Corporate: www.cdtechno.com OBSOLETE PRODUCT SLC100 Contact factory for replacement model 40 Amp Single Output Quarter Brick DC/DC Converter ● Industry Standard Footprint & Size 2.28” x 1.45” ● High Efficiency ● Wide Input Voltage Range: 36 – 75VDC ● Output Voltages: 1.0V,1.2 V, 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5.0V & 12V ● Output VoltageTrim Function ● Remote Sense for output compensation ● Remote ON/OFF control referenced to input side (Positive or Negative Logic) ● Output Current Limit ● No Minimum Load Requirement The SLC100 Series is a 40 Amp single output, low-profile DC-DC converter in an industry standard package of 2.28” x 1.45” x 0.40”. The SLC100 uses unique proprietary technologies to deliver ultrahigh efficiencies and excellent thermal performance. It includes extensive control and protection features for maximum flexibility and provides a versatile solution for a whole range of ● SMD Models with Position PerfectTM Interconnects ● Isolation Voltage of 2000 VDC ● Fixed Frequency Operation ● UL/CUL 60950 recognized (US & Canada), basic insulation rating ● Meets TNV-SELV Isolation Requirements ● Meets Conducted Emissions Requirements of FCC Class B and EN55022 Class B with External Filter ● No Heatsink Required ● Thermal Shutdown ● Input Undervoltage Lockout applications with its input voltage range of 36-75 VDC and output voltages between 1.0VDC and 12.0VDC. The power dissipation of the SLC100 series is so low that a heat sink is not required. Thermal derating curves are provided indicating maximum allowable output current versus airflow and ambient temperature. The product features fast dynamic response characteristics and low output ripple critical for low voltage applications. SLC DC-DC converter modules are certified to UL/CUL 60950, and VDE to EN60950. It meets CISPR22/ EN55022/FCC15J Class B specs for EMI levels with external filtering. This high quality and highly reliable product is competitively priced and an ideal solution for distributed power, telecoms and datacom applications. PRODUCT SELECTION CHART MODEL SLC100 SLC100 SLC100 SLC100 SLC100 SLC100 SLC100 SLC100 SLC100 NOMINAL INPUT VOLTAGE (VDC) 48 48 48 48 48 48 48 48 48 RATED OUTPUT VOLTAGE (VDC) 1.0 1.2 1.5 1.8 2.0 2.5 3.3 5.0 12.0 OUTPUT CURRENT MIN RATED LOAD(A) OUTPUT (A)1 0.0 40 0.0 40 0.0 40 0.0 40 0.0 40 0.0 40 0.0 30 0.0 20 0.0 8.3 INPUT CURRENT AT RATED LOAD (A) (48Vin) TBD 1.80 2.20 TBD TBD TBD TBD TBD TBD EFFICIENCY (%) TYPICAL TBD 80 82 TBD TBD TBD TBD TBD TBD * Note 1: Maximum output current for SMD Models is 25A. Product: www.cdpoweronline.com SLC100 Rev B 5/2004 1 ABSOLUTE MAXIMUM RATINGS, ALL MODELS PARAMETER Input Voltage-Operating Input Voltage-Operating CONDITIONS MIN TYP Continuous Transient (100 mS) Operating Ambient Temperature -40 Storage Temperature -40 Output Short Circuit Duration MAX UNITS 75 VDC TBD VDC +100 °C +125 °C +300 °C Continuous Lead Temperature (Soldering, 10 sec max) COMMON ELECTRICAL SPECIFICATIONS, ALL MODELS Specifications are at TA = +25°C, Airflow = 300LFM (1.5m/s) at nominal input voltage unless otherwise specified. PARAMETER CONDITIONS MIN TYP 36 48 MAX UNITS COMMON ELECTRICAL SPECIFICATIONS INPUT Voltage Range 75 VDC ISOLATION Capacitance Resistance VDC 2000 Input/Output Isolation Voltage Input to Output Input to Output pF 2000 MW 10 FEATURES Turn On Time Output to within 1% of Vnom -10 5 +10 +120 +140 Remote Sense Compensation Output Voltage Trim Range 5.00 mS % of VNOM % of VNOM Output Over Voltage Protection % of VNOM Over Temperature Shutdown Shutdown TBD °C Turn On TBD °C Input Under Voltage Protection Turn Off Turn Off Lockout Hysteresis Voltge 31.50 32.50 0 32.50 VDC 33.70 VDC 2.2 VDC ON/OFF Logic Function mA Logic Low Ion/off Logic Low Von/off TBD Logic High Ion/off 0.8 Logic High Von/off Open Collector TBD VDC μA VDC GENERAL Switching Frequency MTTF (per Telcordia TR-NWT-000332) TBD 200 TBD KHz Hrs 2 MECHANICAL (THROUGH HOLE) PIN FUNCTIONS 1 2 3 4 5 6 7 8 +Vin Remote On/Off -Vin -Vout - Sense Trim + Sense +Vout NOTES: General Tolerance; ±.015 Pin Locations/Diameters: ±.005 Dimensions are in inches [Millimeters] Pin material: Copper Pin Finish: Matte Tin over Nickel Converter weight: [30.8g] UL/TUV Standards require a clearance greater than 0.06” between input and output for Basic insulation. This should be considered if copper traces are used on the top