® ® INNOVATION and EXCELLENCE Dual Output Mixed Voltage, BCP Models 5V and 3.3V, "Half-Brick" 75 Watt, DC/DC Converters Features ■ Independent 5V and 3.3V outputs ■ Each output fully regulated ■ No minimum load requirements ■ Up to 15 Amps per output ■ 75 Watts total output power ■ Standard "half-brick" package ■ UL1950, EN60950 and VDE safety approvals (BASIC insulation) ■ Fully isolated, 1500Vdc guaranteed ■ 18-36V or 36-75V input ranges ■ mark available (75V-input models) ■ Input under and overvoltage shutdown ■ Continuous short-circuit protection ■ Thermal shutdown As your new, mixed-logic (5V and 3.3V) design evolves and your current requirements change, your new DC/DC converter will not. DATEL’s BCP-5/15-3.3/15-D24 (18-36V input) and BCP-5/15-3.3/15-D48 (36-75V input) are fully isolated DC/DC converters providing both 5V and 3.3V outputs. Housed in standard "half-brick" packages (2.3" x 2.4" x 0.525"), the BCP’s can support any combination of 5V and 3.3V loading up to a combined total of 15 Amps. Both outputs are fully isolated (1500Vdc) and independently line (±0.2%) and load (±0.5% and ±0.6%) regulated. Both BCP models feature input pi filters, input undervoltage and overvoltage shutdown, input reverse-polarity protection, output overvoltage protection, current limiting, and thermal shutdown. Each has an on/off control function, or an optional sync capability and the two output voltages can be trimmed independently. BCP Model DC/DC’s deliver low noise (50mVp-p), high efficiency (87%) and are fully specified for –40 to +100°C operation. Utilization of metal baseplate technology with threaded inserts permits easy heat-sink attachment and/or pcb mounting. These devices meet IEC950, UL1950, EN60950 and VDE safety standards, including BASIC insulation requirements. CB reports are available on request. "D48" models are CE marked (meet the requirements of LVD). +5V OUTPUT +INPUT SWITCH CONTROL 5V RETURN +3.3V OUTPUT –INPUT 3.3V RETURN MAG AMP CONTROLLER ON/OFF CONTROL (SYNC) PWM CONTROLLER OPTO ISOLATION REFERENCE & ERROR AMP REFERENCE & ERROR AMP 3.3V TRIM 5V TRIM UV & OV COMPARATORS 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 7 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 XCP Series Performance Specifications and Ordering Guide Model ➀ Input Output R/N (mVp-p) Regulation (Max.) VOUT (Volts) IOUT ➄ (Amps) Typ. Max. Line Load ➂ 5 15 50 100 ±0.2% ±0.5% 3.3 15 50 100 ±0.2% ±0.6% 5 15 50 100 ±0.2% ±0.5% 3.3 15 50 100 ±0.2% ±0.6% BCP-5/15-3.3/15-D24 BCP-5/15-3.3/15-D48 ➀ Typical at TA = +25°C under nominal line voltage and balanced "full-load" (5V @7.5A, 3.3V @ 7.5A) conditions unless otherwise noted. ➁ Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 22µF, low-ESR, input capacitor and 10µF tantalum in parallel with 1µF ceramic output capacitors. ➂ ➃ ➄ ➅ ➅ VIN Nom. (Volts) Range (Volts) IIN ➃ (mA) Min. Typ. Package (Case, Pinout) 24 18-36 215/3720 84% 87.2% C19, P29 48 36-75 125/1860 84% 88% C19, P29 Efficiency No load to 100% load, other output at no-load. Nominal line voltage, no-load/5V at full-load condition. Current from either output at maximum value, or both outputs to a combined total of 15 A. 5V at full-load condition. PA R T N U M B E R S T R U C T U R E Part Number Suffixes BCP - 5 / 15 - 3.3 / 15 - D24 N Dual Output/ Standard Half-Brick Package Add "N" or "S" suffix as desired Input Voltage Range: D24 = 18-36 Volts (24V nominal) D48 = 36-75 Volts (48V nominal) V1 Nominal Output Voltage: 5 Volts I1 Maximum Output Current: 15A I2 Maximum Output Current: 15A BCP 75 Watt DC/DC's are designed so an On/Off Control function, with either positive polarity (no suffix) or negative polarity ("N"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 N On/Off Control function (negative polarity) on pin 3 S Sync function on pin 3 V2 