QUARTER-BRICK SERIES Single Output Value Products

Quarter-Brick Series 50 A DC-DC QUARTER-BRICK SERIES Single Output Value Products High efficiency topology High output current Low profile, 0.300 inch (7.62 mm) height Unprecedented useable output power levels Wide operating ambient temperature range, -40 C to +85 C 80% to 110% output trim Basic insulation Overvoltage and overtemperature protection Remote ON/OFF Approvals to EN60950-1 VDE and UL/cUL60950 100 V, 100 ms input voltage transient rated Monotonic startup behavior into normal and prebiased loads Secondary side control, no optocouplers, fast transient load response Available RoHS compliant This is a new high efficiency, open frame, The output voltage on each model is isolated 50 A conver ter series in an adjustable from 80% to 110% of the industry standar d quarter-brick package. nominal value. T ypical ef ficiency for the The Typhoon quarter-brick Series delivers 1.8 V model is 90.4%. This conver high output current at low voltages, and has a remote ON/OFF capability. Over- excellent useable output power for today's current and over-voltage protection high-end applications. The design takes features are included as standard. With advantage of open-frame construction to full international safety approval including provide a low mass, low thermal EN60950-1 VDE and UL/cUL60950, the impedance single board design. The Quarter-Brick converter reduces Typhoon quarter-brick single Value series compliance costs and time to market. ter also features an input voltage range of 36 Vdc to 75 Vdc and output voltages of 1.2 V, 1.5 V and 1.8 V. [ 2 YEAR WARRANTY ] 1 File Name: lf_quar ter_brick_s_value.pdf Rev (01): 18 Nov 2005

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC Stresses in excess of the maximum ratings can cause permanent damage to the device. Operation of the device is not implied at these or any other conditions in excess of those given in the specification. Exposure to absolute maximum ratings can adversely affect device reliability. Absolute Maximum Ratings Input voltage - continuous V in (cont) -0.3 75 Vdc V in(+) - V in(-) Input voltage - peak/surge V in (peak) -0.3 100 Vdc Transients of 100 ms or less, in duration Input voltage - remote pin V rem (peak) -0.3 75 Vdc Peaks of any duration Operating temperature T op -40 120 C Measured at hotspot Storage temperature T storage -55 125 C Output power (LQS50A48-1V2J) Pout (max) 60 W Output power (LQS50A48-1V5J) Pout (max) 75 W Output power (LQS50A48-1V8J) Pout (max) 90 W All specifications are typical at nominal input Vin = 48 V, full rated resistive at 25 ºC ambient unless otherwise specified. Input Characteristics Input voltage - operating V in (oper) 36 48 75 Vdc Input current - no load l in 70 madc V in (min) - V in (max), enabled Input current - quiescent l in (off) 5 madc Converter disabled Inrush current (i 2 t) l inrush 0.01 A 2 s Inrush current ratio I t /I m 22 Input ripple rejection 50 db Frequency <1 khz Input fuse 10 A Slow Blow/Antisurge HRC recommended 200 V Rating. See Application Note 141 Turn On/Off Input voltage - turn on V in (on) 35.5 36 Vdc Input voltage - turn off V in (off) 33 33.5 Vdc Turn on delay - enabled, T delay 10 15 ms With the Remote ON/OFF signal then power applied (power) asserted, time from when V in > V in (oper) until Vout is within total regulation band Turn on delay - power T delay 10 15 ms With V in = V in (nom), then applied, then enabled (enable) Remote ON/OFF asserted, time until Vo is within total error band Rise time T rise 2 3 ms From 10% to 90%, full resistive load, no external capacitance 2

