VB24xxS-1W.pdf 데이터시트 (총 4 페이지) - 파일 다운로드 VB24xxS-1W 데이타시트 다운로드

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15:29 SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
VBXXXXS/D-1W DC-DC CONVERTER
www.DataSheet4U.com
HIGH POWER DENSITY
S:7Pin SIP PACKAGE
D:14Pin DIP PACKAGE
SINGLE OUTPUT VOLTAGE
INDUSTRIAL STANDARD PIN-OUT
NO HEAT SINK REQUIRED
1KVAC ISOLATION
REULATED OUTPUT VOLTAGE
PCB MOUNTING
ELECTRICAL SPECIFICATIONS:
(All specifications tested typically @ 25°C, humidity<75%, nominal input and rated output unless otherwise noted.)
OUTPUT SPECIFICATIONS
Items:
Testing condition
Output accuracy:
At full load and nominal Vin
Output power:
Line regulation:
Input voltage from low to full load
Load regulation:
From 0% to full load
Ripple and noise:
20MHz bandwidth
Temperature drift:
Switching frequency
Short circuit protection
Min Typ
Max
±2%
1W
+/-0.5%max,(3.3 VDC output +/- 1 % max )
0.5% +/- 1 %
30mVp-p
±0.02 %/°C
100K HZ
Continue protection>30s
INPUT SPECIFICATIONS
Items:
Testing condition
Voltage range
Filter
Min
Typ
+/- 20%
Pi
Max
COMMON SPECIFICATIONS
Items
Min Typ.
Max
Operating temperature range
-40°C
+65°C
Storage temperature range
-55°C
+125°C
Humidity
<90%
Cooling
Free Air Convection
Leak current
1mA
Isolation voltage (VDC)
Isolation resistance (ohms)
Input to Output
1,000
109
Isolation capacitance (pF)
60
Efficiency (%)
See Product List
55
75
Case material
Non-conductive black plastic
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Edition-SZSY-07-01
Printed in P.R.C January 2007 Page 1 of 4

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Packing material
Dimension (mm / inch)
Weight (g)
MTBF (Hrs)
SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
VBXXXXS/D-1W DC-DC CONVERTER
Epoxy Resin UL94-V0
Tube
SIP: 19.6*6.0*10(0.77*0.24*0.40)
DIP: 20.4*10*8.2(0.8*0.4*0.32)
10
>1,000,000
PRODUCT LIST
Part Number
Input Voltage (VDC)
Range
Nominal
Max.
VB0503S-1W
4.5-5.5
5 7.25
VB0505S-1W
4.5-5.5
5 7.25
VB0512S-1W
4.5-5.5
5
7.25
VB1205S-1W
10.8-13.2
12
16.0
VB1212S-1W
10.8-13.2
12
16.0
VB1209S-1W
10.8-13.2
24
16.0
VB2405S-1W
21.6-26.4
24
30.0
VB2409S-1W
21.6-26.4
24
30.0
VB2412S-1W
21.6-26.4
24
30.0
VB0512D-1W
4.5-7.25
5
7.25
VB1205D-1W
10.8-13.2
12
16.0
VB2405D-1W
21.6-26.4
24
30.0
VB2409D-1W
21.6-26.4
24
16.0
Output
Max Current (mA) Voltage (VDC)
200 3.3
200 5
84 12
200 5
84 12
111 15
200 5
111 9
84 12
84 12
200 5
200 5
111 9
Efficiency
(%, Typ.)
68
67
72
64
68
68
68
66
77
72
69
68
68
Package
SIP
SIP
SIP
SIP
SIP
SIP
SIP
SIP
SIP
DIP
DIP
DIP
DIP
Connecting DC-DC Converters in Series
Galvanic isolation of the output allows multiple converters to be connected in series simply by connecting the positive output of one
converter to the negative of another (see figure 1). In this way, non-standard voltage rails can be generated, however, the current
output of the highest output voltage converter should not be exceeded. When converters are connected in series, additional filtering is
strongly recommended as the converters switching circuits are not synchronized. As well as a summation of the ripple voltages, the
output could also produce relatively large beat frequencies. A capacitor across the output will help, as will a series inductor.
Connecting DC-DC Converters in Parallel
If the available power output from a single converter is inadequate for the application, then multiple converters can be paralleled to
produce a higher output power. However, it is not recommended to parallel converters to generate a higher power output, please
select our higher power output modules or contact us for a customized solution.
It should be noted that it is always preferable to parallel multiple converters of the same type. For instance, if a 2.5W converter is
required, then either 2pcs AxxxxS-2W should be used or 3 AxxxxS-1W, not an AxxxxS-2W and an AxxxxS-1W. The reason for this
is that the output voltages are not sufficiently well matched to guarantee that an AxxxxS-2W would supply twice as much as an
AxxxxS-1W and the situation would occur where there was only 1W being drawn from the AxxxxS-2W and 1.5W from AxxxxS-1W.
Even with paralleled converters of the same type, loading will be uneven, however, there is only likely to be around a 10% difference
in output load when the output voltages are well matched.
When connecting converter outputs, it should be remembered that the switching will not be synchronous, hence some form of
coupling should be employed. One possible solution is to use a diode feed, this is suitable mainly for 12V and 15V output types only
where the diode voltage drop (typically 0.6V) will not significantly affect the circuit functionality (see figure 2). With 5V and 9V
supplies the diode drop is generally too large to consider as a suitable means of connecting paralleled converters. This method also
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Edition-SZSY-07-01
Printed in P.R.C January 2007 Page 2 of 4