Nominal Output Voltage: 3.3 Volts M E C H A N I C A L S P E C I F I C AT I O N S Optional Heat Sink (Part Number HS-CPLP2) 3.50 (88.90) 2.30 (58.42) 0.545 (13.84) MAX. 0.525 (13.34) TYP. 2.000 (50.80) METAL BASEPLATE 0.75 (19.05) 0.20 (5.08) Case C19 PLASTIC SHELL 0.040 ±0.002 DIA. (1.016 ±0.051) 0.20 MIN (5.08) 1.900 (48.26) 2.30 (58.42) 0.20 (5.08) 1.900 (48.26) 10 1 9 0.140 THRU AND COUNTERSINK 90˚ TO 0.26 (4 PLACES) 2 8 2.000 1.400 (50.80) (35.56) 1.000 (25.40) 2.40 1.600 1.300 (40.64) (60.96) 1.000 (33.02) (25.40) 7 3 0.400 (10.16) 6 4 (4) THREADED INSERTS #M3 THD THRU 0.300 (7.62) 2.48 (62.99) 5 0.200 (5.08) 0.30 (7.62) BOTTOM VIEW MATERIAL: BLACK ANODIZED ALUMINUM 0.20 (5.08) Optional Heat Sink (Part Number HS-CP) 0.50 (12.70) TYP. 051 (12.95) MAX. 2.30 (58.42) I/O Connections Pin Function P29 Pin 1 –Input 6 2 Case (Baseplate) 7 3 On/Off Control 8 4 +Input 9 5 5V Trim 10 0.47 (11.94) 0.16 (4.06) 0.600 (15.24) Function P29 5V Return +5V Output 3.3V Trim 3.3V Return +3.3V Output 2.000 (50.80) TOP VIEW 0.147 DIA. (3.734) (4 PLACES) 2 0.10 (2.54) 0.20 (5.08) 1.900 (48.26) 0.20 (5.08) 2.40 (60.96) MATERIAL: BLACK ANODIZED ALUMINUM 4 MOUNTING SCREWS AND 0.009 (0.229) THICK THERMAL PAD INCLUDED BCP Models 7 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 Overvoltage Protection: ➁ 5V Output 3.3V Output Input Input Voltage Range: D24 Models D48 Models 18-36 Volts (24V nominal) 36-75 Volts (48V nominal) Overvoltage Shutdown: ➁ D24 Models D48 Models 37.5-40.5 Volts (39V typical) 78.8-87.0 Volts (83V typical) Start-Up Threshold: ➁ D24 Models D48 Models 15.5-18 Volts (16.5V typical) 33.5-36 Volts (34.4V typical) Undervoltage Shutdown: ➁ D24 Models D48 Models Magnetic feedback, latching 6.8 volts 4.5Volts Dynamic Characteristics Dynamic Load Response: 5V (50-100% load step to 1% VOUT) 3.3V (50-100% load step to 1% VOUT) 450µsec maximum 450µsec maximum Start-Up Time: ➁ VIN to VOUT On/Off to VOUT 30msec maximum 20msec maximum Switching Frequency 350kHz (±35kHz) Environmental Input Current: Normal Operating Conditions Minimum Input Voltage: D24 Models D48 Models Standby Mode: Off, OV, UV, Thermal Shutdown 14-16 Volts (15.3V typical) 30.5-33.5 Volts (31.8V typical) MTBF D24 Models D48 Models Bellcore, ground fixed, controlled 1.49M hours (case @ 50°C) 1.72M hours (case @ 50°C) See Ordering Guide Operating Temperature (Ambient): θ Case to Ambient, No Heatsink Without Derating With Derating 6.8°C/Watt –40 to +45°C (with heat sink) To +100°C (See Derating Curves) Case Temperature: Maximum Allowable For Thermal Shutdown ➁ +100°C +100°C minimum, +110°C maximum Storage Temperature –40 to +120°C 5.02 Amps maximum 2.51 Amps maximum 17mA typical Input Reflected Ripple Current: Source Impedance <0.1Ω 22µF Low-ESR Capacitor 53mArms, 150mAp-p maximum Input Filter Type Pi (0.47pF - 4.7µH - 3µF) Reverse-Polarity Protection: ➁ D24 Models D48 Models On/Off Control: (Pin 3) ➁ ➂ ➄ D24 & D48 Models D24N & D48N" Models Sync (Option, Pin 3): ➁ ➂ ➄ Input Threshold (Rising Edge Active) Input Voltage Low Input Voltage High Input Resistance Output High Voltage (100µA load) Input/Output Pulse Width Physical Dimensions 2.3" x 2.4" x 0.525" (58.4 x 61 x 13.3mm) 1 minute duration, 6A maximum 1 minute duration, 4A maximum Case (Baseplate) Connection ➁ Pin 2 Case/Pin Material Diallyl phthalate, UL94V-0 rated, aluminum baseplate; solder-tinned brass pins On = open or 2.0 - +VIN, IIN = 50µA max. Off = 0-0.6V, IIN = 1mA max. On = 0-0.6V, IIN = 1mA max. Off = open or 2.0 - +VIN, IIN = 50µA max. Weight 4.2 ounces (118 grams) Primary to Secondary Insulation Level Basic ➀ Models are specified at "full load" (5V & 3.3V @ 7.5A), with an external 22µF, low-ESR, input capacitor and 10µF tantalum in parallel with 1µF ceramic output capacitors. ➁ See Technical Notes for details. ➂ Devices may be ordered with opposite polarity (pin 3 open = off), or the On/Off Control function can be replaced with a sync function. See Part Number Suffixes and Technical Notes for additional information. ➃ Output noise may be further reduced with the installation of additional external output capacitors. See Technical Notes. ➄ These signals must be referenced to the input return pin (–VIN). ➅ Demonstrated MTBF available on request. 