DC/DC Converter

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DC/DC Converters
DC/DC Converter
SH_RN-2W & SH _LT-2W Series
2W, Fixed input voltage, isolated & unregulated single
output
FEATURES
l Continuous short circuit protection
l Efficiency up to 80%
l Operating temperature range: -40℃ to +85℃
l Isolation voltage: 6K VDC
l DIP/SMD package
l Internal surface mounted design
l International standard pin-out
Patent Protection RoHS
SH _RN-2W & SH_LT-2W series is specially designed for applications where an isolated voltage is required in a distributed power supply system. It
is suitable for
1.Where the voltage of the input power supply is stable (voltage variation: ±10%Vin);
2.Where isolation is necessary between input and output (isolation voltage ≤6000VDC);
3.Where do not has high requirement of line regulation , load regulation and the ripple & noise of the output voltage;
Such as: pure digital circuits, low frequency analog circuits, and IGBT power device driving circuits.
Selection Guide
Input Voltage (VDC)
Part No.
Nominal
Output
Output Voltage
Efficiency
(%,Min./Typ.)
Max. Capacitive
Load
@ Full Load
(µF)
Certification
(VDC)
Output Current
(mA)(Max./Min.)
SH0503RN-2W
3.3
600/60
67/71
SH0505RN-2W
5
400/40
74/78
CE
SH0509RN-2W
9
223/22
76/78
CE
12
167/17
74/78
CE
(Range)
SH0512RN-2W
5
(4.5-5.5)
SH0515RN-2W
15
133/13
74/78
CE
SH0505LT-2W
5
400/40
74/78
CE
SH0512LT-2W
12
167/17
74/78
CE
SH0515LT-2W
15
133/33
74/78
CE
SH1205RN-2W
5
400/40
75/79
CE
SH1206RN-2W
6
334/34
75/79
SH1212RN-2W
9
223/22
75/79
15
133/13
76/80
CE
SH1215RN-2W
SH1205LT-2W
12
(10.8-13.2)
220
CE
5
400/40
75/79
CE
SH1212LT-2W
12
167/17
75/79
CE
SH1215LT-2W
15
133/33
76/80
CE
SH2405RN-2W
5
400/40
73/77
CE
CE
SH2415RN-2W
SH2403LT-2W
SH2405LT-2W
24
(21.6-26.4)
SH2415LT-2W
15
133/13
76/80
3.3
400/40
69/73
5
400/40
73/77
CE
15
133/13
76/80
CE
Input Specifications
Item
Operating Conditions
Input Current (full load / no-load)
Surge Voltage (1sec. max.)
Reflected Ripple Current
Input Filter
Schmid Multitech GmbH
Min.
Typ.
Max.
5V input
--
564/65
--
12V input
--
210/30
--
24V input
--
109/10
--
5V input
-0.7
--
9
12V input
-0.7
--
18
24V input
-0.7
--
30
3.3V/5V input
--
20
--
Other input
--
5
--
Unit
mA
VDC
mA
Capacitor filter
-1-
The Copyright and authority for the interpretation of the products are reserved by SCHMID-M. Specifications subject to change without notice.
DC/DC Converter
SH_RN-2W & SH_LT-2W Series
Output Specifications
Item
Operating Conditions
Min.
Output Voltage Accuracy
Typ.
Max.
Unit
See tolerance envelope graph (Fig. 1)
Line Regulation
Input voltage change: ±1%
Load Regulation
10%-100% load
3.3V output
--
--
±1.5
Other output
--
--
±1.2
3.3VDC output
--
15
20
5V/6VDC output
--
12
9VDC output
--
9
12VDC output
--
8
15VDC output
15
--
%
--
7
Ripple & Noise*
20MHz bandwidth
--
150
200
mVp-p
Temperature Drift Coefficient
100% load
--
--
±0.03
%/℃
Output Short Circuit Protection
Continuous, self-recovery
Note: * Ripple and noise tested with “parallel cable” method, please see DC-DC Converter Application Notes for specific operation methods.
General Specifications
Item
Operating Conditions
Min.