side of the board under the converter unit. Ferrite cores are considered part of the input/primary circuit. MECHANICAL (SMT) Interconnect FUNCTIONS 1 2 3 4 5 6 7 8 +Vin Remote On/Off -Vin -Vout - Sense Trim + Sense +Vout NOTES: General Tolerance; ±.015 Interconnect Locations/ Diameters: ±.005 Dimensions are in inches [Millimeters] Pin material: Copper Pin Finish: Matte Tin over Nickel Converter weight: [30.8g] UL/TUV Standards require a clearance greater than 0.06” between input and output for Basic insulation. This should be considered if copper traces are used on the top side of the board under the converter unit. Ferrite cores are considered part of the input/primary circuit. * Interconnect co-planarity within 0.004” SLC100 Rev B 5/2004 3 ORDERING INFORMATION MODEL NUMBER SLC100 - 1 SLC100 - 2 SLC100 - 3 SLC100 - 4 SLC100 - 5 SLC100 - 6 SLC100 - 7 SLC100 - 8 SCL100 - 9 SLC100 - 10 SLC100 - 11 SLC100 - 12 SLC100 - 13 SLC100 - 14 SLC100 - 15 SLC100 - 16 SLC100 - 17 SLC100 - 18 Vout (Vdc) 1.0 1.2 1.5 1.8 2.0 2.5 3.3 5.0 12.0 1.0 1.2 1.5 1.8 2.0 2.5 3.3 5.0 12.0 PINOUT Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole SMD SMD SMD SMD SMD SMD SMD SMD SMD LOGIC Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive MODEL NUMBER SLC100 - 19 SLC100 - 20 SLC100 - 21 SLC100 - 22 SLC100 - 23 SLC100 - 24 SLC100 - 25 SLC100 - 26 SCL100 - 27 SLC100 - 28 SLC100 - 29 SLC100 - 30 SLC100 - 31 SLC100 - 32 SLC100 - 33 SLC100 - 34 SLC100 - 35 SLC100 - 36 Vout (Vdc) 1.0 1.2 1.5 1.8 2.0 2.5 3.3 5.0 12.0 1.0 1.2 1.5 1.8 2.0 2.5 3.3 5.0 12.0 PINOUT Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole SMD SMD SMD SMD SMD SMD SMD SMD SMD LOGIC Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative 4 APPLICATION NOTES When using remote sense with dynamic loads, the transient response at the point of load may be limited by the inductance present in the power lines. Severe load steps may require the addition of a capacitor CL across the output lines. When the load demands an immediate increase in load current, this capacitor helps to supply a portion of the current and reduces the burden on the converter. Remote Sense The remote sense feature of the SLC100 can be used to compensate for voltage drops in the output power lines by sensing output voltage directly at the point of load. To enable this feature, connect the +Sense and –Sense pins to the +Vout and –Vout pins, respectively, at the point in the circuit where the tightest regulation is required (Figure 1). The sense leads conduct very little current compared with the power leads and therefore provide a more accurate indication of load voltage for regulation purposes. This enables the converter to increase (or decrease) its output voltage to compensate for any load distribution losses, allowing for a more precise load voltage. Refer to the product data sheet for the maximum output voltage compensation range of + Sense - Vin If remote sensing is not desired then +Sense and -Sense must be tied to their respective outputs for proper operation. + Vout + Vin ON/OFF When the load is physically distanced from the converter, the inductance of the power leads, and any bypass conductance at the load, can result in increased phase shift in the converter’s feedback loop, causing instability. This situation can be eliminated by inserting bypass capacitors (CB) from the outputs to the sense leads directly at the output pins. These capacitors decouple any AC on the power lines and assure that only the DC voltage is sensed. SLC100 Trim (Top View) - Sense - Vout CB • CL Load CB • Figure 1 – Remote Sensing In general, the line resistance, or load drop, between the output pins of the converter and load should be minimized. Using remote sense, a large line resistance, with a regulated load voltage, will result in a higher output voltage at the output of the DC/DC Converter. To prevent exceeding the converter’s output power limits, a higher output voltage will require a reduction in the maximum allowable output current in accordance with the voltage/current power relationship. To minimize the line resistance between the converter and the load, the converter should be placed as close to the load as possible. Line resistance can further be decreased by using heavy gauge wire or by increasing the cross sectional area of the PC board traces. Output Voltage Trim The SLC100’s output voltage may