0.9-1.8 Volts 0-0.8 Volts 2.9-5.0 Volts 35kΩ minimum 2.1-2.8 Volts 200-450nsec Output VOUT Accuracy 5V Output 3.3V Output ±2% maximum ±2% maximum Minimum Loading Per Specification No load Ripple/Noise (20MHz BW) ➁ ➃ See Ordering Guide Absolute Maximum Ratings Line/Load Regulation See Ordering Guide Efficiency See Ordering Guide and Efficiency Curves Trim Range ➁ ±10% independent Isolation Voltage: Input-to-Output Input-to-Case Output-to-Case 1500Vdc minimum 1000Vdc minimum 1000Vdc minimum Isolation Capacitance 470pF Isolation resistance 100MΩ Current Limit Inception: ➁ 5V @ 98% VOUT (3.3V no-load) 3.3V @ 98% VOUT (5V no-load) 16-20 Amps 16-20 Amps Short Circuit Current: ➁ Constant current 25A, indefinite Temperature Coefficient ±0.02% per °C Input Voltage: Continuous: D24 Models D48 Models Transient (100msec): D24 Models D48 Models Input Reverse-Polarity Protection ➁ D24 Models D48 Models Output Overvoltage Protection ➁ 3.3V Outputs 5V Outputs 40.5 Volts 87 Volts 50 Volts 100 Volts Input Current must be limited. 1 minute duration. Fusing recommended. 6 Amps 4 Amps 3.8 Volts, latching 6.2 Volts, latching Output Current ➁ Current limited. Devices can withstand an indefinite output short circuit. Storage Temperature –40 to +120°C Lead Temperature (Soldering, 10 sec.) +300°C 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 7 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 XCP Series Start-Up Time TECHNICAL NOTES The VIN to VOUT start-up time is the interval between the time at which a ramping input voltage crosses the turn-on threshold point and the fullyloaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input source impedance, external input capacitance, and the slew rate and final value of the input voltage as it appears to the converter. 5V & 3.3V Outputs/Returns The BCP Series outputs (pins 7 & 10) and returns (pins 6 & 9) are isolated from the +VIN and –VIN inputs (pins 4 & 1) via a transformer and opto-coupled transistors. The +5V Return (pin 6) and +3.3V Return (pin 9) are connected internal to the DC/DC converter. Though the returns are common within the DC/DC converter, the regulating control loop for each output is sensed directly at its respective output and return pins. In order to maintain optimum regulation if ground plane is not used, it is critical that PC board layouts also return each output to its corresponding return pin. The On/Off to VOUT start-up time assumes the converter has its nominal input voltage applied but is turned off via the On/Off Control. The specification defines the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its specified accuracy band. Filtering and Noise Reduction On/Off Control (Standard feature) All BCP DC/DC Converters achieve their rated ripple and noise specifications using the external input and output capacitors specified in the Performance/ Functional Specifications table. In critical applications, input/output noise may be further reduced by installing additional external I/O caps. Input capacitors should be selected for bulk capacitance, low ESR and high rms-ripple-current ratings. Output capacitors should be selected for low ESR and appropriate frequency response. All caps should have appropriate voltage ratings and be mounted as close to the converters as possible. The On/Off Control (pin 3) may be used for remote on/off operation. As shown in Figure 1A, the control pin is