Signal Electrical Interface Quarter-Brick Series 50 A DC-DC Characteristic - Signal Name Symbol Min Typ Max Units Notes and Conditions At remote ON/OFF (control) pin See Notes 1 and 2 Open collector or equivalent compatible Control pin open circuit voltage V ih 3.5 5 V I ih = 0 µa; open circuit voltage High level input voltage V ih 2.4 V Converter guaranteed ON when control pin is greater than V ih (min) High level input current I ih 10 µa Current flowing into control pin when pin is pulled high (max. at V ih = 75 V) Acceptable high level I ih (leakage) -10 µa Acceptable leakage current from leakage current signal pin into the open collector driver (neg = from converter) Low level input voltage V ii 0.4 V Converter guaranteed off when control pin is less than V il (max) Low level input current I il (max) -0.45-0.5 ma V ii = 0.0 V, maximum source current from converter with short circuit Common Protection/Control Overtemperature shutdown Tots 120 125 130 C Hotspot temperature, threshold non-latching shutdown protection Remote sense compensation 10 % % of Vo (nom), compensation includes trim. See Application Note 141 Reliability and Service Life Mean time between failure MTBF 3,866,933 Hours Telcordia Tech. SR-332 Tamb = 25 ºC, Tcase = 20 ºC rise airflow = 400 LFM, V in = V in (nom), I out = 50% I out (max) Isolation Input to output test voltage 2250 Vdc Test duration 1 s Input to output capacitance 1200 pf Input to output resistance 10 MΩ Measured with 500 Vdc Input to output insulation system Basic 3 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC Other Specifications Switching frequency f sw 480 khz Fixed frequency (all models) Environmental Requirements Thermal performance -40 120 C Hotspot temperature Altitude 3000 m Derate total max. output current by 20% 9843 ft Derate total max. output current by 20% 10000 m Derate total max. output current by 50% 32808 ft Derate total max. output current by 50% Type Parameter Reference Test Level Air temperature IEC 60068-2-1 Ab/Ad: -40 ºC, 16 h cold IEC 680068-2-2 Bb/Bd: dry heat +70 ºC, 16 h IEC 68-2-14 Nb: Rate of -5 ºC/+45 ºC, 0.5 ºC/min 2 cycles, 3 h each change Relative humidity IEC60068-2-56 +35 ºC, 93% RH, 4 days 50% of samples powered Cb: damp heat, steady at 10% load and 50% unpowered state Vibration IEC60068-2-6 3 axes, 5 sweeps per axis unpowered on test card Fc: sinusoidal Freq. range and displacement 5-9 Hz, 1.2 mm. Freq. range and acceleration 9-200 Hz, 10 m/s 2 Shock and bump IEC 60068-2-29 100 bumps each of 6 directions, mounted on powered on Eb: bump test card, shock spectrum half-sine, duration EMC Electromagnetic Compatibility Phenomenon Port Standard Test level Notes and conditions Immunity: ESD Enclosure EN61000-4-2 6 kv contact Level 3, (output within specification) 8 kv air Level 3, (output within specification Radiated field Enclosure EN61000-4-3 10 V/m Level 3, (output within specification) X and Y axes Conducted DC power EN61000-4-6 10 V Input transients DC power 100 V, With recommended Class B external filter, no load, 10 J 100 ms (output remains within ±9%) 4

