APPLICATION NOTES QAW SERIES Model No. QAW48S5-40 Technical Specifications All specifications are based on 25C, Nominal Line and Full Load unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION Related condition MIN INPUT Turn on at Turn off at Input Over voltage Shutdown Turn off at Turn on at Operating Voltage Range Maximum Input Current No Load Input Current Input Current under “LOGIC OFF” Inrush Current Transient Rating Reflected Ripple Current OUTPUT Output Voltage Set point Output Voltage Regulation Over Load Over Line Over Temperature Output Voltage Ripple and Noise Basic Ripple Spikes P-P Output Current Ranges Output Current Limit Short Term Output Current Surge DYNAMIC CHARACTERISTICS Input Voltage Ripple Rejection Output Transient and Load Changes Load step / ' V Load step / ' V Recovery Time Turn on Delay Overshoot of Output Voltage EFFICIENCY @ 100% load @ 75% load @ 50% load @ 25% load TEMPERATURE CONSIDERATIONS Thermal Resistance Normal Convection 100 lfm 200 lfm 300 lfm 400 lfm Heatsink Considerations General Technical Data Switching Frequency Remote ON OFF Control Trimmablility Over Temperature Shutdown MTBF Rated Input Voltage Low Line 100% load 18 20 MHz w/low source impedance 4.95 NOM MAX 16 15.5 Volt DC Volt DC 77 75 48 2.8 20 8 1 900 Volt DC Volt DC Volt DC A mA mA 2 A Sec mA 5.0 75 5.05 ±1 ± 0.5 0.02 Rated Output Current Self Resetting 0.8 10.4 Unit Measured 40 65 12 Volt DC % % % / oC 100 100 8 13.6 mV mV A A A/sec 120 Hz 60 dB 50 to 75% 50 to 100% 75 to 50% 100 to 50 % To within 1% Rated Vo From Vin(nom) to 90% Vout (nom) Full Load Resistive 80 80 150 400 0 mV mV Psec msec % 80 81 81 77 % % % % X X RTc-a 5.96 o 330 KHz TTL Volt DC o C C/Watt C/Watt o C/Watt o C/Watt o C/Watt o Available, Contact Factory Fixed Active HIGH, Open Collector 4.75 5.25 105 Case Temperature Bellcore TR-332 3.51E6 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Hours 1 APPLICATION NOTES QAW SERIES OUTPUT POWER (WATTS) DERATING CURVE 50 40 30 20 10 0 0 20 40 60 80 100 AMBIENT TEMPERATURE (DEG. C.) POWER DISSIPATION VS OUTPUT CURRENT POWER DISSIPATION (WATTS) 12 11 10 9 8 7 6 5 4 3 2 1 0 Low Line Nominal Line High Line 0 1 2 3 4 5 6 7 8 OUTPUT CURRENT (AMPS) EFFICIENCY VS OUTPUT CURRENT 90 Low Line EFFICIENCY (%) 80 70 Nominal Line 60 High Line 50 40 0 1 2 3 4 5 6 7 8 OUTPUT CURRENT (AMPS) Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 2 APPLICATION NOTES QAW SERIES TYPICAL OUTPUT RIPPLE 20mV/div, 1uS/div, full load, 18Vin 0.1uF decoupling cap at room temp TYPICAL OUTPUT RIPPLE 20mV/div, 1uS/div, full load 75Vin 0.1uF decoupling cap at room temp TYPICAL INPUT RIPPLE CURRENT 200mA/div, 1uS/div, full load 48Vin at room temp with a low source impedance TYPICAL TRANSIENT RESPONSE 50mV/div, 200uS/div, 50% full load to 75% full load 48Vin room temp TYPICAL RISE TIME & TURN-ON DELAY USING LOGIC ENABLE 1V/div, 10mS/div (Vout), 2V/div 10mS/div (logic enable) 18Vin, full load at room temp TYPICAL RISE TIME & TURN-ON DELAY WITH Vin 0-48V 1V/div, 100mS/div (Vout), 10V/div, 100mS/div (Vin) at room temp Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 3