referenced to the –Input (pin 1) and will be pulled to a high state internally. The standard BCP converter (no suffix) is designed so that it is enabled when the control pin is left open and disabled when the control pin is pulled low (to less than +0.6V relative to –Input). Dynamic control of the on/off function is best accomplished with a mechanical relay or an open-collector/open-drain drive circuit (optically isolated if appropriate). The drive circuit should be able to sink approximately 1mA for logic low. The most effective combination of external I/O capacitors will be a function of your particular load and layout conditions. Our Applications Engineers will be pleased to recommend potential solutions and can discuss the possibility of our modifying a device’s internal filtering to meet your specific requirements. Contact our Applications Engineering Group for additional details. The on/off control function is designed such that the converter can be disabled (pin 3 pulled low for no-suffix models) while input power is ramping up and then "released" once the input has stabilized. For BCP converters configured with the negative-polarity option on the On/Off Control pin ("N" suffix added to part number), operation is opposite to that described above. The converter is disabled when the On/Off Control pin is left open and enabled when pulled low. Input Fusing Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. Fuses should also be used if the possibility of sustained, non-current-limited, input-voltage polarity reversals exists. For DATEL BCP DC/DC Converters, you should use slowblow type fuses with values no greater than the following. 4 3.3V +INPUT 4 +INPUT 100k 21k VIN Range "D24" Models "D48" Models Fuse Value 6 Amps 4 Amps 3 3 ON/OFF CONTROL ON/OFF CONTROL Fuses should be installed in the +Input line. 1 1 –INPUT Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold Under normal start-up conditions, devices will not begin to regulate until the ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for "D48" models). Once operating, devices will not turn off until the input voltage drops below the Undervoltage Shutdown limit (32V for "D48" models). Subsequent re-start will not occur until the input is brought back up to the Start-Up Threshold. This built-in hysteresis prevents any unstable on/off situations from occurring at a single voltage. Figure 1A. No Suffix –INPUT Figure 1B. "N" Suffix Sync Function (Optional feature) In critical applications employing multiple switching DC/DC converters, it may be necessary to intentionally synchronize the switching of selected converters. The BCP Series offers an optional Sync function ("S" suffix) in place of the On/Off Control on pin 3. The Sync pin will self-configure as either a slave or master, depending on the circuit application. Input voltages exceeding the input overvoltage shutdown specification listed in the Performance/Functional Specifications will cause the device to shutdown. A built-in hysteresis (2V typical for "D24" models, 4V typical for "D48" models) will not allow the converter to restart until the input voltage is sufficiently reduced. 4 BCP Models 7 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 If the Sync pin detects the appropriate input signal, it will configure itself as a slave; if no signal is detected, it will generate master Sync pulses. Short Circuit Condition As described under "Current Limiting," when the BCP Series DC/DC converter output is subjected to a short circuit condition, the output current will remain at the Short Circuit Current limit. In this state there is negligible power dissipated in the load. Therefore, most of the input power is dissipated within the converter, causing the internal temperature to increase. If this condition persists, Thermal