Q48DB12003NRFA DELTA | Alldatasheet
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Technical content
FEATURES
High efficiency:90%@ ±12V/2.7A Size: 57.9mm x 36.8mm x 8.5mm Industry standard pin out Fixed frequency operation Input UVLO, Output OCP, OVP, OTP 1500V isolation Basic insulation No minimum load required Adjustable output voltage ISO 9001, TL 9000, ISO 14001, QS9000, OHSAS18001 certified manufacturing facility UL/cUL 60950 (US & Canada) Recognized, and TUV (EN60950) Certified CE mark meets 73/23/EEC and 93/68/EEC directives Delphi Series Q48DB, 65W Quarter Brick Dual Output DC/DC Power Modules: 48V in, ±12V, 2.7A Output The Delp hi Serie s Q48DB Quarter Brick, 48V input, positive and negative bipolar dual output, and i solated DC/DC converters are the latest offering from a world leader in powe r system and technol ogy and man ufacturing ― De lta Electro nics, Inc. This product famil y provides positive and neg ative bipolar output (output voltage is 12V) and up to 6 5 watt s of powe r in an i ndustry st andard quarter brick package size. Both output channels can be used independently. With creative design technology and optimization of component placement, these converters po ssess outstanding ele ctrical and the rmal performance, as well as extremely high relia bility under hig hly stressful ope rating co nditions. All mod els are fully protected from abnormal in put/output volt age, cu rrent, and temp erature conditions. The Delphi Series converters meet all safety requirements with basic insulation. OPTIONS Positive On/Off logic Short pin lengths available
APPLICATIONS
Telecom/DataCom Wireless Networks Optical Network Equipment Server and Data Storage Industrial/Test Equipment DATASHEET DS_ Q48DB12003_04182006
DS_Q48DB12003_04182006 TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS Q48DB12003NRFA Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous 80 Vdc Transient 100ms 100 Vdc Operating Temperature Refer to Figure 20 for measuring point -40 123 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 1500 Vdc INPUT CHARACTERISTICS Operating Input Voltage 36 48 75 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold 33 34 35 Vdc Turn-Off Voltage Threshold 31 32 33 Vdc Lockout Hysteresis Voltage 1 2 3 Vdc Maximum Input Current 100% Load, 36Vin 2.4 A No-Load Input Current 100 200 mA Off Converter Input Current 5 10 mA Inrush Current(I2t) 0.01 A2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 10 20 mA Input Voltage Ripple Rejection 120Hz 66 dB OUTPUT CHARACTERISTICS Output Voltage Set Point Vin=48V, lo=lo. Max, Tc=25℃ Vout 1,2 ±12.00 ±12.10 ±12.20 V Output Voltage Regulation Over Load lo1or lo2=lo, min to lo, max | Io1-Io2| <20% Io,max Vout 1,2 120 180 mV Over Line Vin=36V to 75V,Io1=Io2=full load Vout 1,2 60 120 mV Cross Regulation Worse Case 100 220 mV Over Temperature Tc=-40℃ to 115 ℃ 100 200 mV Total Output Voltage Range Over all load, line and temperature ±11.700 ±12.500 mV Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Peak-to-Peak Io1, Io2 Full Load, 1µF ceramic, 10µF tantalum Vout 1, 2 50 80 mV RMS Io1, Io2 Full Load, 1µF ceramic, 10µF tantalum Vout 1, 2 25 50 mV Operating Output Current Range Vout 1, 2 0 2.7 A Output DC Current-Limit Inception Lout 1＋ lout 2 115 150 % DYNAMIC CHARACTERISTICS Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs Vout 1 200 400 Positive Step Change in Output Current Iout1 or Iout2 from50% Io, max to 75% Io, max Vout 2 200 400 mV Vout 1 200 400 Negative Step Change in Output Current Iout2 or Iout1 from 75% Io, max to 50% Io, max Vout 2 200 400 mV Cross dynamic Settling Time (within 1% Vout nominal) 100 us Turn-On Transient Delay Time, From On/Off Control 10 ms Delay Time, From Input 10 ms Start-up Time, From On/Off Control 10 ms Start-up Time, From Input 10 ms Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 5000 µF EFFICIENCY 100% Load Iout1, Iout2 full load 90 % 60% Load Iout1, Iout2 60% of full load 88 % ISOLATION CHARACTERISTICS Input to Output <1 minute 1500 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 1800 pF FEATURE CHARACTERISTICS Switching Frequency 300 kHz ON/OFF Control, (Logic Low-Module ON) Logic Low Von/off at Ion/off=1.0mA 0 0.8 V Logic High Von/off at Ion/off=0.0 µA 18 V ON/OFF Current Ion/off at Von/off=0.0V 1 mA Leakage Current Logic High, Von/off=15V 300 uA Output Voltage Trim Range Pout ≦ max rated power - 10 +10 % Output Voltage Remote Sense Range Pout ≦ max rated power Output Over-Voltage Protection Over full temp range; %of nominal Vout 115 122 145 % GENERAL SPECIFICATIONS MTBF Io=80% of Io, max; Ta=40°C 2.09 M hours Weight 25 27.7 30 grams Over-Temperature Shutdown Refer to hot spot temperature 130 °C
