50W Single Output DC-DC Converter SD-50 series Features : 2:1 wide input range Protections: Short circuit / Overload / Over voltage 1500VAC I/O isolation Built-in EMI filter, low ripple noise 100% full load burn-in test Fixed switching frequency at 83KHz Low cost High reliability 2 years warranty SPECIFICATION MODEL SD-50A-5 SD-50B-5 SD-50C-5 SD-50A-12 SD-50B-12 SD-50C-12 SD-50A-24 SD-50B-24 SD-50C-24 DC VOLTAGE 5V 12V 24V RATED CURRENT 10A 4.2A 2.1A CURRENT RANGE 0 ~ 10A 0 ~ 4.2A 0 ~ 2.1A RATED POWER 50W 50.4W 50.4W RIPPLE & NOISE (max.) Note.2 100mVp-p 120mVp-p 150mVp-p OUTPUT VOLTAGE ADJ. RANGE 4.5 ~ 5.5VDC 11 ~ 16VDC 23 ~ 30VDC VOLTAGE TOLERANCE Note.3 2.0% 1.0% 1.0% LINE REGULATION 0.5% 0.3% 0.2% LOAD REGULATION 0.5% 0.3% 0.2% SETUP, RISE, HOLD UP TIME 2.5s, 50ms, ------ at full load VOLTAGE RANGE A:9.2 ~ 18VDC B:19 ~ 36VDC C:36 ~ 72VDC EFFICIENCY (Typ.) 70% 73% 76% 72% 75% 78% 74% 80% 83% INPUT DC CURRENT 7A/12V 3A/24V 1.5A/48V 105 ~ 150% rated output power OVERLOAD Protection type : Hiccup mode, recovers automatically after fault condition is removed PROTECTION 5.75 ~ 6.75V/10% load 16.8 ~ 20V/10% load 31.5 ~ 37.5V/10% load OVER VOLTAGE Protection type : Hiccup mode, recovers automatically after fault condition is removed -10 ~ +60 (Refer to output load derating curve) WORKING TEMP. 20 ~ 90% RH non-condensing WORKING HUMIDITY -20 ~ +85 , 10 ~ 95% RH ENVIRONMENT STORAGE TEMP., HUMIDITY TEMP. COEFFICIENT 0.03%/ (0 ~ 50 VIBRATION 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes SAFETY STANDARDS Design refer to LVD WITHSTAND VOLTAGE SAFETY & I/P-O/P:1.5KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC ISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25 / 70% RH EMC (Note 4) Compliance to EN55022 (CISPR22) Class B EMI CONDUCTION & RADIATION EMS IMMUNITY Compliance to EN61000-4-2,3,4,6,8; ENV50204, EN55024, heavy industry level, criteria A MTBF 365.6K hrs min.(SD-50A) 357.5K hrs min.(SD-50B) 368.5K Hrs min.(SD-50C) MIL-HDBK-217F (25 ) OTHERS DIMENSION 159*97*38mm (L*W*H) 0.48Kg; 24pcs/12.7Kg/0.75CUFT PACKING 1. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25 of ambient temperature. NOTE 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance : includes set up tolerance, line regulation and load regulation. 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on http://www.meanwell.com) File Name:SD-50-SPEC 2010-10-18 3.5 3-M3 50W Single Output DC-DC Converter SD-50 series Mechanical Specification Case No. 901 Unit:mm 152.5 1 2 3 4 5 4.5 78 24 159 6.5 150 Terminal Pin No. Assignment Pin No. Assignment Pin No. Assignment 1 DC INPUT V+ 4 DC OUTPUT -V 2 DC INPUT V- 5 DC OUTPUT +V 3 FG 22 117 Block Diagram fosc : 83KHz RECTIFIERS RECTIFIERS EMI POWER +V I/P & & FILTER SWITCHING -V FILTER FILTER FG DETECTION PWM O.L.P. CIRCUIT CONTROL O.V.P. Derating Curve Static Characteristics(SD-50C-24V) Ta=25 SD-50B,C 32 350 100 28 300 80 24 250 SD-50A 20 200 60 16 150 40 12 100 20 8 50 -10 0 10 20 30 40 50 60 (VERTICAL) 25 30 35 40 45 50 55 60 65 70 72 -10 0 45 55 (HORIZONTAL) AMBIENT TEMPERATURE ( ) INPUT VOLTAGE (V) File Name:SD-50-SPEC 2010-10-18 3.5 2-M3 LOAD (%) 8.2 9.5 9 18.5 65 18 9 OUTPUT VOLTAGE (V) 3.5 3.5 28.5 84.5 7 38 97 OUTPUT RIPPLE (mVp-p)