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15:29 SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
VBXXXXS/D-1W DC-DC CONVERTER
whawsw.aDabteaaSthfereetq4uUe.cnocmy that will superimpose itself over the ripple of the two converters, this can be reduced by using an external
capacitor at the paralleled output. The preferred method of connecting converters in parallel is via series inductors on the output (see
figure 3). This configuration not only has a lower loss of voltage than the diode method, but by suitable choice of inductor and an
additional external capacitor, the beat frequency can be significantly reduced, as will the ripple from each converter. Suitable values
are given in the table below (see table 1), these typically reduce the beat and ripple frequencies by a factor of 10.
Isolation
One of the main features of the majority of Sunyuan components DC-DC converters is the high galvanic isolation capability. This
allows several variations on circuit topography by using a single DC-DC converter. The basic input to output isolation can be used to
provide either a simple isolated output power source, or to generate different voltage rails and /or dual polarity rails. These
configurations are most often found in data processing, instrumentation and other noise sensitive circuits where it is necessary to
isolate the load and noise presented to the local power supply rails from that of an entire system. Usually local supply noise appears
as common mode noise at the converter and does not pollute the main system power supply rails. The isolated positive output can be
connected to the input ground rail to generate a negative supply rail if required. Since the output is isolated from the input the choice
of reference for the output side can be relatively arbitrary, for example an additional single rail can be generated above the main
supply rail or offset by some other DC value.
Regulated converters need more consideration than the unregulated type for mixing the reference level. Essentially the single supply
rail has a regulator in its positive output rail only, hence referring the isolated ground will only work if all the current return is
through the DC-DC and not via other external components, such as diode bias, resistor feed. Have an alternative return path can
upset the regulation and the performance of the system may not equal that of the converter. In one word, the isolation features are to
generate two completely independent power supply but also united perfectly through the modern technology. This has been widely
used in the application of mixed circuits, A/D, D/A and other circuits that are sensitive to noise.
Filtering
All Sunyuan isolated DC-DC Converters have a fixed characteristic frequency at which the device operates. This fixed frequency
allows filtering that is relatively simple compared to pulse-skipping types. In a pulse-skipping converter a large range of frequencies
are encountered as the device adjusts the pulse interval for loading conditions.
NOMENCLATURE
TEMPERATURE DERATING GRAPH
120
100
80
60
Safe Operating Area
40
20
0
-40 0
40 71 85
Operating Temp (Celsius)
120
TYPICAL CONNECTION
+Vin
Cin
GND
DC-DC
CONVERTER
+Vo
0V
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Edition-SZSY-07-01
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SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
VBXXXXS/D-1W DC-DC CONVERTER
PINS DESCRIPTION
Note:PIN”7” can’t connect any component.
SIP
1
2
4
6
3,5,7
Connection
DIP
+Vin +Vin
14
GND GND
1
0V 0V
11
+VO +Vo
9
omitted NC
7
omitted 2,3,4,5,6,8,10,12,13
SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
Meihua Rd. Futian District,
Shenzhen 518049, China
Tel: +86-755-83100080
Fax: +86-755-83116652
Email: sales02@szsunyuan.com
www.szsunyuan.com
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Edition-SZSY-07-01
Printed in P.R.C January 2007 Page 4 of 4