Corporate: www.cdtechno.com Corporate: www.cdtechno.com Product: www.cdpoweronline.com SLC100 1.2V 40 Amp Single Output Quarter Brick DC/DC Converter ● Industry Standard Footprint & Size 2.28” x 1.45” ● SMD Models with Position PerfectTM Interconnects ● High Efficiency ● Isolation Voltage of 2000 VDC ● Wide Input Voltage Range: 36 – 75VDC ● Fixed Frequency Operation ● Series Output Voltage: 1.0V, 1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5.0V & 12V ● UL/CUL 60950 recognized (US & Canada), VDE EN60950, basic insulation rating ● Output VoltageTrim Function ● Meets TNV-SELV Isolation Requirements ● Remote Sense for output compensation ● Meets Conducted Emissions Requirements of FCC Class B and EN55022 Class B with External Filter ● Remote ON/OFF control referenced to input side (Positive or Negative Logic) ● No Heatsink Required ● Output Current Limit ● Thermal Shutdown ● No Minimum Load Requirement ● Input Undervoltage Lockout ISO9001 CERTIFIED 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 ultra-high efficiencies and excellent thermal performance. It includes extensive control and protection features for maximum flexibility and satisfies the power requirements for a whole range of 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 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 SLC100-2,11,20,29 NOMINAL INPUT VOLTAGE (VDC) 48 RATED OUTPUT VOLTAGE (VDC) 1.2 OUTPUT CURRENT MIN RATED LOAD(A) OUTPUT (A)1 0.0 40 INPUT CURRENT AT RATED LOAD (A) (48Vin) 1.30 EFFICIENCY TYPICAL (%) 80 * Note 1: Maximum output current for SMD Models is 25A. Product: www.cdpoweronline.com SLC100 1.2V Rev C 11/2004 1 ABSOLUTE MAXIMUM RATINGS, ALL MODELS PARAMETER Input Voltage-Operating Input Voltage-Operating CONDITIONS MIN TYP Continuous Transient (100 mS) MAX UNITS 75 VDC 100 VDC Operating Ambient Temperature -40 85 °C Storage Temperature -40 +125 °C +300 °C Output Short Circuit Duration 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 MAX UNITS 36 48 75 VDC INPUT Voltage Range ISOLATION COMMON ELECTRICAL SPECIFICATIONS Input/Output Isolation Voltage 2000 Capacitance Input to Output Resistance Input to Output VDC 2000 pF 10 MΩ FEATURES Turn On Time Output to within 1% of Vnom 5.00 mS 5 % of VNOM -10 +10 % of VNOM +120 +140 % of VNOM Remote Sense Compensation Output Voltage Trim Range Output Over Voltage Protection Over Temperature Shutdown Shutdown Internal Monitor Point 135 °C Turn On Internal Monitor Point 125 °C Input Under Voltage Protection Turn Off 30.70 32.00 VDC Turn On 33.30 34.50 VDC 1.30 2.50 VDC 0.4 VDC Logic High Ion/off 1.0 μA Logic High Von/off Open Collector Lockout Hysteresis Voltage ON/OFF Logic Function Logic Low Ion/off 360 μA Logic Low Von/off GENERAL Switching Frequency 200 MTTF (per Telcordia TR-332) Product: www.cdpoweronline.com 1,497,000 SLC100 1.2V Rev C 11/2004 KHz Hrs 2 MECHANICAL (THROUGH HOLE) PIN FUNCTIONS .400 [10.16] 2x, Ø080 [2.03] 6x, Ø.060 [1.52] .197 [5.00] .052 [1.32] .037 [0.94] 6x, Ø.040 [1.02] 2x, Ø.060 [1.52] 1.450 [36.83] 1.025 [26.04] 3 4 1.025 [26.04] 5 .725 [18.42] 2 .425 [10.80] 1 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] .875 [22.23] 6 .725 [18.42] 7 .575 [14.61] 8 .425 [10.80] UL/TUV Standards require a clearance greater than 0.04” 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. 