® ® INNOVATION and EXCELLENCE Dual Output Mixed Voltage, BWR Models 5V and 3.3V, 2" x 2" 33 Watt, DC/DC Converters Features ! Regulated 3.3V and 5V outputs ! 5V @ 6Amps/3.3V @ 7 Amps capability ! 33 Watts total output power ! No-load operation ! Available input voltage ranges: 10-18V, 18-36V or 36-75V ! Small 2" x 2" x 0.45" package ! 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 overvoltage protection ! Thermal shutdown For applications requiring 33 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 BWR-5/6-3.3/7-D48 (36-75V input), BWR-5/6-3.3/7-D24 (18-36V input) and BWR-5/6-3.3/7-D12 (10-18V input) are fully isolated DC/DC converters capable of delivering any combination of 5V and 3.3V loading up to a combined total of 33 Watts of output power. Housed in a standard 2" x 2" x 0.45" metal package coated with electrically nonconductive finish, these converters utilize a shared control-loop system to assure load regulation of ±1% for 3.3V output and ±1.5% for 5V output. All models include input Pi filtering, input overvoltage and undervoltage shutdown circuitry, output overvoltage protection, output short-circuit and current limiting protection, and thermal shutdown. Each design also provides trim capability, on/off control function, or an optional sync control. Fully synchronous output rectification renders high efficiency and no-load operation. BWR power sharing modules offer low ripple and noise performance, high efficiency (88%), 1500Vdc of isolation voltage, and are fully specified for –40 to +100°C operation. These devices meet IEC950, UL1950 and EN6950 safety standards, including BASIC insulation requirements for "D48" models. CB reports are available on request. "D48" models are CE marked (meet LVD requirements). +5V OUTPUT +INPUT SWITCH CONTROL +3.3V OUTPUT –INPUT OUTPUT RETURN ON/OFF CONTROL (SYNC) PWM CONTROLLER ACTIVE BLEEDER 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 3 3 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 BWR-5/6-3.3/7-D12 BWR-5/6-3.3/7-D24 BWR-5/6-3.3/7-D48 ➀ Input Output R/N (mVp-p) ➂ Regulation (Max.) ➆ VOUT (Volts) IOUT ➁ (Amps) Typ. Max. Line 5 6 40 100 ±1% ±1.5% ±2.5% 3.3 7 95 140 ±0.5% ±1% ±1.5% Load ➃ No Load ➅ 5 6 40 100 ±1% ±1.5% ±2.5% 3.3 7 95 140 ±0.5% ±1% ±1.5% 5 6 40 100 ±1% ±1.5% ±2.5% 3.3 7 95 140 ±0.5% ±1% ±1.5% ➀ Typical at TA = +25°C under nominal line voltage and balanced "full-load" conditions (5V @ 3.3A/3.3V @ 5A). ➁ Any combination of 5V/3.3V rated IOUT current, not to exceed 33 Watts of output power. (See derating graphs.) ➂ Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 1µF ceramic output capacitors. ➃ ➄ ➅ ➆ VIN Nom. (Volts) Range (Volts) IIN ➄ (mA) Min. Typ. Package (Case, Pinout) 12 10-18 70/3308 83% 86% C4, P33 24 18-36 50/1615 85% 88% C4, P33 48 36-75 25/780 85% 88% C4, P33 Efficiency Tested from 10% load to 100% load (other output at 10% load). Nominal line voltage, no load/balanced full-power condition. Tested from no-load to 100% load (other output at no-load). Output trim may impact 5V load regulation. PA R T N U M B E R S T R U C T U R E BWR - 5 / 6 - 3.3 / 7 - D48 S Dual Output/ Mixed-Voltage 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: 6 Amps BWR 33 Watt DC/DC's are designed so an On/Off Control function with positive polarity (no suffix) or a Sync function ("S" suffix) can be added in the pin 4 position. No Suffix On/Off Control function (positive polarity) on pin 4 S Suffix Sync function on pin 4 I2 Maximum Output Current: 7 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 Case C4 I/O Connections Pin 1 2 3 4 5 6 7 8 2 Function P33 +Input –Input No Pin On/Off Control +5V Output Output Return +3.3V Output Trim Notes: For "D12" and "D24" models the case is connected to pin 2 (–Input). For "D48" models, the case is connected to pin 1 (+Input). BWR Models 3 3 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 Input Input Voltage Range: D12 Models D24 Models D48 Models 10-18 Volts (12V nominal) 18-36 Volts (24V nominal) 36-75 Volts (48V nominal) Current Limit Inception: ➁ 5V @ 95% VOUT (3.3V @ 0A) 3.3V @ 98.5% VOUT (5V @ 0A) 7.6-9.0 Amps 11.3-12.7 Amps Short Circuit Current: ➁ 5V Output 3.3V Output 5 Amps average, continuous 6 Amps average, continuous Overvoltage Protection: ➁ 5V Output 3.3V Output Magnetic feedback 6.8 volts 4.5Volts Maximum Capacitive Loading D12 Models 3.3V 5V D24, D48 Models 3.3V 5V 1000µF 470µF 2000µF 1000µF Overvoltage Shutdown: ➁ D12 Models D24 Models D48 Models 19-23 Volts (21V nominal) 37-42 Volts (40V nominal) 77-81 Volts (79V nominal) Start-Up Threshold: ➁ D12 Models D24 Models D48 Models 9-10 Volts (9.3V nominal) 16.5-18 Volts (17V nominal) 34-36 Volts (35V nominal) Undervoltage Shutdown: ➁ D12 Models D24 Models D48 Models 8.5-9.6 Volts (9.3V nominal) 16-17 Volts (16.5V nominal) 32.5-35 Volts (34V nominal) Dynamic Load Response: ➁ 300µsec maximum 5V (50-100% load step to 4% VOUT) 3.3V (50-100% load step to 2.5% VOUT) 300µsec maximum See Ordering Guide Start-Up Time: ➁ VIN to VOUT On/Off to VOUT 20msec maximum 15msec maximum 285kHz (±15kHz) Dynamic Characteristics Input Current: Normal Operating Conditions Standby Mode: Off, OV, UV, Thermal Shutdown 10mA typical Switching Frequency Input Reflected Ripple Current: Source Impedance D12 Models D24/D48 Models <0.1Ω, no external input filtering 200mAp-p (150mAp-p typical) 250mAp-p (225mAp-p typical) MTBF ➆ Internal Input Filter Type Pi (0.022µF - 4.7µH - 2.46µF) Reverse-Polarity Protection: ➁ D12 Models D24 Models D48 Models 1 minute duration, 6A maximum 1 minute duration, 4A maximum 1 minute duration, 2A maximum On/Off Control (Pin 4): ➁ ➂ ➃ ➅ D12, D24 & D48 Models Environmental D12 Models D24/D48 Models On = open or 13V - +VIN, IIN = 50µA max. Off = 0-0.8V, IIN = 1mA max. Sync (Option, Pin 4): ➁ 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 1-2.7 Volts 0-0.9 Volts 2.8-5 Volts 35kΩ minimum 3.5-4.8 Volts 35mA 160-360nsec Operating Temperature (Ambient): ➁ Without Derating: D12 Models D24 Models D48 Models With Derating –40 to +50°C –40 to +60°C –40 to +68°C To +100°C (See Derating Curves) Case Temperature: Maximum Operational For Thermal Shutdown ➁ +100°C +110°C minimum, +117°C maximum Storage Temperature Dimensions 2" x 2" x 0.45" (50.8 x 50.8 x 11.43mm) Internal Case Connection: D12/D24 Models D48 Models –Input (Pin 2) +Input (Pin 1) Case Material ±3% maximum ±1.5% maximum –40 to +120°C Physical Output VOUT Accuracy 5V Output 3.3V Output Bellcore, ground fixed, full power, +25°C operating ambient temperature 1.3 million hours 1.67 million hours Corrosion resistant steel with non-conductive, epoxy-based, black enamel finish and plastic baseplate Minimum Loading Per Specification No load, see Performance Specifications Pin Material Brass, solder coated Ripple/Noise (20MHz BW) ➁ ➄ See Ordering Guide Weight: 2.7 ounces (76.5 grams) Line/Load Regulation ➁ See Ordering Guide Efficiency See Ordering Guide / Efficiency Curves Primary to Secondary Insulation Level D12/D24 Models Operational D48 Models Basic Cross Regulation: ➁ 5V Output ([email protected], [email protected]) ±6% maximum 3.3V Output ([email protected], [email protected]) ±0.5% maximum Trim Range ➁ ➀ Balanced "full-load" is 5V @ 3.3A/3.3V @ 5A. All models are specified with external 1µF ceramic output capacitors. ➁ See Technical Notes/Graphs for details. ➂ Devices may be ordered with On/Off Control function or a Sync function. See Part Number Suffixes and Technical Notes for details. ➃ Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter may 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 return pin (–Input). ➆ Demonstrated MTBF available on request. ±5% Isolation Voltage: Input-to-Output 1500Vdc minimum Isolation Capacitance 470pF Isolation Resistance 100MΩ Temperature Coefficient ±0.02%/per°C 3 3 3 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 Start-Up Time Absolute Maximum Ratings Input Voltage: Continuous: "D12" Models "D24" Models "D48" Models Transient (100msec): "D12" Models "D24" Models "D48" Models Input Reverse-Polarity Protection ➁ "D12" Models "D24" Models "D48" Models Output Current ➁ The VIN to VOUT start-up time is the interval of time where the input voltage crosses the turn-on threshold point, and the fully loaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input source impedance, external input/output capacitance, and the slew rate of the input voltages. The BWR-5/6-3.3/7 Series implements a soft start circuit that limits the duty cycle of the PWM controller at power up, thereby limiting the Input Inrush current. 23 Volts 42 Volts 81 Volts 25 Volts 50 Volts 100 Volts Input Current must be limited. 1 minute duration. Fusing recommended. 6 Amps 4 Amps 2 Amps The On/Off Control to VOUT start-up time assumes the converter has its nominal input voltage applied but is turned off via the On/Off Control pin. 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. Similar to the VIN to VOUT start-up, the On/Off Control to VOUT start-up time is also governed by the internal soft start circuitry and external load capacitance. Current limited. Devices can withstand an indefinite output short circuit. On/Off Control (Pin 4) Max. Voltages Referenced to –Input (pin 2) No Suffix "S" Suffix +VIN +5.7 Volts Storage Temperature –40 to +120°C Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold Lead Temperature (Soldering, 10 sec.) +300°C 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 (34V 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 input voltage. 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. TECHNICAL NOTES Input voltages exceeding the input overvoltage shutdown specification listed in the Performance/Functional Specifications will cause the device to shutdown. A built-in hysteresis of 0.6 to 1.6 Volts for all models will not allow the converter to restart until the input voltage is sufficiently reduced. 5V & 3.3V Regulation The BWR 33 Watt Series converters are designed such that both the 5V and 3.3V outputs share a common regulation feedback control loop. Though the feedback loop is influenced by both outputs, the 3.3 Volt output is dominant. As a result, the 3.3 Volt regulation (1%) is superior to the 5 Volt regulation (1.5%). On/Off Control The On/Off Control (pin 4) may be used for remote on/off operation. As shown in Figure 1, the control pin is referenced to the –Input (pin 2) and will be internally pulled to a high state. The standard BWR model (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 (less than +0.8V relative to –Input). The converters are specified for load regulation of 10% to 100% loading and for no-load to 100% loading. Operation below 10% of full load mandates an increase in the regulation tolerance of ±0.5% for 3.3 Volt output and an increase of ±1% for the 5 Volt output. A slight increase in switching noise may also be observed for operation below 10% loading. Dynamic control of the on/off function is best accomplished with a mechanical relay or an open-collector/open-drain