Isolation Voltage
Input-output, with the test time of 1 minute
and the leak current lower than 1mA
6000
Isolation Resistance
Input-output, isolation voltage 500VDC
Isolation Capacitance
Input-output, 100KHz/0.1V
Operating Temperature
Derating if the temperature ≥85°C,
(see Fig. 2)
Typ.
Max.
Unit
--
--
VDC
1000
--
--
MΩ
--
10
--
pF
-40
--
85
-55
--
125
Storage Temperature
Casing Temperature Rise
Ta=25°C
--
15
25
Pin Welding Resistance Temperature
Welding spot is 1.5mm away from the casing,
10 seconds
--
--
300
°C
Peak temp.≤245℃, maximum duration time≤60s
at 217℃. For actual application, please refer to
IPC/JEDEC J-STD-020D.1.
Reflow Soldering Temperature
Storage Humidity
Non-condensing
--
--
95
Switching Frequency
100% load, nominal input voltage
--
80
--
MTBF
MIL-HDFK-217F@25°C
3500
--
--
%
KHz
K hours
Physical Specifications
Casing Material
Black flame-retardant heat-proof epoxy resin (UL94-V0)
Package Dimensions
SH_RN-2W
23.86*18.00*7.80mm
SH_LT-2W
23.86*18.10*8.00mm
Weight
5.5g (Typ.)
Cooling Method
Free air convection
Tolerance E nvelope Graph
+10%
+5%
Output Voltage
Accuracy(%)
Rated
Output Vo ltage
Typ ic
al Loa
d
C u rv
+2.5 %
e
-2.5 %
-7.5 %
50
70
10 0
Output Current Pe rcent age(%)
(Nominal Input Voltage)
Fig. 1
Output Power Per centage(%)
Product Characteristic Curve
Te m pe ratu re D e rating Grap h
120
100
80
60
40
Safe Operati ng Are a
20
0
-40
0
40
85 105 120
Am bi ent Temperature(℃ )
Fig. 2
-2-
DC/DC Converter
SH_RN-2W & SH_LT-2W Series
Design Reference
1. Typical application
If it is required to further reduce input and output ripple, a filter capacitor can be connected to the input and output terminals, see Fig.3.
Moreover, choosing suitable filter capacitor is very important, start-up problems may be caused by too large capacitance. To ensured the
modules running well, the recommended capacitive load values as shown in Table 1.
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat
protection that is connected to the input or output end in series (Fig.4).
GND
L
L
Vin
Cin
DC DC
+Vo
Vin
Cout
REG
GND
0V
REG
DC DC
Fig.4
Fig.3
+Vo
0V
Recommended capacitive load value table (Table 1)
Cin
(µF)
Vout
(VDC)
5
4.7
3.3/5
10
12
2.2
9
4.7
24
1
12
2.2
--
--
15
1
Vin
(VDC)
Cout
(µF)
It is not recommended to connect any external capacitor when output power is less than 0.5W.
2. Output load requirements
To ensure the module work efficiently and reliably, during the operation, the min. output load should be no less than 10% of the full load. If
the actual output power is low, please connect a resister to the output terminal in parallel, with a recommenced resistance which is 10% of
the rated power, and derating is required during operation.
Dimensions and Recommended Layout
SH_RN-2W series
-3-
DC/DC Converter
SH_RN-2W & SH_LT-2W Series
SH_LT-2W series
Notes:
1. If the product is operated under the min. required load, the product performance cannot be guaranteed to comply with all
performance indexes in this datasheet;
2.
The max. capacitive load should be tested within the input voltage range and under full load conditions;
3.
Unless otherwise specified, data in this data sheet should be tested under the conditions of Ta=25°C, humidity<75% when inputting
nominal voltage and outputting rated load;
4.
All index testing methods in this datasheet are based on our Company’s corporate standards;
5.
The performance indexes of the product models listed in this manual are as above, but some indexes of non-standard model products
will exceed the above-mentioned requirements, and please directly contact our technicians for specific information;
6.
We can provide product customization service;
7.
Specifications of this product are subject to changes without prior notice.
Schmid Multitech GmbH
-4-
The Copyright and authority for the interpretation of the products are reserved by SCHMID-M. Specifications subject to change without notice.
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