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| (R) (R) PRELIMINARY INNOVATION and EXCELLENCE Dual Output Mixed Voltage, DSM Models Surface-Mount, 3.3V and 5V 15Watt, DC/DC Converters Features I I I I I Regulated 5V and 3.3V outputs 5V @ 2.65Amps/3.3V @ 3 Amps capability 15 Watts total output power Small 1" x 2" x 0.52" SMT package Available input voltage ranges: 10-18V, 18-36V or 36-75V No-load stable operation UL1950 and EN60950 safety approvals mark available (75V-input models) Continuous short-circuit protection Fully isolated, 1500Vdc guaranteed -40 to +100C operating temperature Input under and overvoltage shutdown Output OVP, thermal shutdown I I I I I I I I For surface-mount applications requiring 15 Watts of power from 5V and 3.3V, DATEL offers a new power sharing DC/DC converter capable of meeting your output current requirements. The DSM-5/2.65-3.3/3-D48 (36-75V input), DSM5/2.65-3.3/3-D24 (18-36V input) and DSM-5/2.65-3.3/3-D12 (10-18V input) are fully isolated DC/DC converters capable of delivering any combination of 5V and 3.3V output current up to a combined total of 15 Watts of output power. Housed in a 1" x 2" x 0.52" metal, surface-mount package coated with electrically non-conductive finish, these converters are regulated by a 3.3V control loop that provides load regulation of 0.5% for 3.3V output and 2% for 5V output. All models include input Pi filtering, input overvoltage and undervoltage shutdown circuitry, output overvoltage protection, output short-circuit and currentlimiting protection, and thermal shutdown. All models provide trim capability and an on/off control function or sync control. Fully synchronous output rectification provides high efficiency (86%) and a stable output under no-load conditions. DSM power sharing modules offer low output ripple and noise performance, 1500 Vdc isolation voltage, and are fully specified for -40 to +100C operation. These devices meet IEC950, UL1950 and EN6950 safety standards; CB reports are available on request. "D48" models are CE marked (meets LVD requirements). +INPUT +5V OUTPUT SWITCH CONTROL +3.3V OUTPUT -INPUT OUTPUT RETURN ON/OFF CONTROL (SYNC) PWM CONTROLLER OPTO ISOLATION UV & OV COMPARATORS THERMAL SHUTDOWN REFERENCE & ERROR AMP TRIM Figure 1. Simplified Schematic DATEL, Inc., Mansfield, MA 02048 (USA) * Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 * Email: sales@datel.com * Internet: www.datel.com XWR Series 1 5 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S Performance Specifications and Ordering Guide VOUT (Volts) 5 3.3 5 3.3 5 3.3 Input Regulation (Max.) Line 1% 0.5% 1% 0.5% 1% 0.5% Model DSM-5/2.65-3.3/3-D12 DSM-5/2.65-3.3/3-D24 DSM-5/2.65-3.3/3-D48 IOUT (Amps) 2.65 3 2.65 3 2.65 3 Output R/N (mVp-p) Typ. 40 60 40 60 40 60 Max. 75 100 75 100 75 100 Load 2% 0.5% 2% 0.5% 2% 0.5% VIN Nom. (Volts) 12 24 48 Range (Volts) 10-18 18-36 36-75 IIN (mA) 70/1450 40/720 20/360 Efficiency Min. 83% 83% 83% Typ. 86% 86% 86% Package (Case, Pinout) C18A, P36 C18A, P36 C18A, P36 Typical at TA = +25C under nominal line voltage and balanced "full-load" conditions (5V @ 1.5A/3.3V @ 2.25A). Any combination of 5V/3.3V rated IOUT current, not to exceed 15 Watts of output power. (See derating graphs.) Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 0.47F ceramic in parallel with 100F tantalum output capacitors. Tested from 10% to 100% full load (other output at 10% full load). Nominal line voltage, no load/balanced full-power condition. PA R T N U M B E R S T R U C T U R E DSM - 5 / 2.65 - 3.3 / 3 - D48 S Dual Output/ Surface-Mount Series V1 Nominal Output Voltage: 5 Volts I1 Maximum Output Current: 2.65 Amps V2 Nominal Output Voltage: 3.3 Volts Add "S" suffix as desired Input Voltage Range: D12 = 10-18 Volts (12V nominal) D24 = 18-36 Volts (24V nominal) D48 = 36-75 Volts (48V nominal) I2 Maximum Output Current: 3 Amps Part Number Suffixes DSM 15 Watt DC/DC's are designed so an On/Off Control function with either positive polarity (no suffix), or a Sync function ("S" suffix) can be added in the pin 3 position. No Suffix On/Off Control function (positive polarity) on pin 3 S Sync function on pin 3 MEC A N I C A L S P E C I FI C A T I O N S 0.100 (2.54) 4 3 0.500 (12.70) 2 0.300 (7.62) 1 TOP VIEW 2.00 (50.80) 0.50 (12.70) METAL CASE 9 8 0.110 (2.79) Case C18A 7 6 5 0.800 (20.32) 4 EQ. SP. @ 0.200 (5.08) 1.00 (25.40) I/O Connections Pin 1 2 3 4 5 6 7 8 9 Function P36 +Input -Input On/Off Control Case +5V Output NC Output Output +3.3V Output Trim 0.10 (2.54) 0.110 (2.79) 0.015 (0.38) 0.020 (0.51) INSULATED BASE 0.055 (1.40) 2 1 5 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S DSM Models Output (continued) Performance/Functional Specifications Typical @ TA = +25C under nominal line voltage, balanced "full-load" conditions, unless noted. Isolation Capacitance Isolation Resistance Current Limit Inception: 5V @ 95% VOUT (3.3V @ 0.25A) 3.3V @ 98.5% VOUT (5V @ 0.25A) Short Circuit Current: 5V Output 3.3V Output Overvoltage Protection: 5V Output 3.3V Output Maximum Capacitive Loading: D12 Models D24 Models D48 Models Temperature Coefficient Dynamic Load Response: 5V (50-100% step to 97.5% VOUT) 3.3V (50-100% step to 98.5% VOUT) Start-Up Time: VIN to VOUT On/Off to VOUT Switching Frequency MTBF: D12 Models D24 Models D48 Models Operating Temperature: (Ambient): Without Derating: With Derating Case Temperature: Maximum Operational For Thermal Shutdown Storage Temperature Dimensions Internal Case Connection Case Material 470pF 100M 4-5.5 Amps 3-4 Amps 5.5 Amps average, continuous current 3 Amps average, continuous current Magnetic feedback TBD Volts TBD Volts TBD F (5V) TBD F (5V) TBD F (5V) 0.02% per C TBD F (3.3V) TBD F (3.3V) TBD F (3.3V) Input Input Voltage Range: D12 Models D24 Models D48 Models Overvoltage Shutdown: D12 Models D24 Models D48 Models Start-Up Threshold: D12 Models D24 Models D48 Models Undervoltage Shutdown: D12 Models D24 Models D48 Models Input Current: Normal Operating Conditions Standby Mode: Off, OV, UV, Thermal Shutdown Input Reflected Ripple Current: Source Impedance D12 Models D24/D48 Models Internal Input Filter Type Reverse-Polarity Protection: D12 Models D24 Models D48 Models On/Off Control: (Pin 3): 10-18 Volts (12V nominal) 18-36 Volts (24V nominal) 36-75 Volts (48V nominal) 19-23 Volts (21V nominal) 37-42 Volts (40V typical) 77-81 Volts (78.5V typical) 9-10 Volts (9.3V typical) 16.5-18 Volts (17V typical) 34-36 Volts (35V typical) 7.0-8.5 Volts (8V typical) 16-17 Volts (16.5V typical) 32.5-35.5 Volts (34.5V typical) See Ordering Guide 10mA <0.1, no external input filtering TBD TBD Capacitive (1.5F) 1 minute duration, 4A maximum 1 minute duration, 2A maximum 1 minute duration, 1A maximum On = open or 13V - +VIN, IIN @ 13V = 800A Off = 0-0.8V, IIN @ 0V = 1mA 1-2.7 Volts 0-0.9 Volts 2.8-5 Volts 35k minimum 3.5-4.8 Volts 35mA 160-360nsec Dynamic Characteristics 300sec maximum (3.3V @ 0.25A) 300sec maximum (5V @ 0.25A) 10msec maximum TBD msec maximum 250kHz (25kHz) Environmental TBD hours TBD hours TBD hours +60C To +100C (See Derating Curves) +100C TBD C minimum, TBDC maximum -40 to +120C Sync: (Option, Pin 4): Input Threshold (Rising Edge Active) Input Voltage Low Input Voltage High Input Resistance Output High Voltage (100A load) Output Drive