circuit (optically isolated if appropriate). The drive circuit should be able to sink approximately 1 mA for logic low. Operation with a full load on 3.3 Volt output and light to no load on 5 Volt output is the most demanding for +5V regulation. Under such conditions the internal "bleeder" circuit is activated to provide an internal load thereby keeping regulation within the published specifications. The bleeder is activated gradually so as not to cause any erratic behavior on the converters outputs. A slight degradation in efficiency will occur while this internal load is activated. The on/off control function is designed such that the converter can be disabled while the input power is ramping up, and then "released" once the input has stabilized. Filtering and Noise Reduction 1 The BWR 33 Watt Series Converters achieve their rated ripple and noise specifications with the use of 1µF output capacitors. In critical applications, input/output noise may be further reduced by installing additional external I/O capacitors. 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 located as close to the converter as possible. +INPUT RA 4 D12 RA = 34.8kΩ, RB = 6.83kΩ D24 RA = 100kΩ, RB = 9.74kΩ ON/OFF CONTROL D48 RA = 100kΩ, RB = 4.53kΩ RB 2 –INPUT Figure 1. Internal Circuitry for No Suffix Models 4 BWR Models 3 3 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 Sync Function (Optional) Typical Current Limiting Characteristics for 5V Output (3.3V Output @ 700mA) In critical applications employing multiple switching DC/DC converters, it may be necessary to synchronize the switching of selected converters. These BWR converters offer an optional Sync function ("S" suffix) in place of the On/Off Control on pin 4. The Sync pin will self configure as either a slave or master, depending on the application. 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. 5 4.5 4 3.5 3 Ouput Voltages (Volts) 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 160-360ns 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 reset, and a new cycle initiated. Since the master frequency is higher than the slave’s 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. 2.5 2 VIN NOM, VIN LO All Models VIN HI D12, D24 Models 1.5 1 VIN HI D48 Models 0.5 0 0 1 2 3 4 5 6 7 8 9 5 VOUT Average Ouput Current (Amps) Operating these BWR converters at higher switching frequencies via the external Sync function will result in a slight degradation of efficiency. Contact the DATEL for further information. Figure 2b. Current Limiting Characteristics for 5V Output Current Limiting Short Circuit Condition When power demands from either output fall within 126% to 181% of the rated output current, the DC/DC converter will go into a current limiting mode. In this condition both output voltages will decrease proportionately with increases in output current, thereby maintaining a somewhat constant power dissipation. This is commonly referred to as power limiting (see Figures 2a and 2b). Current limit inception is defined as the point where the full-power output voltage falls below the specified tolerance. If the load current being drawn from the converter is significant enough, the unit will go into a short circuit condition. See "Short Circuit Condition." When a converter is in current limit mode the output voltages will drop as the output current demand increases (see figures 2a and 2b). If the output voltage drops too low, the magnetically coupled voltage used to develop primary side voltages will also drop, thereby shutting down the PWM controller. Following a time-out period of 5 to 15 milliseconds, the PWM will restart, causing the output