Quarter-Brick Series 50 A DC-DC Standards Compliance List Characteristic EN60950-1 UL/cUL60950 VDE 3rd edition Safety Agency Approvals Standard Category UL/cUL60950 File Number E135734/60950 VDE Certificate No. 10401-3336-0197 Licence No. 40005017 Material Ratings Characteristic - Signal Name Notes and Conditions Flammability rating Material type UL94V-0 FR4 PCB Model Numbers Model Input Output Overvoltage Output Current Typical Number Voltage Voltage Protection (Max.) Efficiency LQS50A48-1V2J 36-75 Vdc 1.2 V 1.5 V 50 A 88.5% LQS50A48-1V5J 36-75 Vdc 1.5 V 1.9 V 50 A 89.5% LQS50A48-1V8J 36-75 Vdc 1.8 V 2.3 V 50 A 90.4% RoHS Compliance Ordering Information The J at the end of the Partnumber indicates that the Part is Pb-free (RoHS 6/6 compliant). TSE RoHS 5/6 (non Pb-free) compliant versions may be available on special request, please contact your local sales representative for details. 5 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC LQS50A48-1V2J Model Input Characteristics Input current - operating I in 1.42 Adc V in = V in (nom) ; I out = I out (max) ; V o = V o (nom) Input current - maximum I in (max.) 1.92 Adc V in = V in (min) ; I out = I out (max) ; V o = V o (nom), measured at converter Input Capacitor ripple current I in (ripple) 35 ma rms I out = I out (max), measured 100 ma pk-pk without standard filter. See Application Note 141 Reflected ripple current I in (refl) 3 ma rms I out = I out (max), measured 10 ma pk-pk with standard filter. See Application Note 141 Input capacitance - C input 3.6 µf Internal to converter Internal Input capacitance - C bypass 33 µf Recommended customer External bypass added capacitance, <0.7 Ω ESR LQS50A48-1V2J Model Electrical Characteristics - O/P Nominal set-point voltage Vo (nom) 1.182 1.20 1.218 Vdc V in = V in (nom) ; I out = I out (nom) Total regulation band V o 1.164 1.236 Vdc For all line, static load and temperature until end of life Line regulation 0.01 0.1 % I out = I out (nom), V in (min) to V in (max) Load regulation 0.02 0.2 % V in = V in (nom), I out (min) to I out (max) Temperature regulation 0.02 ±%/ºC V in = V in (nom), I out = I out (max) Output current continuous Iout 0 50 Adc Output current - short circuit I sc 15 A rms Continuous, unit auto recovers from short, V o < 100 mv Load transient response - V dynamic Peak deviation for 50% to 75% peak deviation 10 mv step load, di/dt = 100 ma/µs, 70 mv step load, di/dt = 1 A/µs Load transient response - T recovery 20 µs Settling time to within 1% of recovery output set point voltage for 50% to 75% load step External load capacitance C ext 0 40,000 µf Higher load capacitance values may be possible. Contact Artesyn Technologies for details Output voltage - noise V p-p 20 60 mv pk-pk Measurement bandwidth 20 MHz V rms 10 20 mv rms See Application Note 141 for test set-up 6

Quarter-Brick Series 50 A DC-DC LQS50A48-1V2J Model Protection and Control Features Overvoltage setpoint V ov 1.38 1.62 Vdc Non-latching. See Application Note 141 for details Overcurrent limit inception I oc 52.5 57.5 62.5 Adc V o = 90% of V o (nom) Output voltage trim range 110 % Trim up (% of V o nom ) Limit output to 60 Watts 80 % Trim down (% of V o nom ) See Application Note 141 for details of trim equations and trim curves Open sense voltage 1.20 Vdc LQS50A48-1V2J Model Efficiency Efficiency η 87.3 88.5 % I out = 100% l out (max), V in = V in (nom) Efficiency η 90 % I out = 50% I out (max), V in = V in (nom) 7 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC LQS50A48-1V5J Model Input Characteristics Input current - operating I in 1.74 Adc V in = V in (nom) ; I out = I out (max) ; V o = V o (nom) Input current - maximum I in (max.) 2.36 Adc V in = V in (min) ; I out = I out (max) ; V o = V o (nom), measured at converter Input Capacitor ripple current I in (ripple) 35 ma rms I out = I out (max), measured 100 ma pk-pk without standard filter. See Application Note 141 Reflected ripple current I in (refl) 4 ma rms I out = I out (max), measured 15 ma pk-pk with standard filter. See Application Note 141 Input capacitance - C input 3.6 µf Internal to converter Internal Input capacitance - C bypass 33 µf Recommended customer External bypass added capacitance, <0.7 Ω ESR LQS50A48-1V5J Model Electrical Characteristics - O/P Nominal set-point voltage Vo (nom) 1.478 1.500 1.523 Vdc V in = V in (nom) ; I out = I out (nom) Total regulation band V o 1.455 1.545 Vdc For all line, static load and temperature until end of life Line regulation 0.01 0.1 % I out = I out (nom), V in (min) to V in (max) Load regulation 0.02 0.2 % V in = V in (nom), I out (min) to I out (max) Temperature regulation 0.02 ±%/ºC V in = V in (nom), I out = I out (max) Output current continuous Iout 0 50 Adc Output current - short circuit I sc 15 A rms Continuous, unit auto recovers from short, V o < 100 mv Load transient response - V dynamic Peak deviation for 50% to 75% peak deviation 15 mv step load, di/dt = 100 ma/µs, 70 mv step load, di/dt = 1 A/µs Load transient response - T recovery 20 µs Settling time to within 1% of recovery output set point voltage for 50% to 75% load step External load capacitance C ext 0 40,000 µf Higher load capacitance values may be possible. Contact Artesyn Technologies for details Output voltage - noise V p-p 20 60 mv pk-pk Measurement bandwidth 20 MHz V rms 10 20 mv rms See Application Note 141 for test set-up 8