Current Input/Output Pulse Width VOUT Accuracy: 5V Output 3.3V Output Minimum Loading Per Specification Minimum Load For Stability Ripple/Noise (20MHz BW) Line/Load Regulation Efficiency Cross Regulation: 5V Output (5V@0.25A, 3.3V@0.25-3A) 3.3V Output (3.3V@0.25A, 5V@0.25-2.65A) Trim Range Isolation Voltage: Input-to-Output Input-to-Case Output-to-Case Physical 2" x 1" x 0.52" (50.8 x 25.4 x 13.2mm) Case connection via pin 4 Corrosion resistant steel with non-conductive, epoxy-based, black enamel finish and plastic baseplate Brass, solder coated, surface-mount leads 1.4 ounces (39.7 grams) Output 2% maximum 1.5% maximum 250mA No load See Ordering Guide See Ordering Guide See Ordering Guide / Efficiency Curves Pin Material Weight TBD ounces Primary to Secondary Insulation Level Operational Balanced "full-load" is 5V @ 1.5A/3.3V @ 2.25A. All models are specified with external 0.47F ceramic and 100F tantalum output capacitors. See Technical Notes/Graphs for details. The On/Off Control function can be replaced with a Sync function. See Part Number Suffixes and Technical Notes for details. Applying a voltage to On/Off Control (pin 3) when no input power is applied to the converter can cause permanent damage. Output noise may be further reduced with the installation of additional external output capacitors. See Technical Notes. On/Off control is designed to be driven with open collector or by appropriate voltage levels. Voltages must be referenced to the -Input (Pin 2). Demonstrated MTBF available on request. For conditions with less than minimum loading, outputs remain stable. However, regulation performance will degrade. TBD TBD 5% 1500Vdc minimum TBD Vdc minimum TBD Vdc minimum 3 XWR Series 1 5 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S Absolute Maximum Ratings Input Voltage: Continuous: 1 +INPUT +5V OUTPUT 5 +5V LOAD D12 Models D24 Models D48 Models Transient (100msec): D12 Models D24 Models D48 Models 23 Volts 42 Volts 81 Volts 25 Volts 50 Volts 100 Volts Input Current must be limited. 1 minute duration. Fusing recommended. 4 Amps 2 Amps 2 Amps Current limited. Devices can withstand an indefinite output short circuit. 2 -INPUT 3 4 CASE TRIM ON/OFF CONTROL +3.3V OUTPUT OUTPUT RETURN 7 +3.3V LOAD 8 Input Reverse-Polarity Protection: D12 Models D24 Models D48 Models Output Current On/Off Control (Pin 3) Max. Voltages: Referenced to -Input (pin 2) No Suffix S Suffix Storage Temperature Lead Temperature (Soldering, 10 sec.) 9 R TRIM DOWN RTDOWN (k) = 2.49(VO - 1.234) 3.3 - VO -16.9 Figure 3. Decrease Output Voltage Trim Connections Using A Fixed Resistor +VIN +5.7 Volts -40 to +120C +300C 2 1 +INPUT -INPUT 3 4 CASE TRIM 9 R TRIM UP ON/OFF CONTROL +3.3V OUTPUT +5V OUTPUT 5 +5V LOAD OUTPUT RETURN 7 +3.3V LOAD 8 These are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied, nor recommended. TECHNICAL NOTES Trimming Output Voltages The DSM converters have a trim capability (Pin 9) that allow users to adjust the output voltages 5%. A trim adjustment will cause an equal percentage of change in both outputs. Adjustments to the output voltages can be accomplished via a trim pot, Figure 2, or a single fixed resistor as shown in Figures 3 and 4. A single fixed resistor can increase or decrease the output voltage depending on its connection. Fixed resistors should have absolute TCR's less than 100ppm/C to minimize sensitivity to changes in temperature. A single resistor connected from the Trim pin (Pin 9) to the +3.3V Output (Pin 8), see Figure 3, will decrease the output voltages. A resistor connected from the Trim pin (Pin 9) to Output Return (Pin 7) will increase the output voltages. Output Power (Watts) Figure 4. Increase Output Voltage Trim Connections Using A Fixed Resistor 3.073 VO - 3.3 RT UP (k) = -16.9 Accuracy of adjustment is subject to tolerances or resistor values and factory-adjusted output accuracy. VO = desired output voltage. Output Power vs. Ambient Temperature VIN = Nominal, Natural Convection Air flow 16 14 12 10 8 6 4 Trim adjustments greater than 5% can have an adverse effect on the converter's performance and is not recommended. 