IA_KS-2W & IA_S-2W Series
2W, FIXED INPUT, ISOLATED & REGULATED
DUAL OUTPUT DC-DC CONVERTER
FEATURES
l
SIP Package
l
1KVDC Isolation
l
Temperature Range: -40°C to +85°C
l
No Heat sink Required
l
Internal SMD Construction
l
No External Component Required
l
Industry Standard Pinout
l
RoHS Compliance
APPLICATIONS
Patent Protection
RoHS
The IA_KS-2W & IA_S-2W Series are specially designed
for applications where a group of polar power supplies are
isolated from the input power supply in a distributed power
supply system on a circuit board.
Rated Power
Package Style
Output Voltage
Input Voltage
Product S eries
MODEL SELECTION
IA 2409 KS-2W
These products apply to:
1) Where the voltage of the input power supply is fixed
(voltage variation
≤±5%);
2) Where isolation is necessary between input and output
(isolation voltage
≤1000VDC);
3) Where the regulation of the output voltage and the output
ripple noise are demanded.
PRODUCT PROGRAM
Input
Model
Nominal
IA0505S-1W5
IA0505S-2W
IA0509KS-2W
IA0512KS-2W
IA0515KS-2W
IA1205S-1W5
IA1209KS-2W
12
IA1212KS-2W
IA1215KS-2W *
IA2405S-1W5
IA2409KS-2W
24
IA2412KS-2W
IA2415KS-2W
* Designing.
Output
Current (mA)
Voltage (VDC)
Nominal
±5
±5
Max.
±150
±200
±100
±83
±67
±150
±100
±83
±67
±150
±100
±83
±67
Max.
±15
±20
±10
±9
±7
±15
±10
±9
±7
±15
±10
±9
±7
69
70
62
64
65
70
63
65
68
70
63
67
69
Efficiency
(%, Typ.)
Voltage (VDC)
Switching
frequency
(KHz, Typ)
100
55
67
67
200
83
91
91
200
83
100
200
91
5
4.75-5.25
±9
±12
±15
±5
11.4-12.6
±9
±12
±15
±5
±9
22.8-25.2
±12
±15
OUTPUT SPECIFICATIONS
Item
Line regulation
Load regulation
Output voltage accuracy
Temperature drift
Output ripple*
Noise*
Test Conditions
For Vin change of
±5%
10% to 100% full load
100% full load
100% full load
20MHz Bandwidth
20MHz Bandwidth
Min.
--
--
--
--
--
--
Typ.
--
--
--
--
20
75
Max.
±0.25
±1
±3
0.03
30
Unit
%
%/℃
mVp-p
150
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at DC-DC Application Notes.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
IA_KS-2W & IA_S-2W
2013.08.30-B/1 Page 1 of 5
APPLICATION NOTE
1)Requirement on output load
To ensure this module can operate efficiently and reliably, a minimum load is specified for this kind of DC/DC converter in addition to a
maximum load (namely full load). During operation, make sure the specified range of input voltage is not exceeded, the minimum output load
could not be less than 10% of the full load.
If the actual output power is very small, please connect a resistor with proper resistance at the
output end in parallel to increase the load, or use our company’s products with a lower rated output power (IA_KS
–1W/IA_S-1W
series).
2)Filtering
To get an extreme low ripple, an
“LC”
filtering network may be connected to the input and output ends of the DC/DC converter, which may
produce a more significant filtering effect. It should also be noted that the inductance and the frequency of the
“LC”
filtering network should be
staggered with the DC/DC frequency to avoid mutual interference (see figure 1).
L
L
Vin
Cin
+Vo
C out
DC DC
(Figure 1)
GND
L Cout
0V
-Vo
In some circuits which are sensitive to noise and ripple, a filtering capacitor may be added to the DC/DC output end and input end to reduce the
noise and ripple. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might arise.
For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees the EXTERNAL
CAPACITOR TABLE (see Table 1).
EXTERNAL CAPACITOR TABLE (Table 1)
Vin
Cin
Vout
Cout
(VDC)
(μF)
(VDC)
(μF)
5
4.7
±5
4.7
12
2.2
±9
2.2
24
1
±12
1
--
--
±15
0.47
It’s not recommend to connect any external capacitor in the application field with less than 0.5 watt output.
3)Input Over-voltage Protection Circuit
The simplest device for input over-voltage protection is a linear voltage regulator with overheat protection that is connected to the input end in
series (Figure 2).
Vin
GND
REG
+Vo
DC DC
(Figure 2)
0V
-Vo
4)When the environment temperature is higher than 71°C, the product output power should be less then 60% of the rated power.
5)It is not recommended to increase the output power capability by connecting two or more converters in parallel. The product is not hot-
swappable.
6)Use dual output simultaneously, forbid opening output pin(0V) to use as single output.
Note:
1. Operation under minimum load will not damage the converter; However, they may not meet all specifications.
2. Max. Capacitive Load is tested at nominal input voltage and full load.
3. Unless otherwise noted, All specifications are measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load.
4. In this datasheet, all test methods are based on our corporate standards.
5. All characteristics are for listed models, and non-standard models may perform differently. Please contact our technical support for more detail.
6. Please contact our technical support for any specific requirement.
7. Specifications of this product are subject to changes without prior notice.
MORNSUN Science & Technology Co.,Ltd.
Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China.
Tel: 86-20-38601850
Fax:86-20-38601272
E-mail:
info@mornsun.cn
Http://www.mornsun-power.com
IA_KS-2W & IA_S-2W
The copyright and authority for the interpretation of the products are reserved by MORNSUN
2013.08.30-B/1 Page 3 of 5
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