TECHNICAL DATASHEET Rev. B CMLV12S15-150 Low Voltage DC-DC Chassis Mount Converter 10-36 Vdc Input 15Vdc Output at 10A Half-Brick Package Features: Applications: Up to 88% Efficient Cost Efficient Solution Delivering 10A at Room Temperature with No Added Heat Sink with 400LFM Fixed Switching Frequency High Reliability Output Short Circuit Protection Output Over Current Protection Encapsulated for Added Ruggedness For use in 12V and 24V battery applications Remote ON/OFF For use in Intermediate and Distributed Bus Architectures (IBA) Remote Sense Compensation to 10% Vout Telecommunication equipment Fast Transient Response Network (LANs/WANs) Equipment 100% Burn In Next generation low voltage, high current microprocessors and Ics Soft Start Description: The CMLV12S15-150 is a high density, low input voltage, isolated converter on a chassis mount with a wide input voltage range. Low input voltage converters are uncommon in the industry and the CMLV12S15-150 offers the flexibility of operation with both 12V and 24V busses. This state-ofthe-art converter’s features include fast transient response, short circuit protection, over current protection, soft start, and many other features that are required for today’s demanding applications. (888) 597-WALL www.wallindustries.com 1 of 12 TECHNICAL DATASHEET Rev. B Technical Specifications CMLV12S15-150 Model No. CMLV12S15-150 All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION Related condition Min Nom Max Switching Frequency 400 INPUT (Vin) Operating Voltage Range 10 12 / 24 36 UVLO Turn On at 9.4 9.5 9.6 UVLO Turn Off at 9.3 9.4 9.5 Maximum Input Current Low Line 17.6 No Load Input Current No Load 0.15 Input Current under “Remote Off” 0.0064 Reflected Ripple Current 225 Input Surge Voltage 100 mS 50 85 EFFICIENCY OUTPUT (Vo) 14.85 15.15 Voltage Set Point ±RS shorted to ±Vo 15.0 -1% +1% 13.5 16.5 Voltage Adjustment Max Output limited to 150W 15.0 -10% +10% Load Regulation ±RS shorted to ±Vo 0.1 0.2 Line Regulation ±RS shorted to ±Vo 0.1 0.2 Temperature Drift 0.2 16.5 Remote Sense Compensation Max Output limited to 150W 10% Ripple 1µF Ceramic &10µF Tantalum 150 Spikes 1µF Ceramic &10µF Tantalum Current 0 10 Power Limited-Dependent upon SENSE Current Limit 13 compensation and TRIM adjustment Over Voltage Limit Output Clamped 1µF Ceramic & 10µF Tantalum DYNAMIC RESPONSE 50% to 100% Io, di/dt=1A/µS 200 Load step / V Recovery Time Recovery to within 1% Nominal Vo Turn On Delay From Vin (min) to Vout (nom) Turn On Overshoot Full Load Resistive 0 Hold Up Time From Vin (min) to VULVO_Turn_Off 0 REMOTE ON/OFF Active High Remote ON – Active High Min High (ON/OFF pin) 2.2 Remote ON – Active Low Max Low (ON/OFF pin) N/A Remote OFF – Active High Max Low (ON/OFF pin) 1.2 Remote OFF – Active Low Min High (ON/OFF pin) N/A Remote ON/OFF pin Floating – Active High Over Operating Voltage Range 2.5 5.0 Remote ON/OFF pin Floating – Active Low Over Operating Voltage Range N/A ION/OFF Sink to pull low – Active Low or High VON/OFF =0V, Vin=36V 0.38 ION/OFF Source to drive high – Active High VON/OFF =5V, Vin=36V 0.03 ION/OFF Source to drive high – Active Low VON/OFF =5V, Vin=36V Turn On Delay – Active High ON/OFF (max Low) to Vout (min) 9 Turn Off Delay – Active High ON/OFF (0V) to Vout (min) 160 ISOLATION Input-Output 1 minute 1500 Input-Case 1 minute 500 Output-Case 1 minute 500 THERMAL Ambient Max. Ambient limited by OTP -40 25 OTP Over Temperature Protection (OTP) Case Temperature Greater than 95 Turn On (OTP) Case Temperature Less than 85 Calculated Using Bellcore TR-332 Method 1 case 3 2,563,116 MTBF MECHANICAL See Figure 1 (888) 597-WALL www.wallindustries.com Unit kHz Vdc Vdc Vdc A A A mA Vdc % Vdc % Vdc % % % / °C Vdc % mVpk-pk mVpk-pk A A Vdc mV ms ms % mS Vdc Vdc Vdc Vdc Vdc Vdc mA mA mA ms µS Vdc Vdc Vdc °C °C °C hours Page 2 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B Figure 1: Mechanical Dimensions Unit inches [mm] NOTES: TO ORDER: 1. PIN TO PIN TOLERANCE ± 0.01 [±0.3], PIN DIAMETER TOLERANCE: ±0.005 [±0.13]. 