Quarter-Brick Series 50 A DC-DC LQS50A48-1V5J Model Protection and Control Features Overvoltage setpoint V ov 1.725 1.800 Vdc Non-latching. See Application Note 138 for details Overcurrent limit inception I oc 52.5 57.5 62.5 Adc V o = 90% of V o (nom) Output voltage trim range 110 % Trim up (% of V o nom ) Limit output to 75 Watts 80 % Trim down (% of V o nom ) See Application Note 138 for details of trim equations and trim curves Open sense voltage 1.50 Vdc LQS50A48-1V5J Model Efficiency Efficiency η 88.5 89.5 % I out = 100% l out (max), V in = V in (nom) Efficiency η 91 % I out = 50% I out (max), V in = V in (nom) 9 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC LQS50A48-1V8J Model Input Characteristics Input current - operating I in 2.07 Adc V in = V in (nom) ; I out = I out (max) ; V o = V o (nom) Input current - maximum I in (max.) 2.82 Adc V in = V in (min) ; I out = I out (max) ; V o = V o (nom), measured at converter Input Capacitor ripple current I in (ripple) 35 ma rms I out = I out (max), measured 100 ma pk-pk without standard filter. See Application Note 141 Reflected ripple current I in (refl) 6 ma rms I out = I out (max), measured 20 ma pk-pk with standard filter. See Application Note 141 Input capacitance - C input 3.6 µf Internal to converter Internal Input capacitance - C bypass 33 µf Recommended customer External bypass added capacitance, <0.7 Ω ESR LQS50A48-1V8J Model Electrical Characteristics - O/P Nominal set-point voltage Vo (nom) 1.773 1.800 1.827 Vdc V in = V in (nom) ; I out = I out (nom) Total regulation band V o 1.746 1.854 Vdc For all line, static load and temperature until end of life Line regulation 0.01 0.1 % I out = I out (nom), V in (min) to V in (max) Load regulation 0.02 0.2 % V in = V in (nom), I out (min) to I out (max) Temperature regulation 0.02 ±%/ºC V in = V in (nom), I out = I out (max) Output current continuous Iout 0 50 Adc Output current - short circuit I sc 15 A rms Continuous, unit auto recovers from short, V o < 100 mv Load transient response - V dynamic Peak deviation for 50% to 75% peak deviation 20 mv step load, di/dt = 100 ma/µs 70 mv step load, di/dt = 1 A/µs Load transient response - T recovery 20 µs Settling time to within 1% of recovery output set point voltage for 50% to 75% load step External load capacitance C ext 0 40,000 µf Higher load capacitance values may be possible. Contact Artesyn Technologies for details Output voltage - noise V p-p 20 60 mv pk-pk Measurement bandwidth 20 MHz V rms 10 20 mv rms See Application Note 141 for test set-up 10