Shutdown will activate and shutdown the DC/DC converter. When the internal temperature is sufficiently decreased, the converter will self-start. Synchronization of converters requires that the master switching frequency exceed the slave frequency by a minimum of 60kHz. At the start of each DC/DC converter switching cycle, an internally generated 200-450ns pulse will be present at the Sync pin. If, however, the unit receives an external Sync pulse, the DC/DC converter’s switching cycle will be terminated and a new cycle initiated. Since the master frequency is higher than the slave switching frequency, the slave cycles are always terminated prematurely, thereby never allowing internal Synch pulses to be generated. The external signal’s rising edge initiates the slave Sync process. External signals must adhere to min./ max. limits stated in Performance/Functional Specifications. Thermal Shutdown The BCP Series is equipped with Thermal Shutdown circuitry. If the internal temperature of the DC/DC converter rises above the designed operating temperature, a precision temperature sensor will power down the unit. When the internal temperature decreases below the threshold of the temperature sensor the unit will self-start. Operating the BCP series DC/DC converters at higher switching frequencies via the external Sync function will result in a slight degradation of efficiency. Contact DATEL for further information. Input Reverse-Polarity Protection Output Overvoltage Protection Upon applying a reverse-polarity voltage to the DC/DC converter, an internal diode will be forward biased and draw excessive current from the power source. Therefore, it is required that the input current be limited be either an appropriately rated input fuse or a current limited power source. Each voltage output of the BCP Series converter is independently monitored via an auxiliary winding in the output inductor. If the output voltage should rise to a level which could be damaging to the load circuitry (see Performance/Functional Specifications for limits), the overvoltage circuitry will power down the PWM controller and latch off the DC/DC converter. The device must now be restarted by powering cycling VIN. Heat Sinks for BCP Series DATEL offers two standard heat sinks that can be mounted to the half-brick package to extend the converter's operating temperature range. Along with the standard 2.3" x 2.4" x 0.5" (HS-CP) heat sink, DATEL has designed a low-profile heat sink for height-restricted applications. This new heat sink (HS-CPLP2) is designed with radiant fins that extend 0.51" beyond either side of the 2.4" dimension of the BCP package. The convenience of this design is that the finned extensions protrude only 0.31" below the top surface of the DC/DC converter, allowing components with a profile height less than 0.215" to be mounted on the pc board below the heat sink. Therefore, while the surface area of the low-profile heat sink measures 2.3" x 3.5", pcb real estate is unaffected. Current Limiting When output current demands exceed the maximum output current rating by 107% to 133%, the DC/DC converter will go into a current limiting mode. In this condition the output voltage decreases proportionately as the output current increases, thereby maintaining a somewhat constant power dissipation—referred to as Power Limiting (see Figure 2). As the load approaches a short circuit, the output current will continue to increase until it reaches the rated Short Circuit Current limit. For optimum thermal performance in a natural convection application, the low-profile heat sink should be mounted with the fins vertically oriented. Both models are shipped with 0.009" sellf-adhesive thermal pad and mounting screws. BCP-5/15-3.3/15-D24, D48 Current Limiting Characteristics (Nominal VIN) 6.00 5V