2. CASE MATERIAL OF THE CONVERTER: Ø.040 [1.02] THICK, ALUMINUM ALLOY 3003-0, PER: QQA 250/2. 3. UNLESS OTHERWISE SPECIFIED. 4. UNIT COMES WITH EITHER 3M x 0.5 THREADED THRU INSERTS OR FOR Ø.125 THRU-HOLE FOR THE CHASSIS MOUNT BOARD ADD: “TH” SUFFIX TO MODEL PART NUMBER. EXAMPLE: CMLV12S15-150TH (888) 597-WALL www.wallindustries.com Page 3 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B DESIGN CONSIDERATIONS Under Voltage Lock Out (UVLO) The converter output is disabled until the input voltage exceeds the UVLO turn-on limit. The converter will remain ON until the input voltage falls below the UVLO turn-off limit. Over Current Protection The converter is protected from short circuit and over current conditions. During these fault conditions, the converter output will ‘hiccup’. The converter output will recover once the short or over current fault is removed. Over Temperature Protection (OTP) The converter has internal thermal protection that will shut the converter OFF once the case temperature exceeds the OTP turn-off limit. The converter will resume operation when the case temperature has dropped below the OTP turn-on limit. Output Filter No additional output capacitor is needed for the power supply to operate. However, to reduce the ripple and noise on the output, additional capacitance may be added. A 100µF Ceramic capacitor may be added across the +Vo and –Vo pins to reduce the ripple and spike noise. Additional capacitance in the form of a tantalum or aluminum electrolytic may also be placed across these pins in order reduce ripple and improve the transient peak-to-peak voltage deviation. Remote Sense To improve the regulation at the load, route the connections from the -RS and the +RS pins to the –Vo and +Vo connections at the load. This will force the converter to regulate the voltage at the load and not at the pins of the converter (refer to Graph 8). If it is not desired to use the Remote Sense feature, the –RS and +RS pins may be left open or they may be shorted to the -Vo and +Vo pins respectively. Shorting the RS pins to the Vo pins will reduce the voltage drops through the converter pins. Remote ON/OFF The converter has the ability to be remotely turned ON or OFF. The CMLV series is Active-High. Active-High means that a logic high at the ON/OFF pin will enable the supply (Figure 2). With Active-High, if the ON/OFF pin is left floating, the supply will be enabled. Figure 2: Active-High CMLV Series Converter (888) 597-WALL www.wallindustries.com Page 4 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B Output Voltage Trim: (5V, 12V, 15V, and 20V Models) The output is adjustable ±10% of rated output voltage. To trim the output voltage down, place the trim resistor between the Trim and -Rs pins (Figure 4). To trim the output voltage up, place the trim resistor between the Trim and +Rs pins (Figure 3). The value of the trim resistor with respect to the desired output voltage (Vo) can be derived from the following formulas, or looked up on the trim table (Table 2). Vonom U 1 R1 Vo R lim RTH Vo Vonom Vo Vonom R1 Vo RTL R1 Vo R lim Vonom Vo Figure 3: Trim Up (in Kohms) (in Kohms) Figure 4: Trim Down +Vout +Vout +Rs +Rs