Quarter-Brick Series 50 A DC-DC LQS50A48-1V8J Model Protection and Control Features Overvoltage setpoint V ov 2.00 2.25 Vdc Non-latching. See Application Note 141 for details Overcurrent limit inception I oc 52.5 57.5 62.5 Adc V o = 90% of V o (nom) Output voltage trim range 110 % Trim up (% of V o nom ) Limit output to 90 Watts 80 % Trim down (% of V o nom ) See Application Note 141 for details of trim equations and trim curves Open sense voltage 1.80 Vdc LQS50A48-1V8J Model Efficiency Efficiency η 89.3 90.4 % I out = 100% l out (max), V in = V in (nom) Efficiency η 92 % I out = 50% I out (max), V in = V in (nom) 11 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC LQS50A48-1V2J Model OUTPUT CURRENT (A) 60 50 40 30 20 10 0 25 35 45 55 65 75 85 2 m/s (400 LFM) 1.5 m/s (300 LFM) 1 m/s (200 LFM) 0.5 m/s (100 LFM) EFFICIENCY (%) 92 90 88 86 84 82 35 43 51 59 67 75 AMBIENT TEMPERATURE ( C) INPUT VOLTAGE (V) Figure 1: Derating Curve with Forced Air Figure 2: Efficiency vs. Line 100 EFFICIENCY (%) 90 80 70 36 Vin 48 Vin 75 Vin 60 0 10 20 30 40 50 OUTPUT CURRENT (A) Figure 3: Efficiency vs. Load Figure 4: Turn-On Characteristic, Top (Vout), Bottom (Vin) Figure 5: Control On/Off Characteristic, Top (Vout), Bottom (Remote ON/OFF) Figure 6: Typical Transient Response 75-50% Step Load Change (1 A/µs), Top (Vout), Bottom (Iout) 12

Quarter-Brick Series 50 A DC-DC LQS50A48-1V2J Model Figure 7: Typical Transient Response 50-75% Step Load Change ( 1A/µs), Top (Vout), Bottom (Iout) Figure 8: Typical Output Ripple and Noise Measurement Figure 9: Current Limit Characteristic Figure 10: Turn-Off Characteristic 13 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC LQS50A48-1V5J Model OUTPUT CURRENT (A) 60 50 40 30 20 10 0 25 35 45 55 65 75 85 2 m/s (400 LFM) 1.5 m/s (300 LFM) 1 m/s (200 LFM) 0.5 m/s (100 LFM) EFFICIENCY (%) 92 90 88 86 84 82 35 43 51 59 67 75 AMBIENT TEMPERATURE ( C) INPUT VOLTAGE (V) Figure 11: Derating Curve with Forced Air Figure 12: Efficiency vs. Line 100 EFFICIENCY (%) 90 80 70 36 Vin 48 Vin 75 Vin 60 0 10 20 30 40 50 OUTPUT CURRENT (A) Figure 13: Efficiency vs. Load Figure 14: Turn-On Characteristic, Top (Vout), Bottom (Vin) Figure 15: Control On/Off Characteristic, Top (Vout), Bottom (Remote ON/OFF) Figure 16: Typical Transient Response 75-50% Step Load Change (1 A/µs), Top (Vout), Bottom (Iout) 14