2.140 [54.36] BOTTOM VIEW (PIN SIDE) 2.280 [57.91] .140 [3.56] .000 [0.00] .000 [0.00] MECHANICAL (SMT) Interconnect FUNCTIONS .400 [10.16] 6x, Ø.060 [1.52] .052 [1.32] .037 [0.94] 2x, Ø.080 [2.03] 1.450 [36.83] 1.025 [26.04] 3 4 1.025 [26.04] 5 .725 [18.42] .575 [14.61] 8 1 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] .725 [18.42] 7 .425 [10.80] +Vin Remote On/Off -Vin -Vout - Sense Trim + Sense +Vout .875 [22.23] 6 2 1 2 3 4 5 6 7 8 .425 [10.80] UL/TUV Standards require a clearance greater than 0.04” 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. .000 [0.00] Product: www.cdpoweronline.com 2.280 [57.91] 2.140 [54.36] .140 [3.56] .000 [0.00] * Interconnect co-planarity within 0.004” BOTTOM VIEW (PIN SIDE) SLC100 1.2V Rev C 11/2004 3 ORDERING INFORMATION MODEL NUMBER SLC100 - 1 SLC100 - 2 SLC100 - 3 SLC100 - 4 SLC100 - 5 SLC100 - 6 SLC100 - 7 SLC100 - 8 SLC100 - 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 Product: www.cdpoweronline.com 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 SLC100 - 27 SLC100 - 28 SLC100 - 29 SLC100 - 30 SLC100 - 31 SLC100 - 32 SLC100 - 33 SLC100 - 34 SLC100 - 35 SLC100 - 36 SLC100 1.2V Rev C 11/2004 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 Operation 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 the sense function. 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. 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 de-couple any AC on the power lines and assure that only the DC voltage is sensed. If remote sensing is not desired then +Sense and -Sense must be tied to their respective outputs for proper operation. • • Output Voltage Trim Figure 1 – Remote Sensing Circuit 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. Product: www.cdpoweronline.com 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. Figure 2 – Trim Up Circuit SLC100 1.2V Rev C 11/2004 5 Remote ON/OFF Function APPLICATION NOTES To lower the converter output voltage a resistor must be placed between the Trim pin and -Vout pin as shown in Figure 3. Figure 4 – Remote ON/OFF Control Circuit Protective Functions 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. ( ) Rtrim_UP = 5.11V out (100+∆%) - 511 - 10.22 kΩ Vref ∆% ∆% Vref=1.225 [ [ The over temperature shutdown feature of the SLC100 will cause the unit to shutdown at a typical pwb internal monitor point temperature of 135oC. This protective feature is comprised of a thermistor in the units control loop. At a temperature of 135oC 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 125oC 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 Rtrim_down = 5.11 -10.22 kΩ ∆% 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 open-drain 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. Product: www.cdpoweronline.com Temperature Shutdown The nominal input voltage for the SLC100 is 48Vdc. Once turned on reducing the input voltage to 32.0 Vdc nominal will shut down the device. At an input voltage less than 32.0V 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 33.3V the unit will return to normal operation. The unit will typically turn on at an input voltage of between 33.3V and 34.5V 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. SLC100 1.2V Rev C 11/2004 6 APPLICATION NOTES Brick Wall Current Limiting Performance Characterization 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. Output Over-Voltage Protection 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. SLC100 units with a non-latching OVP feature are available on request. Please contact the factory for further details. Safety The SLC100 meets safety requirements per UL/CUL 60950 and VDE EN60950, basic insulation rating. 