RTH Pins Facing Down Trim Rload Pins Facing Down Rload Trim RTL -Rs -Rs -Vout -Vout Table 2: Trim Equations for CMLV Series (5V, 12V, 15V, and 20V Models) Vonom 15.000 U1 2.500 Percent Trim 1% 2% 3% 4% 5% 6% 7% 8% 9% 10% Trim Low Vo RTL 14.850 500.78 14.700 245.28 14.550 160.11 14.400 117.53 14.250 91.98 14.100 74.95 13.950 62.78 13.800 53.66 13.650 46.56 13.500 40.88 (888) 597-WALL R1 5.11 Rlim RTH to +Rs 5.11 RTL to -Rs Trim High Vo RTH 15.150 2575.44 All in Kohms 15.300 1297.94 15.450 872.11 15.600 659.19 15.750 531.44 15.900 446.27 16.050 385.44 16.200 339.81 16.350 304.33 16.500 275.94 Note that while decreasing the output voltage, the maximum output current still remains at 10A, and while increasing the output voltage, the output current is reduced to maintain a total output power at 150 W. www.wallindustries.com Page 5 of 12 TECHNICAL DATASHEET Rev. B CMLV12S15-150 Paralleling Converters The CMLV series converters may be paralleled both for redundancy and for higher output current. However, in order to do this, a high-current, low Vf, schottky diode must be placed at the +Vo pin of each supply as shown in Figure 5. To improve sharing, tie the two TRIM pins together. The converters may be trimmed by adding a resistor value from Table 2 from each TRIM pin to ±RS pin, or alternatively, a single resistor of half the value of Table 2 from the common TRIM pins to the common ±RS pins. Figure 5: Paralleling Converters (888) 597-WALL www.wallindustries.com Page 6 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B Graph 1: CMLV12S15-150 Efficiency vs. Output Current 90% 89% 88% 87% 86% 85% 84% Efficiency (%) 83% 82% 81% 80% Vin=10V 79% Vin=12V 78% Vin=24V 77% Vin=30V 76% 75% 74% 73% 72% 71% 70% 0 2 4 6 8 10 Io (A) Graph 2: CMLV12S15-150 Max Ambient vs. Io (Vin=12V) 12 11 10 9 8 Io (A) 7 6 5 4 No Airflow 3 w ith 400lfm Air 2 1 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Ambient (°C) (888) 597-WALL www.wallindustries.com Page 7 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B Graph 4: CMLV12S15-150 Power Dissipation vs. Input Voltage 38 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Io=0A Io=1A Io=2A Io=4A Io=6A Io=8A Io=10A Io=1A Io=6A 35 Io=4A Io=10A 29 26 23 20 17 14 11 8 5 2 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Vin(V) Graph 5: CMLV12S15-150 Min Load Input Current and Power Dissipation vs. Input Voltage 2.500 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Vin(V) Graph 6: CMLV12S15-150 "Remote Off" Input Current and Power Dissipation vs. Input Voltage 5.9 0.016 0.500 Input Current Input Current 0.015 2.000 5.3 0.014 0.410 1.750 5.0 0.013 0.365 1.500 4.7 0.012 0.320 1.250 4.4 0.011 0.275 1.000 4.1 0.010 0.230 0.750 3.8 0.009 0.185 0.500 3.5 0.008 0.140 0.250 3.2 0.007 0.095 2.9 0.006 10 12 24 30 0.050 10 Vin(V) 0.455 Power Dissipation Pdissipation (W) 0.000 Pdissipation (W) 5.6 Power Dissipation Iin (A) 2.250 Iin (A) Io=2A Io=8A 32 Pdissipation (W) Iin (A) Graph 3: CMLV12S15-150 Input Current vs. Input Voltage 12 24 30 Vin(V) Note: Voltage measurements taken where the output pins are soldered into test board. (888) 597-WALL www.wallindustries.com Page 8 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B Graph 8: CMLV12S15-150 Load Regulation (+RS to +Vo, -RS to -Vo) 0.23% 0.22% 0.21% 0.20% 0.19% 0.18% 0.17% 0.16% 0.15% 0.14% 0.13% 0.12% 0.11% 0.10% 0.09% 0.08% 0.07% 0.06% 0.05% 0.04% 0.03% 0.02% 0.01% 0.00% Vin=10V Vin=12V Vin=24V Vin=30V Regulation (%) Regulation (%) Graph 7: CMLV12S15-150 Load Regulation (±RS Pins Open) 1 2 4 6 8 0.23% 0.22% 0.21% 0.20% 0.19% 0.18% 0.17% 0.16% 0.15% 0.14% 0.13% 