APPLICATION NOTES Rev C QAW SERIES Technical Specifications Model No. QAW24S12-40 M odel N o. QAW24S12-40 SPECIFICATION Related condition MIN INPUT Turn on at 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 11.88 MAX Rated Output Current Self Resetting 0.333 4.333 Unit Measured 8.85 8.62 Volt DC Volt DC 38.5 38 0.2 24 5.6 44 2 1 1140 Volt DC Volt DC Volt DC Volt DC A mA mA A2 Sec mA 12 36 12.12 ±1 ± 0.5 0.2 50 100 5 at 9Vdc in at 10Vdc in Max Startup Capacitance 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 NOM Volt DC % % % / oC 100 100 3.333 5.667 mV mV A A A/sec µF µF 320 440 120 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 85 80 240 210 0 mV mV µsec msec % 81 81 81 78 % % % % X X o 5.47 R c-a C/Watt C/Watt o C/Watt o C/Watt o C/Watt o Available, Contact Factory Fixed Active HIGH, Open Collector 350 11.4 12.6 105 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 Rev 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) 11 10 9 8 7 6 5 4 3 2 1 0 Low Line Nominal Line High Line 0 1 2 3 OUTPUT CURRENT (AMPS) EFFICIENCY VS OUTPUT CURRENT Low Line EFFICIENCY (%) 85 75 Nominal Line 65 55 High Line 45 0 1 2 3 OUTPUT CURRENT (AMPS) Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 2 Rev APPLICATION NOTES QAW SERIES TYPICAL OUTPUT RIPPLE 20mV/div, 1uS/div, full load, 9Vin 0.1uF decoupling cap at room temp TYPICAL OUTPUT RIPPLE 50mV/div, 1uS/div, full load 36Vin 0.1uF decoupling cap at room temp 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 TYPICAL RISE TIME & TURN-ON DELAY USING LOGIC ENABLE 5V/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 5V/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