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 700LFM. Temperature limits for thermal derating curves were 130oC for semiconductor junction temperature and 130oC for board temperature. Start-Up, ON/OFF and Transient Response 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 model are provided in their respective section. Efficiency Performance 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 section. EMC/EMI Considerations Analysis pending. Product: www.cdpoweronline.com SLC100 1.2V Rev C 11/2004 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 Full Load; Vin = 36Vdc 1.70 A Vin = 75Vdc 0.180 mC Full Load, 20Mhz Bandwidth 0.100 Apk-pk 55 mA 3.0 mA 7 A 1.218 Vdc 1.236 Vdc INPUT Maximum Input Current Inrush Charge Reflected Ripple Current Input Voltage Ripple Rejection Full Load (100Hz-1KHz) ELECTRICAL SPECIFICATIONS No Load Input Current -30 dB No Load Disabled Input Current Recommended Input Fuse Fast blow external fuse OUTPUT Voltage Setpoint 1.182 Voltage Range Over all conditions of line, load and temperature 1.2 1.164 Line Regulation 0.05 0.10 % of Vnom Load Regulation 0.25 0.50 % of Vnom 100 120 mVpk-pk 401 A Output Ripple Output Current Range 0 Output Current Limit Inception 42 Efficiency 46 80 Transient Response A % 50% to 75% Load Step at di/dt =0.1 A/μS;Cext=None Peak Deviation 120 mV Settling Time 300 μS 50,000 μF 48 W External Load Capacitance Rated Power * Note 1: Maximum output current for SMD Models is 25A. TRIM RESISTANCE VALUES FOR 1.2V MODULE Trim (%) 1 2 3 4 5 6 7 8 9 10 Trim Up Vout (Vdc) 1.212 1.224 1.236 1.248 1.260 1.272 1.284 1.296 1.308 1.320 Product: www.cdpoweronline.com Rtrim (Kohm) 325.6 166.49 112.1 84.92 68.26 57.44 49.64 43.68 39.09 35.37 Trim (%) 1 2 3 4 5 6 7 8 9 10 Trim Down Vout (Vdc) 1.188 1.176 1.164 1.152 1.140 1.128 1.116 1.104 1.092 1.080 SLC100 1.2V Rev C 11/2004 Rtrim (Kohm) 353.5 172.07 112.78 83.56 65.83 54.01 45.66 39.36 34.47 30.61 8 PERFORMANCE CURVES: SLC100 (1.2 VOUT) Efficiency vs. Output Current Efficiency vs. Input Voltage @ TA = +250C; Vin = 48Vdc @ TA = +250C; IO = 40A Turn On Time (VIN to VOUT) Turn Off Time (VIN to VOUT) VOUT VOUT VIN VIN Time Scale = 1ms/div Primary On Time (Primary Remote to VOUT) Time Scale = 50us/div Primary Off Time (Primary Remote to VOUT) VOUT ON/OFF VOUT VOUT ON/OFF Time Scale = 50us/div Time Scale = 1ms/div Product: www.cdpoweronline.com SLC100 1.2V Rev C 11/2004 9 PERFORMANCE CURVES: SLC100 (1.2 VOUT) continued Transient Response, 50% to 75% Load Step Transient Response, 75% to 50% Load Step VOUT VOUT IOUT IOUT Voltage Scale = 100mV/div; Time Scale = 100us/div di/dt = 0.2A/us Voltage Scale = 100mV/div; Time Scale = 100us/div di/dt = 0.2A/us Output Current (A) Vs. Ambient Temperature (Deg C) @ Vin = 48 Vdc. 40 Output Current (A) 36 32 NC 28 100 LFM 200 LFM 24 300 LFM 20 400 LFM 16 500 LFM 12 600 LFM 8 700 LFM 4 0 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 Ambient Temperature (Deg C) For additional technical support or ordering information please visit our website at www.CDpoweronline.com or call your local representative. Power Electronics Division, Americas 3400 E Britannia Drive, Tucson, Arizona 85706 Tel: 800.547.2537 Fax: 520.295.4197 C&D Technologies, EMEA/Asia/Pacific Milton Keynes MK14 5BU UK Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545 Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to be accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user’s intended purpose and in user’s specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace applications. Product: www.cdpoweronline.com SLC100 1.2V Rev C 11/2004 10