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SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
DW2-5 SERIES DC-DC CONVERTER
www..com
RATED 2-5W OUTPUT HIGH POWER DENSITY SINGLE&DUAL OUTPUT INDUSTRIAL STANDARD PIN-OUT NO HEAT SINK REQUIRED 1K VDC ISOLATION WIDE INPUT 21 REGULATED OUTPUT PCB MOUNTING OVER CURRENT&SHORT CIRCUIT PROTECTION
The DW2-5 series DC-DC converter offers 2-5 watts regulated power from a 24 PIN international standard DIP package. The series are especially designed for the application of telecommunication, industry control, instrumentation and measurements. With its features, the product can be used where the wider input, regulated output and isolation needed.
ELECTRICAL SPECIFICATIONS
All specifications tested typically @ 25C, humidity<75%, nominal input and rated output unless otherwise noted.
OUTPUT SPECIFICATIONS
Items: Output accuracy: Output power: Line regulation: Load regulation: Ripple and noise: Temperature drift Minimum load Switching frequency Over load protection Short circuit protection % of FL at nominal input 400KHz 120 Continuous and automatic recovery Full load Input voltage from low to high From 10% to full load 20MHz bandwidth Single Vout Dual Vout Testing condition At full load and nominal Vin 10% 2W-5W Min Typ Max 2% full load120% 0.5% 0.5% 2% 50mVp-p 0.03 %/C 10%
INPUT SPECIFICATIONS
Items: Testing condition 5VDC 12VDC Input voltage range 24VDC 48VDC Input filter Start-up time Nominal Vin and certain load Pi 100mS Min Typ 4.5-9VDC 9-18VDC 18-36VDC 36-72VDC Max
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Edition-SZSY-07-01
Printed in P.R.C January 2007
Page 1 of 5
SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
DW2-5 SERIES DC-DC CONVERTER
www..com
COMMON SPECIFICATIONS
Items Operating temperature range Storage temperature range Humidity Cooling Isolation voltage (VDC) Isolation resistance (ohms) Isolation capacitance (pF) Efficiency (%) Case material Potting material Packing material Dimension (mm / inch) Weight (g) MTBF (Hrs) 10
6
Min -40C -55C
Typ.
Max +85C +125C <75%
Free Air Convection Input to Output 1,000 109 30 See Product List 70 Non-conductive black copper Epoxy Resin UL94-V0 Tube 25.40*25.40*10.14 14 (1.00*1.00*0.40) 80
PRODUCT LIST
Part Number
DW5-12S33 DW5-12S05 DW5-12S12 DW5-12S15 DW5-12D05 DW5-12D12 DW5-12D15 DW5-24S33 DW5-24S05 DW5-24S12 DW5-24S15 DW5-24D05 DW5-24D12 DW5-24D15 DW5-48S3R3 DW5-48S05 DW5-48S12 DW5-48S15 DW5-48D24 DW5-48D05 DW5-48D12 DW5-48D15
Input Voltage (VDC)
Range Nominal
Output
Current (mA) Voltage (VDC)
Efficiency (%, Typ.) 70 78 80 80 78 80 80 70 80 80 80 78 80 80 70 78 80 80 80 78 80 80 3.3 5 12 15
5 12 15
Package DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output Dual Output
12 12 12 9-18 12 12 12 12 24 24 24 18-36 24 24 24 24 48 48 48 36-72 48 48 48 48 48
1100 1000 417 333 500 208 167 1100 1000 417 333 500 208 167 1100 1000 417 333
100
3.3 5 12 15
5 12 15
3.3 5 12 15
24 5 12 15
500 208 167
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Edition-SZSY-07-01
Printed in P.R.C January 2007
Page 2 of 5
SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
DW2-5 SERIES DC-DC CONVERTER
www..com
PRODUCT LIST