be adjusted high or low by an amount indicated on the product data sheet. As shown in Figure 2, to raise the converter’s output voltage a resistor must be placed between the Trim pin and +Vout pin. SLC100 Rev B + Vout + Vin + Sense ON/OFF - Vin SLC100 Trim (Top View) - Sense RT Load - Vout Figure 2 – Trim Up Circuit 5/2004 5 APPLICATION NOTES Remote ON/OFF Function To lower the converter output voltage a resistor must be placed between the Trim pin and -Vout pin as shown in Figure 3. + Vout + Vin + Sense ON/OFF SLC100 Trim (Top View) - Sense Load RT - Vout - Vin Figure 3 – Trim Down Circuit The resistance value required to achieve the desired amount of positive/negative trim can be determined by referring to the trim table for each model. If trimming is not desired then the Trim pin may be left open. In addition to the resistor values provided in the trim tables, the following equations can be use to calculate the required resistor value for a desired output voltage. These equations apply for the 1.5V and above models. For 1.2V models the trim tables must be used. Remote ON/OFF Control Function The SLC100 is equipped with a primary ON/OFF pin used to remotely turn the converter on or off via a system signal. The input is TTL open-collector and/or FET opendrain compatible. For the positive logic model a system logic low signal will turn the unit off. For negative logic models a system logic high signal will turn the converter off. For negative logic models where no control signal will be used the ON/OFF pin should be connected directly to –Vin to ensure proper operation. For positive logic models where no control signal will be used the ON/OFF pin should be left open. + Vout + Vin + Sense ON/OFF SLC100 (Top View) - Vin Trim - Sense - Vout Control Signal Protective Functions Temperature Shutdown The over temperature shutdown feature of the SLC100 will cause the unit to shutdown at a typical pwb temperature of TBD. This protective feature is comprised of a thermistor in the units control loop. At a temperature of TBD this circuit will cause the PWM to go into an idle mode, resulting in no output from the converter and preventing damage to the converter components. When the temperature of the unit drops below TBD the fault condition will clear and the converter will resume normal operation. If the cause of the over temperature condition is not identified and corrected the unit will continue to cycle on and off indefinitely. Input Under-Voltage Shutdown The nominal input voltage for the SLC100 is 48Vdc. Once turned on reducing the input voltage to 32.5 Vdc nominal will shut down the device. At an input voltage less than 32.5V the under-voltage sensing circuit will send a signal to the PWM causing it to go into idle mode. This will result in no output from the converter, protecting the unit from a high input current condition. When the input voltage returns to a level above 32.5V the unit will return to normal operation. The unit will typically turn on at an input voltage of 33.7V nominal as indicated on the Product Data Sheet. This is due to hysterisis designed into the protective circuit to prevent excessive cycling of the converter. Brick Wall Current Limiting To protect against fault or short-circuit conditions on the output, each module is equipped with current-limiting circuitry designed to provide continuous protection. After reaching the current limit point (typically 20% above the rated output current), the voltage will range between its rated value and zero, depending upon the amount of overload. The unit will remain in operation continuously during this period down to a short-circuit condition. Once the short or overload has been eliminated, the output voltage will return to normal without cycling the input power. Figure 4 – Remote ON/OFF Control Circuit 6 APPLICATION NOTES Output Over-Voltage Protection Start-Up, ON/OFF and Transient Response The SLC100 has an output over voltage protection (OVP) circuit which monitors its own output voltage. If the output voltage of the converter exceeds between 120% and 140% of the nominal rating, the OVP circuit will shut down the converter. Once the OVP has been tripped the unit will need to be reset by cycling the input power or by toggling the ON/OFF power before normal operation can resume. For each model, waveforms are provided showing output voltage response