voltages to begin ramping to their appropriate values. If the short-circuit condition persists, another shutdown cycle will be initiated. This on/off cycling is referred to as "hiccup" mode. The hiccup cycling reduces the average output current, thereby preventing internal temperatures from rising to excessive levels. The BWR is capable of enduring an indefinite short circuit output condition. Typical Current Limiting Characteristics for 3.3V Output Thermal Shutdown Ouput Voltages (Volts) 4 These BWR converters are 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. 3 2 Output Overvoltage Protection VIN NOM, VIN LO All Models VIN HI D12, D24 Models 1 Both output voltages are monitored for an overvoltage condition via magnetic coupling to the primary side. If either output voltage should rise to a level which could be damaging to the load circuitry, the sensing circuitry will power down the PWM controller causing the output voltages to decrease. Following a time-out of 5 to 15 milliseconds the PWM will restart, causing the output voltages to ramp to their appropriate values. If the fault condition persists, and the output voltages again climb to excessive levels, the overvoltage circuitry will initiate another shutdown cycle. This on/off cycling is referred to as "hiccup" mode. VIN HI D48 Models 0 0 2 4 6 8 10 12 14 3.3 VOUT Average Ouput Current (Amps) Figure 2a. Current Limiting Characteristics for 3.3V Output 5 3 3 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 Isolation / Case Connection The BWR 33 Watt Series’ 5V and 3.3V outputs (pins 5 & 7) and return (pin 6) are isolated from the +VIN and –VIN inputs (pins 1 & 2) via a transformer and an opto-coupled transistor. Case connections are made internal to the DC/DC converter. "D12 & D24" cases are connected to –Input (pin 2), "D48" to +Input (pin 1). 1 +INPUT +5V OUTPUT 5 +5V LOAD OUTPUT RETURN 2 –INPUT 4 Input Reverse-Polarity Protection Upon applying a reverse-polarity voltage to the DC/DC converter, an internal diode will be forward biased, drawing 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. ON/OFF CONTROL +3.3V OUTPUT TRIM 6 20kΩ 5-22 Turns 7 +3.3V LOAD 8 Figure 3. Trim Connections using a Trimpot Input Fusing +5V OUTPUT 1 5 +INPUT 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 a sustained, non-current-limited, input-voltage polarity reversal exists. For DATEL BWR 33 Watt Series Converters, slow blow fuses are recommended with values no greater than the following. VIN Range "D12" Models "D24" Models "D48" Models +5V LOAD OUTPUT RETURN 2 –INPUT 6 +3.3V LOAD 4 Fuse Value 6 Amps 4 Amps 2 Amps ON/OFF CONTROL +3.3V OUTPUT TRIM 7 8 R TRIM DOWN Figure 4. Decrease Output Voltage Trim Connections Using A Fixed Resistor Trim Down It is recommended that fuses be installed in the +Input line. RTDOWN (kΩ) = Trimming Output Voltages These BWR converters have a trim capability (pin 8) 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 3 or a single fixed resistor as shown in Figures 4 and 5. 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 minimize sensitivity to changes in temperature. e 3.55(VO – 1.273) 3.3 – VO +5V OUTPUT 1 –INPUT –13 5 +INPUT 2 j +5V LOAD OUTPUT RETURN 6 +3.3V LOAD A single resistor connected from the Trim Pin (pin 8) the +3.3V Output (pin 7), see Figure 4, will decrease the output voltages. A resistor connected from the Trim Pin (pin 8) to Output Return (pin 6) will increase the output voltages. 