0.12% 0.11% 0.10% 0.09% 0.08% 0.07% 0.06% 0.05% 0.04% 0.03% 0.02% 0.01% 0.00% Vin=10V Vin=12V Vin=24V Vin=30V 1 10 2 4 Io (A) Io=1A Io=2A Io=4A Io=6A Io=8A Io=10A 10 12 8 10 Graph 10: CMLV12S15-150 Line Regulation (±RS Pins Open) Regulation (%) Regulation (%) Graph 9: CMLV12S15-150 Line Regulation (+RS to +Vo, -RS to -Vo) 0.20% 0.19% 0.18% 0.17% 0.16% 0.15% 0.14% 0.13% 0.12% 0.11% 0.10% 0.09% 0.08% 0.07% 0.06% 0.05% 0.04% 0.03% 0.02% 0.01% 0.00% 6 Io (A) 24 0.20% 0.19% 0.18% 0.17% 0.16% 0.15% 0.14% 0.13% 0.12% 0.11% 0.10% 0.09% 0.08% 0.07% 0.06% 0.05% 0.04% 0.03% 0.02% 0.01% 0.00% 30 Io=1A Io=2A Io=4A Io=6A Io=8A Io=10A 10 12 24 30 Vin (V) Vin (V) Note: Voltage measurements taken where the output pins are soldered into test board. (888) 597-WALL www.wallindustries.com Page 9 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B TEST SETUP: The CMLV12S15-150 specifications are tested with the following configurations: Regulation and Efficiency Setup To ensure that accurate measurement are taken, the voltage measurements are taken directly at the terminal of the module. This minimizes errors due to contact and trace lengths between the load and the output of the supply. The following is a diagram of the test setup. Figure 6: Regulation and Efficiency Probe Setup Rtrace Rcontact +Vin +Vout Rcontact Vin Rtrace Rload Vout Rcontact Rtrace Rcontact Rtrace -Vout -Vin Output Ripple Voltage Setup The module is tested with a 1µF ceramic capacitor in parallel with a 10µF tantalum capacitor across the output terminals. Figure 7: Ripple Voltage Probe Setup SCOPE PROBE +Vout CMLV12S15-150 1F 10F Ceramic Rload Tantalum -Vout Input Reflected Ripple Current and Input Ripple Current Setup The module is tested for input reflected ripple current (Irrc) and input ripple current (Irc). The input ripple voltage is also measured at the pins with the following input filter. If there is a need to reduce input ripple current/voltage then additional ceramic capacitors can be added to the input of the converter. Figure 8: Ripple Current Setup Irrc SCOPE PROBE Irc 12 H +Vin Low Impedance Source (888) 597-WALL 6,800F 1F electrolytic capacitor ceramic capacitor CMLV12S15-150 -Vin www.wallindustries.com Page 10 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B Converter Thermal Consideration The converter is designed to operate without convective cooling if the derating curves are followed. The converter can operate at higher temperatures if airflow is applied. Airflow should be aligned lengthwise to the converter for optimum heat transfer. Contact Factory for derating curves. Figure 9: Airflow Orientation +Vin ON/OFF Pins Facing Down CMLV12S15-150 -Vin (888) 597-WALL +Vout -Vout www.wallindustries.com Page 11 of 12 TECHNICAL DATASHEET CMLV12S15-150 Rev. B Ordering Information Part Number Example: CMLV Series Designation 12 S 15 – 150 TH Nominal Input Voltage Single Output Nominal Output Voltage Maximum Output Power Options Blank TH Threaded Hole Through Hole Company Information: Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development engineers will provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2000 certification is just one example of our commitment to producing a high quality, well-documented product for our customers. Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss your future projects. Contact Wall Industries for further information: Phone: Toll Free: Fax: E-mail: Web: Address: (888) 597-WALL (603)778-2300 (888)587-9255 (603)778-9797 [email protected] www.wallindustries.com 5 Watson Brook Rd. Exeter, NH 03833 www.wallindustries.com Page 12 of 12