Part Number DW2-12S33 DW2-12S05 DW2-12S12 DW2-12S15 DW2-12D05 DW2-12D12 DW2-12D15 DW2-24S33 DW2-24S05 DW2-24S12 DW2-24S15 DW2-24D05 DW2-24D12 DW2-24D15 DW2-48S33 DW2-48S05 DW2-48S12 DW2-48S15 DW2-48D05 DW2-48D12 DW2-48D15
Input Voltage (VDC)
Range Nominal
Output
Current (mA) Voltage (VDC)
Efficiency (%, Typ.) 70 78 80 80 78 80 80 70 80 80 80 78 80 80 70 78 80 80 78 80 80
Package DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP
12 12 12 12 9-18 12 12 12 24 24 24 18-36 24 24 24 24 48 48 48 36-72 48 48 48 48
667 400 167 133 200 84 67 667 400 167 133 200 84 67 667 400 167 133 200 84 67
3.3 5 12 15 5 12 15 3.3 5 12 15 5 12 15 3.3 5 12 15 5 12 15
Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output
PRODUCT LIST
Part Number DW3-12S33 DW3-12S05 DW3-12S12 DW3-12S15 DW3-12D05 DW3-12D12 DW3-12D15 DW3-24S33 DW3-24S05 DW3-24S12 DW3-24S15 DW3-24D05 DW3-24D12 DW3-24D15 DW3-48S33 DW3-48S05 DW3-48S12 DW3-48S15 DW3-48D05 18-36 9-18 Input Voltage (VDC)
Range Nominal Max.
Output
Current (mA) Voltage (VDC)
Efficiency (%, Typ.) 70 78 80 80 78 80 80 70 80 80 80
Package DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP
12 12 12 12 12 12 12 24 24 24 24
909 600 250 200 300 125 100 909 600 250 200
3.3 5 12 15 5 12 15 3.3 5 12 15
5 12 15
Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output Single Output Single Output Single Output Single Output Dual Output Dual Output Dual Output Single Output Single Output Single Output Single Output
24 24 24 36-72 48 48 48 48 48
300 125 100 909 600 250 200 300
78 80 80 70 78 80 80 78
Edition-SZSY-07-01
DIP DIP DIP DIP DIP DIP DIP DIP
3.3 5 12 15
5
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Printed in P.R.C January 2007
Page 3 of 5
SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
DW3-48D12 DW3-48D15
www..com
DW2-5 SERIES DC-DC CONVERTER 48 125
48 200
12 15
80 80
DIP DIP
Dual Output Dual Output
Note:(1) A minimum 10% load is required on the output to meet the published specifications. Even though working at no load condition will not damage the device, it is not adoptable. (2) If the output power needed is smaller than rated, please connect a proper value resistor at output end in parallel to increase the load or contact us for a lower power product. (3) For lower noise and ripple, please use a "LC" filter network at the output. The capacitance must be at proper value in case of start-up problems.
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 has a beat frequency 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.
Copyright @ Shenzhen Sunyuan Technology Co., Ltd.
Edition-SZSY-07-01
Printed in P.R.C January 2007
Page 4 of 5
SHENZHEN SUNYUAN TECHNOLOGY CO., LTD.
DW2-5 SERIES DC-DC CONVERTER
www..com NOMENCLATURE
TEMPERATURE DERATING GRAPH
120
Output Power%
100 80 60 40 20 0 -40 0 40 71 85 120
Safe Operating Area
Operating Temp (Celsius)
TYPICAL CONNECTION
+Vin Cin DC-DC
CONVERTER
+Vo
+Vin Cin DC-DC
CONVERTER
+Vo
0V Cout2 -Vo
GND
GND
0V
Dual Output OUTLINE DIMENSION PINS DESCRIPTION
Single Output
Single Output Vin GND +Vo Omitted 0V
Pin 1 2 3 4 5
Dual Output Vin GND +Vo 0V -Vo
SHENZHEN SUNYUAN TECHNOLOGY CO., LTD. 3F, 3Bldg, Duoli Industrial Zone, 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 5 of 5

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