® ® PRELIMINARY INNOVATION and EXCELLENCE Dual Output Mixed Voltage, DSM Models Surface-Mount, 3.3V and 5V 15Watt, DC/DC Converters Features ■ 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 +100°C operating temperature ■ Input under and overvoltage shutdown ■ Output OVP, thermal shutdown 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 +100°C operation. These devices meet IEC950, UL1950 and EN6950 safety standards; CB reports are available on request. "D48" models are CE marked (meets LVD requirements). +5V OUTPUT +INPUT SWITCH CONTROL +3.3V OUTPUT –INPUT OUTPUT RETURN ON/OFF CONTROL (SYNC) PWM CONTROLLER OPTO ISOLATION UV & OV COMPARATORS REFERENCE & ERROR AMP THERMAL SHUTDOWN TRIM Figure 1. Simplified Schematic DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: [email protected] · Internet: www.datel.com 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 XWR Series Performance Specifications and Ordering Guide Model ➀ Output R/N (mVp-p) ➂ Input Regulation (Max.) VOUT (Volts) IOUT ➁ (Amps) Typ. Max. Line Load ➃ 5 2.65 40 75 ±1% ±2% 3.3 3 60 100 ±0.5% ±0.5% DSM-5/2.65-3.3/3-D12 DSM-5/2.65-3.3/3-D24 DSM-5/2.65-3.3/3-D48 5 2.65 40 75 ±1% ±2% 3.3 3 60 100 ±0.5% ±0.5% 5 2.65 40 75 ±1% ±2% 3.3 3 60 100 ±0.5% ±0.5% ➀ Typical at TA = +25°C under nominal line voltage and balanced "full-load" conditions (5V @ 1.5A/3.3V @ 2.25A). ➁ Any combination of 5V/3.3V rated IOUT current, not to exceed 15 Watts of output power. (See derating graphs.) ➂ Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 0.47µF ceramic in parallel with 100µF tantalum output capacitors. VIN Nom. (Volts) Range (Volts) IIN ➄ (mA) Min. Typ. Package (Case, Pinout) 12 10-18 70/1450 83% 86% C18A, P36 24 18-36 40/720 83% 86% C18A, P36 48 36-75 20/360 83% 86% C18A, P36 Efficiency ➃ Tested from 10% to 100% full load (other output at 10% full load). ➄ 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 Part Number Suffixes 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) V1 Nominal Output Voltage: 5 Volts I1 Maximum Output Current: 2.65 Amps 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 I2 Maximum Output Current: 3 Amps V2 Nominal Output Voltage: 3.3 Volts MEC A N I C A L S P E C I FI C A T I O N S 0.100 (2.54) 0.110 (2.79) 4 3 0.500 (12.70) 2 9 8 Case C18A 0.300 (7.62) 7 6 0.800 (20.32) 4 EQ. SP. @ 0.200 (5.08) 1.00 (25.40) 5 1 TOP VIEW 2.00 (50.80) 0.50 (12.70) METAL CASE 0.10 (2.54) 0.110 (2.79) 0.020 (0.51) 0.015 (0.38) INSULATED BASE 0.055 (1.40) 2 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 DSM Models 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/Functional Specifications Output (continued) Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀ Isolation Capacitance 470pF Input Isolation Resistance 100MΩ Current Limit Inception: 5V @ 95% VOUT (3.3V @ 0.25A) 3.3V @ 98.5% VOUT (5V @ 0.25A) 4-5.5 Amps 3-4 Amps Short Circuit Current: 5V Output 3.3V Output 5.5 Amps average, continuous current 3 Amps average, continuous current Overvoltage Protection: 5V Output 3.3V Output Magnetic feedback TBD Volts TBD Volts Input Voltage Range: D12 Models D24 Models D48 Models 10-18 Volts (12V nominal) 18-36 Volts (24V nominal) 36-75 Volts (48V nominal) Overvoltage Shutdown: D12 Models D24 Models D48 Models 19-23 Volts (21V nominal) 37-42 Volts (40V typical) 77-81 Volts (78.5V typical) Start-Up Threshold: D12 Models D24 Models D48 Models 9-10 Volts (9.3V typical) 16.5-18 Volts (17V typical) 34-36 Volts (35V typical) Undervoltage Shutdown: D12 Models D24 Models D48 Models Maximum Capacitive Loading: D12 Models D24 Models D48 Models TBD µF (5V) TBD µF (5V) TBD µF (5V) 7.0-8.5 Volts (8V typical) 16-17 Volts (16.5V typical) 32.5-35.5 Volts (34.5V typical) Temperature Coefficient ±0.02% per °C Input Current: Normal Operating Conditions Standby Mode: Off, OV, UV, Thermal