Output 6 ˚C WATT 4.00 3.00 5 THERMAL RESISTANCE 4 2.00 3.3V Output 1.00 26 25 24 23.5 22.6 22.4 21.9 20.9 20.3 19.8 19.3 18.8 18.3 17.8 17.2 16.7 16.2 15.7 0 15.2 Output Voltage VOUT (Volts) 5.00 Output Current, IOUT (Amps) HS-CPLP2 3 HS-CP 2 1 0 0 Figure 2. Current Limiting Characteristics 100 200 300 400 500 600 AIR VELOCITY (FT./MIN.) HS-CP and HS-CPLP2 Heat Sink Performance Vs. Air Flow (@ 10.5 Watts Power Dissipation) 5 700 7 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 XCP Series Table 1 shows the typical fixed Trim Resistor values for output voltage changes of 0 through 10%. Trim adjustment greater than 10% can have an adverse affect on the converter’s performance and is not recommended. Output Trimming Both the 5V and 3.3V outputs of the BCP Series can be independently trimmed via a trimpot (Figure 3A) or a single fixed resistor as shown (Figures 3B & 3C). The trimpot can be used to determine the value of a single fixed resistor. A single fixed resistor can increase or decrease the output voltage depending on its connection. Fixed resistors should be metal-film types with absolute TCR’s less than 100ppm/°C to ensure stability. +3.3V OUTPUT 3.3V TRIM 1 +5V OUTPUT 4 10 20kΩ 5-22 TURNS 8 –INPUT 3.3V RETURN +INPUT 5V TRIM 5V RETURN 3.3V Trim Down +3.3V LOAD 9 7 20kΩ 5-22 TURNS 5 +5V LOAD 6 3.3V Trim Up 5V Trim Down 5V Trim Up 0% – – – – 1% 47.81k 27.93k 189.75k 61.68k 2% 22.32k 12.78k 91.06k 28.34k 3% 13.82k 7.73k 58.17k 17.23k 4% 9.57k 5.21k 41.72k 11.68k 5% 7.02k 3.69k 31.85k 8.34k 6% 5.320k 2.68k 25.27k 6.12k 7% 4.10k 1.96k 20.57k 4.53k 8% 3.19k 1.42k 17.05k 3.34k 9% 2.48k 1.00k 14.31k 2.42k 10% 1.92k 0.66k 12.12k 1.68k Table 1. Percentage of Output Voltage Change vs Trim Resistor Value (Ohms) Figure 3A. Trim Connections Using a Trimpot The following equations mathematically depict: Output Voltage for a given Trim Resistor Trim Resistor for a given Output Voltage A resistor connected from the Trim Pin (pin 5 for 5V trim, pin 8 for 3.3V trim) to the appropriate Return (pin 6 for 5V trim, pin 9 for 3.3V trim) will increase the output voltage. 5 Volt Trim Up +3.3V OUTPUT 3.3V TRIM 1 +5V OUTPUT +INPUT 5V TRIM 5V RETURN VO = 5.0 + 8 –INPUT 3.3V RETURN 4 10 9 +3.3V TRIM UP +3.3V LOAD 1 0.30RTUP (kΩ) + 1.5 RTUP (kΩ) = 1 (0.3VO) – 1.50 –4.99 5 Volt Trim Down 7 1.14 5 6 +5V TRIM UP VO = 1.25 +5V LOAD 0.38 + +1 1 1 RTDOWN (kΩ) = RTDOWN (kΩ) + 4.99 –4.99 1.14 (0.8VO) – 1 –0.38 3.3 Volt Trim Up Figure 3B. Increase Output Voltage Trim Connections Using a Fixed Resistor VO = 3.30 + 1 RTUP (kΩ) + 2.37 A single resistor connected from the Trim Pin (pin 5 for 5V trim, pin 8 for 3.3V trim) to its appropriate +Output (pin 7 for 5V trim, pin 10 for 3.3V trim) will decrease the output voltage. +3.3V OUTPUT 1 8 –INPUT 3.3V RETURN +5V OUTPUT 4 +INPUT VO = 1.23 9 +3.3V TRIM DOWN +3.3V LOAD 5 +5V TRIM DOWN +5V LOAD 5V RETURN 6 –2.37 1.23 + 2.07 1 RTDOWN (kΩ)+ 2.37 1 +1 RTDOWN (kΩ) = 2.07 –1.23 VO –1 1.23 –2.37 Note: Resistor values are in kΩ. Accuracy of adjustment is subject to tolerances of resistor values and factory-adjusted output accuracy. VO = desired output voltage. 7 5V TRIM 1 VO – 3.3 3.3 Volt Trim Down 10 3.3V TRIM RTUP (kΩ) = Case Connection BCP DC/DC's do not have their metal baseplate connected to one of the input pins. The "uncommitted" baseplate is connected to pin 2 which, depending upon your system configuration, should be connected to either +Input (pin 4), –Input (pin 1), Output Returns (pins 6 & 9), or earth ground. Figure 3C. Decrease Output Voltage Trim Connections Using a Fixed Resistor 6 BCP Models 7 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 D24 Model D48 Model Output Ripple and Noise (PARD) (VIN = 24V, [email protected], 3.3V @ 7.5A, external 10µF || 1µF output capacitors.) Output Ripple and Noise (PARD) (VIN = 48V, [email protected], 3.3V @ 7.5A, external 10µF || 1µF output capacitors.) 