• SINGLE OUTPUT UP TO 15A • INDUSTRY STANDARD FOOTPRINT • ADJUSTABLE OUTPUT VOLTAGE • NO MINIMUM LOAD • UNDER-VOLTAGE LOCKOUT • HIGH EFFICIENCY UP TO 91% • COMPACT 2.40 X 2.28 X 0.50 INCH PACKAGE • FIXED SWITCHING FREQUENCY • HALT TESTED HEC50-S single output DC/DC converters provide up to 50 watts of output power in an industry standard half-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 15A 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 HEC50 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 All specifications are typical at nominal input, full load and 25ºC otherwise noted OUTPUT SPECIFICATIONS GENERAL SPECIFICATIONS Output power Voltage accuracy 50 Watts max Full load and nominal Vin Voltage adjustability (Note 1) + 10% , -20% Minimum load Line regulation Load regulation 0% LL to HL at FL 0% to 100% FL Remote sense (Note 1) Transient response recovery time Over voltage protection threshold (Hiccup) Over current protection threshold Short circuit protection 7 See table Isolation capacitance 2500 pF, max See table Switching frequency 300 KHz, typ 100mVp-p 25% load step change Isolation voltage 200uS Approvals and standard (Note 5) IEC60950, UL60950, EN60950 Case material Open with Aluminum base-plate Weight MTBF 50g (1.76 oz) Bellcore TR-NWT-000332, Tc=40, Io=80%, max. 115% ~ 130% of Vout ENVIRONMENTAL SPECIFICATIONS 110% ~ 140% of Iout Rated Operating base-plate temperature range (Note 6) Hiccup, automatics recovery Over temperature protection Humidity max, Non-condensing 24V input 48V input 24V input UVLO start-up voltage 48V input 24V input UVLO shuntdown voltage 48V input Storage temperature range Input filter (Note 3) 18 – 36VDC 36 – 75VDC 17V typ. 34V typ. 15V typ. 32V typ. L-C type 5V/ms,max (Complies with ETS300 132 part 4.4) 50VDC 24V input Input surge voltage 100mS max 100VDC 48V input Nominal Vin and constant Start up time 25mS typ. resistive load Input reflected-ripple current 24V input 50mAp-p (5Hz to 20 MHz, 12uH source impedance) 48V input 20mAp-p Input voltage variation dv/dt Remote ON/OFF(Note 4) (Positive logic) (Negative logic) ON=Open or 3.5V < Vr < 15V, IIN=50 max. OFF=Short or 0V < Vr < 1.2V, IIN=1m max. ON=Short or 0V < Vr < 1.2V, IIN=1m max. OFF=Open or 3.5V < Vr < 15V, IIN=50 max. -40ºC to +100ºC 95% -55ºC to +125ºC Thermal shock Vibration 3 x 106 hrs 110ºC INPUT SPECIFICATIONS Input voltage range 1600 VDC, min. 1000 VDC, min. 1000 VDC, min. 10 ohms, min 0.02% / ºC, max Temperature coefficient See table Input to Output Input to Case Output to Case Isolation resistance 10% of Vout Ripple and noise(Note 2) 20MHz bandwidth Efficiency ± 1.5% MIL-STD-810D 10~55Hz, 2G, 3minutes period, 30minutes along X,Y and Z EMC CHARACTERISTICS Conducted emissions EN55022 (Note 7) EN55022 (Note 7) Radiated emissions EN55022 ESD Radiated immunity Fast transient Surge Conducted immunity 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 Model Number Input Range Output Voltage Output Current HEC50-24S1P8 18 – 36 VDC 1.8 VDC 15 A 4 mV HEC50-24S2P5 18 – 36 VDC 2.5 VDC 15 A HEC50-24S3P3 18 – 36 VDC 3.3 VDC 15 A HEC50-24S05 18 – 36 VDC 5 VDC HEC50-24S15 18 – 36 VDC HEC50-48S1P8 HEC50-48S2P5 Line Load Input regulation regulation Current(8) (9) Eff (%) 6 mV 1.36 A 86 5 mV 8 mV 1.86 A 87 7 mV 10 mV 2.40 A 89 10 A 10 mV 15 mV 2.40 A 90 15 VDC 3.3 A 30 mV 45 mV 2.40 A 89 36 – 75 VDC 1.8 VDC 15 A 4 mV 6 mV 0.67 A 87 36 – 75 VDC 2.5 VDC 15 A 5 mV 8 mV 0.92 A 89 HEC50-48S3P3 36 – 75 VDC 3.3 VDC 15 A 7 mV 10 mV 1.19 A 90 HEC50-48S05 36 – 75 VDC 5 VDC 10 A 10 mV 15 mV 1.19 A 91 HEC50-48S15 36 – 75 VDC 15 VDC 3.3 A 30 mV 45 mV 1.20 A 90 Note 1. Maximum output deviation is 10% inclusive of remote sense. 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. 2. Measured with a 1uF M/C and a 10uF T/C. 3. An external filter capacitor is required for normal operation. The capacitor should be capable of handing 1A ripple current for 48V/24V models. Power mate suggest: Nippon chemi-con KMF series, 220F/100V, ESR 90m. 4. The negative/ positive logic and pin length are optional ( see table ). The pin voltage is referenced to negative input. 5. 24V input models safety approval pending. 6. Heat sink is optional and P/N: 7G-0021, 7G-0022, 7G-0023, 7G-0024. 7. The HEC50 meets level A and level B conducted emissions only with external components connected before the input pin to the converter. 8. Maximum value at nominal input voltage and full load. 9. Typical value at nominal input voltage and full load. 10. BASEPLATE GROUNDINGBase-plate should be grounded at one of the four screw bolts prior to operation. 11. The converter is provided by basic insulation. ( Note 10 ) PIN CONNECTION EXTERNAL OUTPUT TRIMMING Output can be externally trimmed by using the method shown below. TRIM UP TRIM DOWN 7 6 RU 8 RD 7 PRODUCT OPTIONS TABLE PIN Define Diameter Option Suffix 1 2 3 4 5 6 7 8 9 - INPUT CASE CTRL + INPUT - OUTPUT - SENSE TRIM + SENSE + OUTPUT 0.04 Inches 0.04 Inches 0.04 Inches 0.04 Inches 0.08 Inches 0.04 Inches 0.04 Inches 0.04 Inches 0.08 Inches Negative remote ON/OFF logic, 0.20” pin length (standard) - Negative remote ON/OFF logic, 0.145” pin length -L Negative remote ON/OFF logic, 0.11” pin length -K Positive remote ON/OFF logic, 0.20” pin length -P Positive remote ON/OFF logic, 0.145” pin length -S Positive remote ON/OFF logic, 0.11” pin length -M Example HEC50-48S3P3-P