4 ON/OFF CONTROL +3.3V OUTPUT TRIM 8 R TRIM UP Figure 5. Increase Output Voltage Trim Connections Using A Fixed Resistor Table 1 shows the typical Trim Resistor values for output voltage changes of 1 through 5%. Trim adjustment greater than 5% can have an adverse affect on the converter’s performance and is not recommended. Trim Up RTUP (kΩ) = Trim Down 7 e 4.51 VO – 3.3 j –13 Trim Up 0% – – 1% 201.5k 123.7k 2% 92.5k 55.3k 3% 56.1k 32.6k 4% 38k 21.2k 5% 27.1k 14.3k Note: Accuracy of adjustment is subject to the tolerances of resistor values, reference accuracy and factory-adjusted output accuracy. VO = desired output voltage. Table 1. Percentage of Output Voltage Change vs Trim Resistor Value (Ohms) 6 BWR Models 3 3 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 Model D12, D24, D48 Models Input Ripple Current (VIN = 18V, 5V @ 3A, 3.3V@ 4.5A, Output Ripple and Noise (PARD) (VIN = nominal, 5V@3A, 3.3V @ 4.5A, external 1µF output capacitors.) no external filtering, source impedance <0.1Ω.) 5V Output Ripple/Noise 50mV/div 20MHz BW 50mA/div 3.3V Output Ripple/Noise 50mV/div 20MHz BW 1µsec/div 1µsec/div D24 Model Input Ripple Current (VIN = 36V, 5V @ 3A, 3.3V@ 4.5A, Output Ripple and Noise (PARD) (VIN = nominal, 5V@0A, 3.3V @ 7A, external 1µF output capacitors.) no external filtering, source impedance <0.1Ω.) 5V Output Ripple/Noise 50mV/div 20MHz BW 50mA/div 3.3V Output Ripple/Noise 50mV/div 20MHz BW 1µsec/div 1µsec/div D48 Model Output Ripple and Noise (PARD) (VIN = nominal, 5V@ 6A, 3.3V @ 0A, external 1µF output capacitors.) Input Ripple Current (VIN = 75V, 5V @ 3A, 3.3V@ 4.5A, no external filtering, source impedance <0.1Ω.) 5V Output Ripple/Noise 50mV/div 20MHz BW 50mA/div 3.3V Output Ripple/Noise 50mV/div 20MHz BW 1µsec/div 1µsec/div 7 3 3 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 D12, D24, D48 Models D12, D24, D48 Models 5V Output Half-Load to Full-Load Transient Response 3.3V Output Half-Load to Full-Load Transient Response (VIN = nominal, 3.3V@ 700mA, external 1µF output capacitors.) (VIN = nominal, 5V@ 600mA, external 1µF output capacitors.) 5V Output 100mV/div 3.3V Output 100mV/div 7A 6A Output Current 2A/div Output Current 2A/div 3A 3.5A 100µsec/div 100µsec/div 5V Output Full-Load to Half-Load Transient Response 3.3V Output Full-Load to Half-Load Transient Response (VIN = nominal, 3.3V@ 700mA, external 1µF output capacitors.) (VIN = nominal, 5V@ 600mA, external 1µF output capacitors.) 5V Output 100mV/div 3.3V Output 100mV/div 7A 6A Output Current 2A/div Output Current 2A/div 3A 3.5A 100µsec/div 100µsec/div Cross Regulation Effects on +3.3VOUT Cross Regulation Effects On +5VOUT (Reference Point 5V @ 3.9A, 3.3V @ 4A) (Reference Point 5V @ 4A, 3.3V @ 3.9A) 4.0 0.6 Percentage of Change in +5 VOUT (%) Percentage of Change on 3.3 VOUT (%) 0.8 3.3V @ 0A 0.4 3.3V @ 2A 0.2 0 3.3V @ 4A –0.2 3.3V @ 6A –0.4 3.0 5V @ 0A 2.0 5V @ 2A 1.0 0 5V @ 4A –1.0 –2.0 5V @ 6A –3.0 3.3V @ 7A –4.0 –0.6 0 1 2 3 4 5 6 0 5 Volt Output Current (Amps) 1 2 3 4 3.3 Volt Current (Amps) 8 5 6 7 BWR Models 3 3 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, D24, D48 Models D12, D24, D48 Models Start-Up from VIN Start-Up from Remote On/Off Control (VIN = nominal, 5V@ 3A, 3.3V @ 4.5A, external 1µF output capacitors.) (VIN = nominal, 5V@ 3A, 3.3V @ 4.5A, external 1µF output capacitors.) 