*
VFA2412YMD-5W*
VFA2415YMD-5W*
VFA2424YMD-5W*
VFB2405YMD-5W
VFB2412YMD-5W
VFB2415YMD-5W*
VFB2424YMD-5W
VFA4805YMD-5W*
VFA4812YMD-5W*
VFA4815YMD-5W*
VFA4824YMD-5W*
VFB4805YMD-5W*
VFB4812YMD-5W*
VFB4815YMD-5W*
VFB4824YMD-5W*
12
9-18
20
±5
±12
±15
±24
5
12
15
24
±5
±12
±15
±24
5
12
15
24
±5
±12
±15
±24
5
12
15
24
±500
±210
±166
±105
1000
420
330
200
±500
±210
±166
±105
1000
420
330
200
±500
±210
±166
±105
1000
420
330
200
±50
±21
±17
±10
100
42
33
20
±50
±21
±17
±10
100
42
33
20
±50
±21
±17
±10
100
42
33
20
75
77
79
81
78
82
82
83
80
83
83
84
80
84
84
85
82
85
85
86
82
85
85
86
24
18-36
40
MODEL SELECTION
VFB2405YMD-5W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
48
36-72
80
* Designing.
* * Input voltage can’t exceed this value, or will cause the permanent damage.
COMMON SPECIFICATION
MORNSUN Science& Technology Ltd.
Address: 2th floor 6th building, Huangzhou
Industrial District, Guangzhou, China
Tel: 86-20-38601850
Fax: 86-20-38601272
Http://www.mornsun-power.com
Item
Test Conditions
Min
Typ
Max
Operating temperature
-40
85
Storage Temperature Range
-55
125
Storage Humidity Range
95
Cooling
Free Air Convection
Lead Temperature
1.5mm from case for 10 seconds
300
Temperature Rise at Full Load
50
Isolation voltage
Flash tested for 60 seconds
1500
Isolation resistance
Test at 500VDC
1000
Isolation capacitance
Input/Output
100
No-load Power Consumption
500
Output Short Circuit Protection
Continuous, automatic recovery
Case Material
Auminium alloy
1000K
MTBF
Weigh
12
Units
°C
%
°C
VDC
MΩ
pF
mW
Hour
g
MORNSUN reserves the copyright
Specifications subject to change without notice.
VFA_YMD-5W & VFB_YMD-5W
A/0-2007
Page 1 of 2
OUTPUT SPECIFICATIONS
Item
Output Power
Positive Voltage Accuracy
Negative Voltage Accuracy
Load Regulation
Line Regulation(at full load)
Temperature Drift(Vout)
Ripple
Noise
Switching Frequency
Test Conditions
See above products program
Refer to recommended circuit
Refer to recommended circuit
From 10% To 100% load
Input voltage from low to high
Refer to recommended circuit
20MHz bandwidth
20MHz bandwidth
100% load, nominal Input voltage
Min
Typ
±1
±3
±0.5
±0.2
0.02
30
75
300
Max
5
±3
±5
±1*
±0.5
50
150
Units
W
%
%/°C
mVp-p
KHz
APPLICATION NOTE
Recommended Circuit
All the VFA_YMD-5W & VFB_YMD-5W Series
have been tested according to the following
recommended testing circuit before leaving
factory. This series should be tested under load.
Never be tested under no load (see Figure 1 ).
Dual Output
Vin
Cin
+Vout
DC
DC
0V
-Vout
+Vout
GND
Single Output
Vin
Cin
* Dual output models unbalanced load: ±5%.
Note:
1.All specifications measured at T
A
=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
DC
DC
0V
TYPICAL CHARECTERISTICS
Temperature Derating Graph
GND
(Figure 1)
If you want to further decrease the output ripple,
you can increase capacitance properly or choose
capacitors with low ESR. However, the
capacitance should not be too high.(Table 1).
Extemal Capacitor Table(Table 1)
Cin
Vin
Vout
Cout
(VDC)
(VDC)
(uF)
12
24
48
--
100
100
100
--
5
12
15
24
100uF/1A
Operating Temp.(
C
)
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
First Angle Projection
25.40 (1.000)
10.16 10.16
(0.400) (0.400)
Dual Output
25.40 (1.000)
20.32 (0.800)
Single Output
2.54
(0.200)
4.10
+0.50
0
+0.020
0
0.50
9.50
(0.020) (0.374)
FOOTPRINT DETAILS
Pin
1
2
3
4
5
Single
GND
Vin
+Vo
N O P in
OV
Dual
GND
V in
+ Vo
OV
-VO
Note:
Unit:mm(inch)
Pin diameter:0.80mm(0.031inch)
Pin tolerances:
+
0.05mm(
+
0.002inch)
General tolerances:
+
0.25mm(
+
0.010inch)
MORNSUN reserves the copyright
Specifications subject to change without notice.
VFA_YMD-5W & VFB_YMD-5W
A/0-2007
Page 2 of 2
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