3.3V Output Ripple/Noise 20mV/div 3.3V Output Ripple/Noise 20mV/div 5V Output Ripple/Noise 20mV/div 5V Output Ripple/Noise 20mV/div 1µsec/div 1µsec/div 5V Output Full-Load to Half-Load Transient Response 5V Output Full-Load to Half-Load Transient Response (VIN = 24V, 3.3V@ 0A, external 10µF || 1µF output capacitors.) (VIN = 48V, 3.3V@ 0A, external 10µF || 1µF output capacitors.) 5V Output 100mV/div 5V Output 100mV/div 15A 15A Output Current 5A/div Output Current 5A/div 7.5A 7.5A 100µsec/div 100µsec/div 5V Output Half-Load to Full-Load Transient Response 5V Output Half-Load to Full-Load Transient Response (VIN = 24V, 3.3V@ 0A, external 10µF || 1µF output capacitors.) (VIN = 48V, 3.3V@ 0A, external 10µF || 1µF output capacitors.) 5V Output 100mV/div 5V Output 100mV/div 15A Output Current 5A/div 15A Output Current 5A/div 7.5A 7.5A 100µsec/div 100µsec/div 7 7 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 XCP Series Typical Performance Curves D24 Model D48 Model 3.3V Output Full-Load to Half-Load Transient Response 3.3V Output Full-Load to Half-Load Transient Response (VIN = 24V, 5V@ 0A, external 10µF || 1µF output capacitors.) (VIN = 48V, 5V@ 0A, external 10µF || 1µF output capacitors.) 3.3V Output 100mV/div 3.3V Output 100mV/div 15A Output Current 5A/div 15A Output Current 5A/div 7.5A 7.5A 100µsec/div 100µsec/div 3.3V Output Half-Load to Full-Load Transient Response 3.3V Output Half-Load to Full-Load Transient Response (VIN = 24V, 5V@ 0A, external 10µF || 1µF output capacitors.) (VIN = 48V, 5V@ 0A, external 10µF || 1µF output capacitors.) 3.3V Output 200mV/div 3.3V Output 200mV/div 15A 15A Output Current 5A/div Output Current 5A/div 7.5A 7.5A 100µsec/div 100µsec/div Input Ripple Current Input Ripple Current (VIN = 24V, 5V @ 15A, 3.3V@ 0A, external 22µF low-ESR input capacitor.) (VIN = 48V, 5V @ 15A, 3.3V@ 0A, external 22µF low-ESR input capacitor.) 50mA/div 50mA/div 1µsec/div 1µsec/div 8 BCP Models 7 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 D24 Model D48 Model Input Ripple Current Input Ripple Current (VIN = 24V, 5V @ 0A, 3.3V @ 15A, external 22µF low-ESR input capacitor.) (VIN = 48V, 5V @ 0A, 3.3V @ 15A, external 22µF low-ESR input capacitor.) 50mA/div 50mA/div 1µsec/div 1µsec/div Start-Up from Remote On/Off Control Start-Up from Remote On/Off Control (VIN = 24V, 5V@ 7.5A, 3.3V @ 7.5A, external 10µF || 1µF output capacitors.) (VIN = 48V, 5V@ 7.5A, 3.3V @ 7.5A, external 10µF || 1µF output capacitors.) Remote On/Off (Pin 3) 2V/div Remote On/Off (Pin 3) 2V/div 3.3V Output 2V/div 3.3V Output 2V/div 5V Output 2V/div 5V Output 2V/div 4msec/div 4msec/div Start-Up from VIN Start-Up from VIN (VIN = 24V, 5V@ 7.5A, 3.3V @ 7.5A, external 10µF || 1µF output capacitors.) (VIN = 48V, 5V@ 7.5A, 3.3V @ 7.5A, external 10µF || 1µF output capacitors.) VIN 10V/div VIN 20V/div 3.3V Output 2V/div 3.3V Output 2V/div 5V Output 2V/div 5V Output 2V/div 4msec/div 4msec/div 9 7 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 XCP Series Typical Performance Curves D24 Model D48 Model Output Power vs. Ambient Temperature (Without heat sink, 5V Output, 3.3V @ 0A.) 80 80 70 70 60 60 Output Power (Watts) Output Power (Watts) Output Power vs. Ambient Temperature (Without heat sink, 5V Output, 3.3V @ 0A.) 50 40 Natural Convection Cooling 30 150 Linear Feet Per Minute 20 50 40 Natural Convection Cooling 30 150 Linear Feet Per Minute 20 300 Linear Feet Per Minute 10 300 Linear Feet Per Minute 10 0 –40 –10 0 10 20 30 40 50 60 70 80 90 0 –40 100 –10 0 10 Ambient Temperature (°C) 70 70 60 60 Output Power (Watts) Output Power (Watts) 80 50 40 Natural Convection Cooling 150 Linear Feet Per Minute 60 70 80 90 100 40 Natural Convection Cooling 30 150 Linear Feet Per Minute 300 Linear Feet Per Minute 10 0 –40 0 