Shutdown Dynamic Characteristics See Ordering Guide 10mA Input Reflected Ripple Current: Source Impedance D12 Models D24/D48 Models <0.1Ω, no external input filtering TBD TBD Internal Input Filter Type Capacitive (1.5µF) Reverse-Polarity Protection: D12 Models D24 Models D48 Models 1 minute duration, 4A maximum 1 minute duration, 2A maximum 1 minute duration, 1A maximum On/Off Control: (Pin 3): ➂ ➃ ➅ Dynamic Load Response: ➁ 5V (50-100% step to 97.5% VOUT) 3.3V (50-100% step to 98.5% VOUT) 300µsec maximum (3.3V @ 0.25A) 300µsec maximum (5V @ 0.25A) Start-Up Time: VIN to VOUT On/Off to VOUT 10msec maximum TBD msec maximum Switching Frequency 250kHz (±25kHz) Environmental On = open or 13V - +VIN, IIN @ 13V = 800µA Off = 0-0.8V, IIN @ 0V = 1mA Sync: (Option, Pin 4): ➂ ➃ Input Threshold (Rising Edge Active) Input Voltage Low Input Voltage High Input Resistance Output High Voltage (100µA load) Output Drive Current Input/Output Pulse Width TBD µF (3.3V) TBD µF (3.3V) TBD µF (3.3V) 1-2.7 Volts 0-0.9 Volts 2.8-5 Volts 35kΩ minimum 3.5-4.8 Volts 35mA 160-360nsec MTBF: ➆ D12 Models D24 Models D48 Models TBD hours TBD hours TBD hours Operating Temperature: (Ambient): ➁ Without Derating: With Derating +60°C To +100°C (See Derating Curves) Case Temperature: Maximum Operational For Thermal Shutdown +100°C TBD °C minimum, TBD°C maximum Storage Temperature –40 to +120°C Physical Dimensions 2" x 1" x 0.52" (50.8 x 25.4 x 13.2mm) Internal Case Connection Case connection via pin 4 Case Material Corrosion resistant steel with non-conductive, epoxy-based, black enamel finish and plastic baseplate Output VOUT Accuracy: 5V Output 3.3V Output ±2% maximum ±1.5% maximum Pin Material Brass, solder coated, surface-mount leads Weight TBD ounces 1.4 ounces (39.7 grams) Minimum Loading Per Specification 250mA Primary to Secondary Insulation Level Operational Minimum Load For Stability No load Ripple/Noise (20MHz BW) ➄ See Ordering Guide Line/Load Regulation See Ordering Guide Efficiency See Ordering Guide / Efficiency Curves Cross Regulation: 5V Output ([email protected], [email protected]) 3.3V Output ([email protected], [email protected]) TBD Trim Range ➁ ±5% Isolation Voltage: Input-to-Output Input-to-Case Output-to-Case 1500Vdc minimum TBD Vdc minimum TBD Vdc minimum ➀ Balanced "full-load" is 5V @ 1.5A/3.3V @ 2.25A. All models are specified with external 0.47µF ceramic and 100µF tantalum output capacitors. ➁ See Technical Notes/Graphs for details. ➂ The On/Off Control function can be replaced with a Sync function. See Part Number Suffixes and Technical Notes for details. ➃ Applying a voltage to On/Off Control (pin 3) when no input power is applied to the converter can cause permanent damage. ➄ Output noise may be further reduced with the installation of additional external output capacitors. See Technical Notes. ➅ 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). ➆ Demonstrated MTBF available on request. ➇ For conditions with less than minimum loading, outputs remain stable. However, regulation performance will degrade. TBD 3 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 XWR Series Absolute Maximum Ratings 1 Input Voltage: Continuous: +5V OUTPUT +INPUT 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 Reverse-Polarity Protection: ➁ D12 Models D24 Models D48 Models Output Current ➁ +5V LOAD 2 OUTPUT RETURN –INPUT 3 5 ON/OFF CONTROL 7 +3.3V LOAD 4 +3.3V OUTPUT 8 CASE TRIM Input Current must be limited. 1 minute duration. Fusing recommended. 4 Amps 2 Amps 2 Amps RTDOWN (kΩ) = Current limited. Devices can withstand an indefinite output short circuit. On/Off Control (Pin 3) Max. Voltages: Referenced to –Input (pin 2) No Suffix S Suffix +VIN +5.7 Volts Storage Temperature –40 to +120°C Lead Temperature (Soldering, 10 sec.) +300°C 9 R TRIM DOWN 2.49(VO – 1.234) 3.3 – VO –16.9 Figure 3. Decrease Output Voltage Trim Connections Using A Fixed Resistor 1 +5V OUTPUT +INPUT 5 +5V LOAD 2 OUTPUT RETURN –INPUT 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. 