APPLICATION NOTES QAW SERIES M odel N o. QAW24D5-40 SPECIFICATION Related condition MIN INPUT Turn on at NOM MAX Unit Measured 8.85 8.62 Volt DC 39 38 0.2 24 5.8 30 <1 1 1080 Volt DC Volt DC Volt DC Volt DC A mA mA 2 A Sec mA Input Over voltage Shutdown Turn on at Voltage Hysteresis Operating Voltage Range Maximum Input Current No Load Input Current Input Current under “LOGIC OFF” Inrush Current Transient Rating Rated Input Voltage Low Line 100% load 9 20 MHz w/low source impedance 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 ±4.9 ±5 ±5.1 ±1 ±1 0.02 with balanced loads 15 25 Rated Output Current Self Resetting 36 ±0.4 ±5.2 ±6 Volt DC % % % / oC 100 100 ±4 ±6.8 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 60 60 220 220 0 mV mV sec msec % 80 81 79 75 % % % % X X o 4.81 R c-a C/Watt C/Watt o C/Watt o C/Watt o C/Watt o Available, Contact Factory 360 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 KHz TTL Volt DC o C 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) 14 Low Line 12 10 8 Nominal Line 6 4 High Line 2 0 0 1 2 3 4 5 6 7 8 OUTPUT CURRENT (AMPS) EFFICIENCY VS OUTPUT CURRENT Low Line EFFICIENCY (%) 80 70 Nominal Line 60 50 High Line 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 10mV/div, 1uS/div, full load, 9Vin 0.1uF decoupling cap at room temp measured at positive output (+Vout) TYPICAL OUTPUT RIPPLE 10mV/div, 1uS/div, full load 36Vin 0.1uF decoupling cap at room temp measured at positive output (+Vout) TYPICAL INPUT RIPPLE CURRENT 200mA/div, 1uS/div, full load 24Vin at room temp with a low source impedance TYPICAL TRANSIENT RESPONSE 50mV/div, 200uS/div, 50% full load to 75% full load 24Vin room temp measured across both outputs (+Vout to –Vout) TYPICAL RISE TIME & TURN-ON DELAY USING LOGIC ENABLE 2V/div, 40mS/div (Vout), 2V/div 40mS/div (logic enable) 9Vin, full load at room temp TYPICAL RISE TIME & TURN-ON DELAY WITH Vin 0-24V 2V/div, 40mS/div (Vout), 10V/div, 40mS/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