and timing of input voltage power up/down, remote ON/OFF state change and load current transient responses. Output voltage transient responses are provided for step load changes of 50% to 75% & 75% to 50% of rated load current. Waveforms for each SLC100 units with a non-latching OVP feature are available on request. Please contact the factory for further details. Efficiency Performance Safety The SLC100 meets safety requirements per UL/CUL 60950 and VDE EN60950, basic insulation rating. EMC/EMI Considerations Efficiency data for each model was determined as a function of both load current and input voltage. Efficiency vs. Input Voltage was measured at full load, ambient temperature of 25oC and airflow of 300LFM. Efficiency vs. Load Current was measured at 25oC, a nominal input voltage of 48Vdc and airflow of 300LFM. Graphs are provided for each model in their respective Analysis pending. Performance Characterization Thermal Derating Maximum output current vs. ambient temperature at various airflow rates has been determined for each model of the SLC100. Each model was analyzed over an ambient temperature range of 0 to 85oC and at air flows up to 600LFM. Temperature limits for thermal derating curves were TBD C for semiconductor junction temperature and TBD C for board temperature. SLC100 Rev B 5/2004 7 SLC100 1.2VOUT ELECTRICAL SPECIFICATIONS Specifications are at TA = +25°C, Airflow = 300LFM (1.5m/s) at nominal input voltage unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS INPUT INPUT Maximum Input Current Inrush Charge Reflected Ripple Current Input Voltage Ripple Rejection No Load Input Current Full Load; Vin = 36Vdc Vin = 75Vdc Full Load, XXMhz Bandwidth Full Load (100Hz-1KHz) 1.80 A 0.180 mC TBD No Load Disabled Input Current 55 dB mA 3.0 mA 2 mA 7 A Quiescent Input Current Recommended Input Fuse mApk-pk -30 Fast blow external fuse OUTPUT Voltage Setpoint OUTPUT Voltage Range 1.182 Over all conditions of line, load and temperature 1.2 1.218 TBD Vdc Vdc TBD 0.05 0.10 % of Vnom Load Regulation 0.25 0.50 % of Vnom Output Ripple 100 120 mVpk-pk Line Regulation Output Current Range 0 401 Output Current Limit Inception 44 48 Efficiency Transient Response 80 50% to 75% Load Step at di/dt A A % TBD =0.1 A/mS; Cext =TBD Peak Deviation TBD mV Settling Time TBD mS 50,000 48 mF W External Load Capacitance Rated Power * Note 1: Maximum output current for SMD Models is 25A. 8 SLC100 1.5VOUT ELECTRICAL SPECIFICATIONS Specifications are at TA = +25°C, Airflow = 300LFM (1.5m/s) at nominal input voltage unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS INPUT Maximum Input Current Full Load; Vin = 36Vdc 2.20 A Vin = 75Vdc 0.180 mC Full Load, XXMhz Bandwidth TBD INPUT Inrush Charge Reflected Ripple Current Input Voltage Ripple Rejection Full Load (100Hz-1KHz) No Load Input Current Disabled Input Current -30 dB mA 75 No Load 3.0 mA 2 mA 7 A 1.520 Vdc Quiescent Input Current Recommended Input Fuse mApk-pk Fast blow external fuse OUTPUT Voltage Setpoint OUTPUT Voltage Range 1.490 Over all conditions of line, load and temperature 1.5 TBD Vdc TBD Line Regulation 0.05 0.10 % of Vnom Load Regulation 0.25 0.50 % of Vnom 100 mVpk-pk Output Ripple Output Current Range 0 Output Current Limit Inception 44 Efficiency 82 Transient Response 50% to 75% Load Step at di/dt 1 40 A 48 A % TBD =0.1 A/mS; Cext =TBD Peak Deviation TBD mV Settling Time TBD mS 50,000 48 mF W External Load Capacitance Rated Power * Note 1: Maximum output current for SMD Models is 25A. Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 USA: Mansfield (MA), Tel: (508) 339 3000, email: [email protected] Canada: Toronto, Tel: (866) 740 1232, email: [email protected] UK: Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected] France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected] Germany: München, Tel: +49 (0)89-544334-0, email: [email protected] Japan: Tokyo, Tel: 3-3779-1031, email: [email protected] Osaka, Tel: 6-6354-2025, email: [email protected] China: Shanghai, Tel: +86 215 027 3678, email: [email protected] Guangzhou, Tel: +86 208 221 8066, email: [email protected] www.murata-ps.com email: [email protected] ISO 9001 & ISO 14001 REGISTERED Murata Power Solutions, Inc. 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. © 2009 Murata Power Solutions, Inc. Singapore: Parkway Centre, Tel: +65 6348 9096, email: [email protected] 9