3 ON/OFF CONTROL 7 +3.3V LOAD 4 +3.3V OUTPUT 8 CASE TRIM 9 R TRIM UP TECHNICAL NOTES Figure 4. Increase Output Voltage Trim Connections Using A Fixed Resistor 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. RT UP (kΩ) = Output Power vs. Ambient Temperature VIN = Nominal, Natural Convection Air flow 16 14 Trim adjustments greater than 5% can have an adverse effect on the converter's performance and is not recommended. 5 +5V LOAD 2 –INPUT 3 +5V OUTPUT 12 Output Power (Watts) +INPUT OUTPUT RETURN ON/OFF CONTROL 4 +3.3V OUTPUT 20kΩ 5-22 Turns 8 6 2 +3.3V LOAD 0 –40 CASE TRIM 10 4 7 8 –16.9 Accuracy of adjustment is subject to tolerances or resistor values and factory-adjusted output accuracy. VO = desired output voltage. 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. 1 3.073 VO – 3.3 9 0 25 30 35 40 45 50 55 60 65 70 Ambient Temperature (˚C) Figure 2. Trim Connections Using A Trimpot 4 75 80 85 90 95 100 DSM Models 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 D12 Models D24 Models DSM-5/2.65-3.3/3-D24 - Typical 3.3 VOUT Efficiency vs. Load (+5V @ 250mA) DSM-5/2.65-3.3/3-D12 - Typical 3.3 VOUT Efficiency vs. Load (+5V @ 250mA) 90 90 VIN = 18V 85 85 80 80 Efficiency (%) Efficiency (%) VIN = 10V VIN = 12V 75 VIN = 18V VIN = 24V 75 VIN = 36V 70 70 65 65 60 60 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 0.3 3 0.6 0.9 DSM-5/2.65-3.3/3-D12 - Typical 5 VOUT Efficiency vs. Load (+3.3V @ 250mA) 1.8 2.1 2.4 2.7 3 90 VIN = 10V VIN = 18V 85 85 80 Efficiency (%) Efficiency (%) 1.5 DSM-5/2.65-3.3/3-D24 - Typical 5 VOUT Efficiency vs. Load (+3.3V @ 250mA) 90 VIN = 12V 75 VIN = 18V 70 65 80 VIN = 24V 75 VIN = 36V 70 65 60 60 0.3 0.5 0.8 1.1 1.3 1.6 1.9 2.1 2.4 2.7 0.3 0.5 0.8 +5V Output Current (Amps) 1.1 1.3 1.6 1.9 2.1 2.4 2.7 34 36 +5V Output Current (Amps) DSM-5/2.65-3.3/3-D24 - Efficiency vs. Line and Load DSM-5/2.65-3.3/3-D12 - Efficiency vs. Line and Load 88 88 87 87 86 86 Efficiency (%) Efficiency (%) 1.2 +3.3V Output Current (Amps) +3.3V Output Current (Amps) 85 84 VOUT = [email protected]/[email protected] 83 85 84 VOUT = [email protected]/[email protected] 83 VOUT = [email protected]/[email protected] VOUT = [email protected]/[email protected] 82 82 VOUT = [email protected]/3.3V@3A VOUT = [email protected]/3.3V@3A 81 81 80 80 10 10.89 11.78 12.67 13.56 14.44 15.33 16.22 17.11 18 18 20 22 24 26 28 30 Input Voltage (Volts) Input Voltage (Volts) 5 32 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 XWR Series Typical Performance Curves D48 Models D12, 24, 48 Models DSM-5/2.65-3.3/3-D48 - Typical 3.3 VOUT Efficiency vs. Load (+5V @ 250mA) Start-Up from VIN (VIN = nominal, 5V @ 1.5A/3.3V @ 2.25A, 0.47µF 100µF tantalum output capacitors.) 90 VIN = 36V 85 Efficiency (%) VIN 80 75 5VOUT VIN = 60V VIN = 75V VIN = 48V 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 Efficiency (%) 85 80 VIN = 60V 75 VIN = 75V VIN = 48V 70 65 60 0.3 0.5 0.8 1.1 1.3 1.6 1.9 2.1 2.4 2.7 70.7 75 +5V Output Current (Amps) DSM-5/2.65-3.3/3-D48 - Efficiency vs. Line and Load 88 87 Efficiency (%) 86 85 84 VOUT = [email protected]/[email protected] 83 VOUT = [email protected]/[email protected] 82 VOUT = [email protected]/3.3V@3A 81 80 36 40.3 44.7 49 53.3 57.7 62 Input Voltage (Volts) 66.3 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 ® INNOVATION and EXCELLENCE ISO 9001 REGISTERED DS-0491 1/01 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 München, Germany Tel: 89-544334-0 DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025 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: [email protected] 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