Quarter-Brick Series 50 A DC-DC LQS50A48-1V5J Model Figure 17: Typical Transient Response 50-75% Step Load Change ( 1 A/µs), Top (Vout), Bottom (Iout) Figure 18: Typical Output Ripple and Noise Measurement Figure 19: Current Limit Characteristic Figure 20: Turn-Off Characteristic 15 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC LQS50A48-1V8J Model OUTPUT CURRENT (A) 60 50 40 30 20 10 0 25 35 45 55 65 75 85 2 m/s (400 LFM) 1.5 m/s (300 LFM) 1 m/s (200 LFM) 0.5 m/s (100 LFM) EFFICIENCY (%) 92 90 88 86 84 82 35 43 51 59 67 75 AMBIENT TEMPERATURE ( C) INPUT VOLTAGE (V) Figure 21: Derating Curve with Forced Air Figure 22: Efficiency vs. Line 100 EFFICIENCY (%) 90 80 70 36 Vin 48 Vin 75 Vin 60 0 10 20 30 40 50 OUTPUT CURRENT (A) Figure 23: Efficiency vs. Load Figure 24: Turn-On Characteristic, Top (Vout), Bottom (Vin) Figure 25: Control On/Off Characteristic, Top (Vout), Bottom (Remote ON/OFF) Figure 26: Typical Transient Response 75-50% Step Load Change (1 A/µs), Top (Vout), Bottom (Iout) 16

Quarter-Brick Series 50 A DC-DC LQS50A48-1V8J Model Figure 27: Typical Transient Response 50-75% Step Load Change (1 A/µs), Top (Vout), Bottom (Iout) Figure 28: Typical Output Ripple and Noise Measurement Figure 29: Current Limit Characteristic Figure 30: Turn-Off Characteristic 17 www.artesyn.com

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC 2.30 (58.4) 0.15 (3.8) 2.000 (50.80) ø0.040 ±0.002 (ø1.02 ±0.05) (6 pls) 1.45 (36.8) 0.300 (7.62) 0.300 (7.62) 0.725 ±0.020 (18.42 ±0.51) 1 2 3 TOP VIEW 8 7 6 5 4 ø 0.062 ±0.002 (ø1.57 ±0.05) (2 pls) 0.150 (3.81) 0.150 (3.81) CLEARANCE (See Option Table) HEIGHT (See Option Table) 0.188 (4.78) 2.30 (58.4) 0.15 (3.8) 2.000 (50.80) 1.45 (36.8) 0.300 (7.62) 0.300 (7.62) 0.725 ±0.020 (18.42 ±0.51) 1 2 3 ø 0.054 ±0.003 (ø1.37 ±0.08) (6 pls) 8 7 6 5 4 RECOMMENDED HOLE PATTERN 0.150 (3.81) 0.150 (3.81) ø 0.074 ±0.003 (ø1.88 ±0.08) (2 pls) Dimensions in Inches (mm) Tolerances (unless otherwise specified) x.xx ±0.02 (x.x ±0.5) x.xxx ±0.010 (x.xx ±0.25) Pin Connections Pin No. Function Dimension Options Option Clearance Height 1 Vin+ 2 ON/OFF 3 Vin- 4 Vout- 5 Sense- 6 Trim 7 Sense+ 8 Vout A 0.030 (0.76) min. 0.300 (7.62) max. E 0.070 (1.78) min. 0.340 (8.64) max. Figure 31: Mechanical Drawing, Dimension Options and Pinout Table for Output Current of 50 A or Less 18

Quarter-Brick Series SXA10 Series 50 A 10W DC-DC DC/DC Note 1 The remote ON/OFF pin is referenced to Vin-. Note 2 Active low Remote ON/OFF is available. Standard product is active high. When ordering active low parts, designate with the Suffix R e.g. LQS50A48-1V8RAJ. See Application Note 141 for detailed information regarding ON/OFF control implementation. CAUTION: Hazardous internal voltages and high temperatures. Ensure that unit is accessible only to trained personnel. The user must provide the recommended fusing in order to comply with safety approvals. 19 www.artesyn.com

Quarter-Brick Series 50 A DC-DC NORTH AMERICA e-mail: sales.us@artesyn.com 800 769 7274 +508 628 5600 EUROPEAN LOCATIONS e-mail: sales.europe@artesyn.com IRELAND +353 24 93130 AUSTRIA +43 1 80150 FAR EAST LOCATIONS e-mail: sales.asia@artesyn.com HONG KONG +852 2699 2868 Longform Datasheet Artesyn Technologies 2005 The information and specifications contained in this datasheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein. 20 www.artesyn.com