1 +INPUT 2 -INPUT 3 4 CASE ON/OFF CONTROL +5V OUTPUT 5 +5V LOAD OUTPUT RETURN 7 20k 5-22 Turns +3.3V LOAD 2 0 -40 +3.3V OUTPUT TRIM 8 0 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 9 Ambient Temperature (C) Figure 2. Trim Connections Using A Trimpot 4 1 5 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S DSM Models Typical Performance Curves D12 Models DSM-5/2.65-3.3/3-D12 - Typical 3.3 VOUT Efficiency vs. Load (+5V @ 250mA) 90 VIN = 10V D24 Models DSM-5/2.65-3.3/3-D24 - Typical 3.3 VOUT Efficiency vs. Load (+5V @ 250mA) 90 VIN = 18V 85 85 Efficiency (%) Efficiency (%) 80 VIN = 12V 80 VIN = 24V 75 VIN = 18V 75 VIN = 36V 70 70 65 65 60 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 +3.3V Output Current (Amps) 60 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 +3.3V Output Current (Amps) DSM-5/2.65-3.3/3-D12 - Typical 5 VOUT Efficiency vs. Load (+3.3V @ 250mA) 90 VIN = 10V DSM-5/2.65-3.3/3-D24 - Typical 5 VOUT Efficiency vs. Load (+3.3V @ 250mA) 90 VIN = 18V 85 85 Efficiency (%) VIN = 12V Efficiency (%) 80 80 VIN = 24V 75 VIN = 18V 75 VIN = 36V 70 70 65 65 60 0.3 0.5 0.8 1.1 1.3 1.6 1.9 2.1 2.4 2.7 +5V Output Current (Amps) DSM-5/2.65-3.3/3-D12 - Efficiency vs. Line and Load 88 87 86 Efficiency (%) Efficiency (%) 85 84 VOUT = 5V@2.65A/3.3V@0.25A 60 0.3 0.5 0.8 1.1 1.3 1.6 1.9 2.1 2.4 2.7 +5V Output Current (Amps) DSM-5/2.65-3.3/3-D24 - Efficiency vs. Line and Load 88 87 86 85 84 VOUT = 5V@2.65A/3.3V@0.25A 83 VOUT = 5V@1.5A/3.3V@2.25A 83 VOUT = 5V@1.5A/3.3V@2.25A 82 VOUT = 5V@0.25A/3.3V@3A 82 VOUT = 5V@0.25A/3.3V@3A 81 80 10 10.89 11.78 12.67 13.56 14.44 15.33 16.22 17.11 18 Input Voltage (Volts) 81 80 18 20 22 24 26 28 30 32 34 36 Input Voltage (Volts) 5 XWR Series 1 5 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S Typical Performance Curves D48 Models DSM-5/2.65-3.3/3-D48 - Typical 3.3 VOUT Efficiency vs. Load (+5V @ 250mA) 90 VIN = 36V D12, 24, 48 Models Start-Up from VIN (VIN = nominal, 5V @ 1.5A/3.3V @ 2.25A, 0.47F 100F tantalum output capacitors.) 85 VIN Efficiency (%) 80 75 VIN = 60V VIN = 48V VIN = 75V 5VOUT 70 3.3VOUT 65 60 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 +3.3V Output Current (Amps) 2msec/div DSM-5/2.65-3.3/3-D48 - Typical 5 VOUT Efficiency vs. Load (+3.3V @ 250mA) 90 VIN = 36V 85 Efficiency (%) 80 VIN = 60V VIN = 75V VIN = 48V 75 70 65 60 0.3 0.5 0.8 1.1 1.3 1.6 1.9 2.1 2.4 2.7 +5V Output Current (Amps) DSM-5/2.65-3.3/3-D48 - Efficiency vs. Line and Load 88 87 86 Efficiency (%) 85 84 VOUT = 5V@2.65A/3.3V@0.25A 83 VOUT = 5V@1.5A/3.3V@2.25A 82 VOUT = 5V@0.25A/3.3V@3A 81 80 36 40.3 44.7 49 53.3 57.7 62 66.3 70.7 75 Input Voltage (Volts) 1 5 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S DSM Models (R) (R) INNOVATION and EXCELLENCE ISO 9001 REGISTERED DS-0491 1/01 DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com DATEL (UK) LTD. Tadley, England Tel: (01256)-880444 DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01 DATEL GmbH Munchen, Germany Tel: 89-544334-0 DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025 DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark. 7 |
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