S_Q48DB12003_04182006 8 D DESIGN CONSIDERATIONS Input Source Impedance The imp edance of the i nput sou rce co nnecting to t he DC/DC power mod ules wi ll intera ct wit h the mod ules and affect the stability. A low ac-impedance input source is recommended. If the source indu ctance is more than a few µH, we advise addin g a 10 to 100 µF electrolytic capacitor (ESR < 0. 7 Ω at 100 kHz) mounted close to the input of the module to improve the stability. Layout and EMC Considerations Delta’s DC/DC power modules are designed to operate in a wide variety of systems and applications. For design assistance with EMC co mpliance an d related P WB layout issu es, please cont act Delta’s te chnical supp ort team. An ex ternal i nput f ilter mod ule is availa ble f or easier EMC compliance d esign. Application note s to assist designers in addressing these issues are pending release. Safety Considerations The power module must be installed in compliance with the sp acing and se paration req uirements of the end-user’s safety agen cy st andard, i.e., UL60 950, CAN/CSA-C22.2 No. 60950-00 and EN60950:2000 and IEC60950-1999, if the syst em in which the po wer module is to be used must meet safety agency requirements. When the i nput so urce i s 60 Vd c o r b elow, th e po wer module me ets SEL V (safety extra-lo w volt age) requirements. If the input source is a hazardous voltage which is greater than 60 Vdc and less than or equal to 75 Vdc, for the module’s output to meet SELV requirements, all of the following must be met: The inp ut source mu st be insulated from any hazardous volt ages, inclu ding the ac mains, with reinforced insulation. One Vi pin and one Vo pin are grounded, or all the input and output pins are kept floating. The input terminals of the module are not operator accessible. If the met al baseplate is grounded the output must be also grounded. A SELV relia bility test is condu cted o n the system where the module i s u sed to en sure that und er a single fault, hazard ous voltage does not appear at the module’s output. Do not g round one of the input pins without grounding one of the o utput pins. This co nnection may allow a non-SELV voltage to appear between the output pin and ground. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. This po wer module i s no t internally fused. T o achi eve optimum safety and system protection, an input line fuse is highly re commended. The safety ag encies require a normal-blow fuse with 7A maximum rating to be installed in the ungrounded lead. A lower rated fuse can be used based on th e maximum inru sh tra nsient energy and maximum input current. Soldering and Cleaning Considerations Post solder cleaning is usually the final board assembly process before the board or system undergoes electrical testing. Inadequate cleaning and/or drying may lower the reliability of a power module and severely af fect the finished circuit board assembly test. Adequate cleaning and/or drying is especially important for un-encapsulated and/or open frame type power modules. For assistance on app ropriate solde ring and cle aning procedu res, please contact Delta’s technical support team.
The mod ules includ e an internal o utput over-curre nt protection ci rcuit, whi ch will endure cu rrent limiting for an unlimited duration during outp ut overloa d. If the output current exceeds the OCP set point, the modules will automatically shut down (hiccup mode). The modules will try to restart after shutdown. If the overload condition still exists, the module will shut down again. Thi s restart trial will continue u ntil the overload condition is corrected. Over-Voltage Protection The modul es include an internal outp ut over-volt age protection circuit, whi ch monitors the volt age on the output terminals. If this voltage exceeds the over-voltage set point, the module will shut do wn and latch of f. The over-voltage latch is re set by either cy cling the in put power or by toggling the on/off signal for one second. Over-Temperature Protection The over-te mperature protection consists of ci rcuitry that provide s protectio n from thermal damage. If the temperature exceeds the ov er-temperature thresh old the module will shut down. The module will try to rest art af ter shut down. If the over-temperature condition still exists during restart, the module will shut down again. This rest art trial will continue until the temperature is within specification. Remote On/Off The remote o n/off feature on the mo dule can be eith er negative or positive logi c. Negative logic tu rns the module on during a logic low and off during a logic high. Positive logic turns th e modules on during a lo gic high and off during a logic low. Remote on/off can b e controlled by an external switch between the on/off terminal and the V i(-) terminal. The switch can be an open collector or open drain. For ne gative logic if the remote o n/off feature is not used, plea se sho rt the on /off pin to V i(-). Fo r po sitive logic if the remote on/of f feature i s n ot use d, ple ase leave the on/off pin to floating. Vo(+) Vi(+) Vo(-) TRIM RTN Vi(-) ON/OFF Figure 16: Remote on/off implementation DS_Q48DB12003_04182006
Pin No. Name Function +Vin NC ON/OFF -Vin -Vout RTN Trim +Vout Positive input voltage No connection Remote ON/OFF Negative input voltage Negative output voltage Output Return Output voltage trim Positive output voltage DS_Q48DB12003_04182006
48V D - Dual output B - Bipolar dual 120 - 12.0V 03 - 2.7A N - Negative P - Positive R - 0.150” N - 0.145” K - 0.110” F- RoHS 6/6 (Lead Free) A - Standard functions MODEL LIST MODEL NAME INPUT OUTPUT EFF @ Full Load Q48DB12003NRFA 36V~75V 2.4A ± 12V 2.7A each 90% CONTACT: www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com Europe: Phone: +41 31 998 53 11 Fax: +41 31 998 53 53 Email: DCDC@delta-es.com Asia & the rest of world: Telephone: +886 3 4526107 ext 6220 Fax: +886 3 4513485 Email: DCDC@delta.com.tw WARRANTY Delta offers a two (2 ) year limited wa rranty. Complete warranty information i s listed on our web site or is available upon request from Delta. Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice. DS_Q48DB12003_04182006