5V Output 2V/div 5V Output 2V/div 3.3V Output 2V/div 3.3V Output 2V/div VIN Remote On/Off (Pin 4) 2msec/div 2msec/div D12 Models D24, D48 Models D24/D48 - 3.3 Volt Output Efficiency vs. Line and Load (+5V @ 600mA) D12 - 3.3 Volt Output Efficiency vs. Line and Load (+5V @ 600mA) 95 90 VIN = 10V VIN = MIN 90 85 80 Efficiency (%) Efficiency (%) 85 VIN = 12V 75 VIN = 18V 70 80 VIN = NOMINAL 75 70 VIN = MAX 65 60 65 55 60 0.70 50 1.40 2.10 2.80 3.50 4.20 4.90 5.60 6.30 0 7.00 0.78 1.56 2.33 3.11 3.89 4.67 5.44 6.22 7.00 5.33 6.00 +3.3V Output Current (Amps) +3.3V Output Current (Amps) D24/D48 - 5 Volt Output Efficiency vs. Line and Load (+3.3V @ 700mA) D12 - 5 Volt Output Efficiency vs. Line and Load (+3.3V @ 700mA) 95 90 VIN = 10V VIN = MIN 90 85 80 Efficiency (%) Efficiency (%) 85 VIN = 12V 75 70 VIN = 18V 80 VIN = NOMINAL 75 70 VIN = MAX 65 60 65 55 60 0.60 50 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 0 6.00 0.67 1.33 2.00 2.67 3.33 4.00 +5V Output Current (Amps) +5V Output Current (Amps) 9 4.67 3 3 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 Temperature Derating and Electrical Performace Curves D12 Models D24 Models Output Power vs. Ambient Temperature VIN = 24V, Natural Convection Air flow 35 35 30 30 25 25 Output Power (Watts) Output Power (Watts) Output Power vs. Ambient Temperature VIN = 12V, Natural Convection Air flow 20 15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) 20 15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.33A) 0 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 0 –40 95 100 0 15 25 25 20 15 Loading (5V @ 1.98A, 3.3V @ 7A) Loading (5V @ 3.74A, 3.3V @ 4.33A) 25 60 65 70 75 30 35 40 45 50 55 80 85 90 95 100 80 85 90 95 100 80 85 90 95 100 Loading (5V @ 5.1A, 3.3V @ 2.3A) 60 65 70 75 80 85 90 0 –40 95 100 Loading (5V @ 6A, 3.3V @ 0.7A) 0 15 20 25 30 35 40 45 50 55 60 65 70 75 Ambient Temperature (˚C) Output Power vs. Ambient Temperature VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A 35 35 30 30 25 25 Output Power (Watts) Output Power (Watts) 55 Loading (5V @ 3.74A, 3.3V @ 4.33A) Output Power vs. Ambient Temperature VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A 20 15 Natural Convection Air FlowLoading 150lfm Air Flow 20 15 Natural Convection Air FlowLoading 10 150lfm Air Flow 300lfm Air Flow 300lfm Air Flow 5 0 –40 50 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Ambient Temperature (˚C) 10 45 15 5 Loading (5V @ 6A, 3.3V @ 0.7A) 20 40 20 Loading (5V @ 5.1A, 3.3V @ 2.33A) 15 35 Output Power vs. Ambient Temperature VIN = 36V, Natural Convection Air flow 30 0 30 Output Power vs. Ambient Temperature VIN = 18V, Natural Convection Air flow 30 0 –40 25 Ambient Temperature (˚C) 35 5 20 Ambient Temperature (˚C) 35 10 Loading (5V @ 6A, 3.3V @ 0.7A) 5 Output Power (Watts) Output Power (Watts) 0 –40 Loading (5V @ 5.1A, 3.3V @ 2.3A) Loading (5V @ 6A, 3.3V @ 0.7A) 5 5 0 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 0 –40 95 100 Ambient Temperature (˚C) 0 15 20 25 30 35 40 45 50 55 60 65 70 Ambient Temperature (˚C) 10 75 BWR Models 3 3 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 Temperature Derating and Electrical Performace Curves D48 Models D48 Models Output Power vs. Ambient Temperature VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A 35 35 30 30 25 25 Output Power (Watts) Output Power (Watts) Output Power vs. Ambient Temperature VIN = 48V, Natural Convection Air flow 20 15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) 20 15 Natural Convection Air FlowLoading 10 150lfm Air Flow Loading (5V @ 5.1A, 3.3V @ 2.33A) 0 –40 300lfm Air Flow Loading (5V @ 6A, 3.3V @ 0.7A) 5 0 15 20 25 30 35 40 45 50 55 5 60 65 70 75 80 85 90 0 –40 95 100 0 15 Ambient Temperature (˚C) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Ambient Temperature (˚C) Output Power vs. Ambient Temperature VIN = 75V, Natural Convection Air flow 35 Output Power (Watts) 30 25 20 15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.33A) Loading (5V @ 6A, 3.3V @ 0.7A) 5 0 –40 0 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Ambient Temperature (˚C) ® ® INNOVATION and EXCELLENCE ISO 9001 REGISTERED DS-0481A 12/01 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. 11