35 40 45 50 55 60 65 70 75 80 85 90 95 0 –40 100 0 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Ambient Temperature (°C) Ambient Temperature (°C) Output Power vs. Ambient Temperature (Without heat sink, 3.3V Output, 5V @ 0A.) Output Power vs. Ambient Temperature (Without heat sink, 3.3V Output, 5V @ 0A.) 50 50 Output Power (Watts) Output Power (Watts) 50 50 20 300 Linear Feet Per Minute 10 40 30 Natural Convection Cooling 20 150 Linear Feet Per Minute 10 300 Linear Feet Per Minute 0 –40 –10 0 10 20 30 40 50 60 70 80 90 40 30 Natural Convection Cooling 20 150 Linear Feet Per Minute 10 300 Linear Feet Per Minute 0 –40 100 –10 0 10 Ambient Temperature (°C) 30 40 50 60 70 80 90 100 Output Power vs. Ambient Temperature (With HS-CP heat sink, 3.3V Output, 5V @ 0A.) 50 Output Power (Watts) 50 40 30 Natural Convection Cooling 20 150 Linear Feet Per Minute 10 0 –40 20 Ambient Temperature (°C) Output Power vs. Ambient Temperature (With HS-CP heat sink, 3.3V Output, 5V @ 0A.) Output Power (Watts) 40 Output Power vs. Ambient Temperature (With HS-CP heat sink, 5V Output, 3.3V @ 0A.) 80 20 30 Ambient Temperature (°C) Output Power vs. Ambient Temperature (With HS-CP heat sink, 5V Output, 3.3V @ 0A.) 30 20 300 Linear Feet Per Minute 0 35 40 45 50 55 60 65 70 75 80 85 90 95 40 30 150 Linear Feet Per Minute 10 0 –40 100 Ambient Temperature (°C) Natural Convection Cooling 20 300 Linear Feet Per Minute 0 35 40 45 50 55 60 65 70 75 Ambient Temperature (°C) 10 80 85 90 95 100 BCP Models 7 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 D24 Model D48 Model 5V Efficiency vs. Load (+3.3V Output @ 0 Amps.) 5V Efficiency vs. Load (+3.3V Output @ 0 Amps) 90 90 88 88 86 86 84 82 VIN = 24V VIN = 30V Efficiency (%) Efficiency (%) 84 80 VIN = 18V 78 76 74 VIN = 75V VIN = 60V 82 80 VIN = 48V 78 76 74 72 VIN = 36V 72 VIN = 36V 70 70 68 1.875 3.75 5.625 7.5 9.375 11.25 13.125 68 1.875 15 3.75 5.625 +5V Output Current (Amps) 7.5 9.375 11.25 13.125 15 13.125 15 +5V Output Current (Amps) 3.3V Efficiency vs. Load (+5V Output @ 0 Amps.) 3.3V Efficiency vs. Load (+5V Output @ 0 Amps.) 75.0 78 72.5 76 74 70.0 72 VIN = 18V Efficiency (%) Efficiency (%) 67.5 65.0 VIN = 24V 62.5 60.0 VIN = 30V 57.5 70 VIN = 60V 68 VIN = 48V 66 64 VIN = 36V 62 60 55.0 58 VIN = 36V 52.5 VIN = 75V 56 50.0 1.875 3.75 5.625 7.5 9.375 11.25 13.125 54 1.875 15 3.75 5.625 +3.3V Output Current (Amps) 11.25 Overall Efficiency vs. Line and Load 90 88 88 86 86 84 84 Efficiency (%) Efficiency (%) Overall Efficiency vs. Line and Load 82 +3.3V @ 0A and +5V @15A +3.3V @ 3.75A and +5V @11.25A +3.3V @ 7.5A and +5V @7.5A +3.3V @ 15A and +5V @0A 78 9.375 +3.3V Output Current (Amps) 90 80 7.5 82 78 76 76 74 74 72 72 70 +3.3V @ 0A and +5V @15A +3.3V @ 3.75A and +5V @11.25A +3.3V @ 7.5A and +5V @7.5A +3.3V @ 15A and +5V @0A 80 70 36 40.4 44.7 49 53.3 57.7 62 66.3 70.7 75 36 Input Voltage (Volts) 40.4 44.7 49 53.3 57.7 Input Voltage (Volts) 11 62 66.3 70.7 75 7 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 XCP Series Typical Performance Curves D24 Model D48 Model Output Ripple and Noise (PARD) vs. Input Voltage (One output @ 15A, other output @ 0A, PARD measured on loaded output, 20MHz bandwidth.) Output Ripple and Noise (PARD) vs. Input Voltage (One output @ 15A, other output @ 0A, PARD measured on loaded output, 20MHz bandwidth.) 70 60 55 Output PARD Voltage (mVp-p) Output PARD Voltage (mVp-p) 60 PARD 3.3V Output 50 PARD 5V Output 40 Ripple 3.3V Output 30 Ripple 5V Output 20 PARD 3.3V Output 50 45 40 35 PARD 5V Output Ripple 3.3V Output 30 25 20 15 10 18 20.57 23.14 25.71 28.29 30.86 33.43 Ripple 5V Output 10 36 35 Input Voltage (Volts) ® 40.71 46.43 52.14 57.86 63.57 69.29 75 Input Voltage (Volts) ® INNOVATION and EXCELLENCE ISO 9001 REGISTERED DS-0449 3/01 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. 12