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| * SINGLE OUTPUT UP TO 35A * INDUSTRY STANDARD FOOTPRINT * NO MINIMUM LOAD * ADJUSTABLE OUTPUT VOLTAGE * UNDER-VOLTAGE LOCKOUT * HIGH EFFICIENCY UP TO 90% * COMPACT 2.28 X 1.45 X 0.50 INCH PACKAGE * FIXED SWITCHING FREQUENCY QEB125 single output DC/DC converters provide up to 125 watts of output power in an industry standard quarter-brick package and footprint. These units are specifically designed to meet the power needs of low-voltage silicon. All models feature a wide input range, trimmable output voltage and a 35A current rating. Remote sense and remote on/off facilities are included as standard, and the converters are comprehensively protected against over-current, over-voltage and over-temperature conditions. The QEB125 converters are especially suited to telecom, networking and industrial application. UL E193009 TUV R50020744 CB JPTUV-5363 CE MARK T E C H N I C A L S P E C I F I C AT I O N OUTPUT SPECIFICATIONS Output power Voltage accuracy Voltage adjustability Minimum load Line regulation Load regulation Remote Sense Ripple and noise Temperature coefficient Transient response recovery time Over voltage protection threshold(Non-latching Hiccup) Over Current Protection threshold Short circuit protection 20MHz bandwidth (Measured with a 1uF M/C and a 10uF T/C) 25% load step change LL to HL at FL No load to Full load Full load and nominal Vin (Note1) All specifications are typical at nominal input, full load and 25C otherwise noted GENERAL SPECIFICATIONS 125 Watts max 1.5% + 10% , -20% None 0.2% See table 10% of Vout 100mVp-p Isolation resistance Isolation capacitance Switching frequency Approvals and standard Case material Weight (approx) MTBF Bellcore TR-NWT-000332, Tc=40 C , Io=80%,max Efficiency Isolation voltage Input to Output Input to Case Output to Case See table 1600VDC,min 1000VDC,min 1000VDC,min 10 ohms, min 2500 pF, max 270 KHz, typ IEC60950, UL60950, EN60950 Aluminum base plate 42g (1.46 oz) 2.5 x 106 hrs 7 I0.02% / C, max 200uS 120% Vout max 110% ~ 140% of lout Rated Hiccup, automatics recovery ENVIRONMENTAL SPECIFICATIONS Operating base-plate temperature range (Note 4) Over temperature protection Storage temperature range Thermal shock -40C to +100C 110C, max -55C to +125C MIL-STD-810D 10~55Hz, 2G, 3minutes period, 30minutes along X,Y and Z 95% INPUT SPECIFICATIONS Input voltage range Under voltage lockout Input filter (Note 2) Input surge voltage 100mS max Start up time Nominal Vin and constant resistor load Power up Remote ON/OFF 48V nominal input Power up Power down 36 - 75VDC 34V typ. 32V typ. L-C type 100VDC 25mS typ 25mS typ Vibration Humidity , Max , Non-Condensing EMC CHARACTERISTICS Conducted emissions Radiated emissions ESD Radiated immunity Fast transient Surge Conducted immunity EN55022 (Note 5) EN55022 (Note 5) EN55022 EN61000-4-2 EN61000-4-3 EN61000-4-4 EN61000-4-5 EN61000-4-6 Level A Level B Level A Perf. Criteria2 Perf. Criteria2 Perf. Criteria2 Perf. Criteria2 Perf. Criteria2 Remote ON/OFF (Note3) (Negative logic) (Positive logic) DC-DC DC-DC DC-DC DC-DC ON OFF ON OFF ION/OFF = 1mA max Short or 0V < Vr < 1.2V Open or 3.5V < Vr < 15V Open or 3.5V < Vr < 15V Short or 0V < Vr < 1.2V Model Number QEB125-48S1P8 QEB125-48S2P5 QEB125-48S3P3 QEB125-48S05 Input Range 36 - 75 VDC 36 - 75 VDC 36 - 75 VDC 36 - 75 VDC Output Voltage 1.8 VDC 2.5 VDC 3.3 VDC 5 VDC Output Current 35A 35A 30A 25A Eff (%) 84 86 88 90 (6) Load regulation 5.4mV 7.5mV 10mV 15mV Note 1. 2. 3. 4. 5. 6. 7. 8. Maximum output deviation is 10% inclusive of trim. If remote sense is not being used, the +V sense should be connected to its corresponding +OUTPUT and likewise the -sense should be connected to its corresponding -OUTPUT. An external filter capacitor is required for normal operation. The capacitor should be capable of handing 1A ripple current for 48V models. Power mate suggest: Nippon chemi-con KMF series, 220 F/100V, ESR 90m . The negative / positive logic and pin length are optional ( see table ). The pin voltage is referenced to negative input. Heat sink is optional and P/N7G-00297G-00307G-00317G-0032. The QEB125 meets level A and level B conducted emissions only with external components connected before the input pin to the converter. Typical value at nominal input voltage and full load BASEPLATE GROUNGINGBase-plate should be grounded at one of the four screw bolts prior to operation. The converter is provided by basic insulation. (7) EXTERNAL OUTPUT TRIMMING Output can be externally trimmed by using the method shown below. TRIM UP TRIM DOWN PIN CONNECTION PIN 1 2 3 4 5 6 7 8 Define - INPUT ON/OFF + INPUT - OUTPUT - SENSE TRIM + SENSE + OUTPUT PRODUCT OPTIONS TABLE Option Suffix Negative remote ON/OFF logic, 0.20" pin length (standard) Negative remote ON/OFF logic, 0.145" pin length Negative remote ON/OFF logic, 0.11" pin length Positive remote ON/OFF logic, 0.20" pin length Positive remote ON/OFF logic, 0.145" pin length Positive remote ON/OFF logic, 0.11" pin length -L -K -P -S -M 7 6 RU 6 5 RD ExampleQEB125-48S3P3-P |
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