APPLICATION NOTES Rev. B Technical Specifications Model No. QAW48T12-40 QAW48T12-40 All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION INPUT Turn On At Turn Off At Input Over Voltage Shutdown Turn On At Turn Off 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 / ΔV Load Step / ΔV 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 Trimmability Over Temperature Shutdown MTBF Related condition Rated Input Voltage Low Line 100% Load 18 20MHz w/low source impedance 4.95/±10.81 Nom Max Vdc Vdc 77.5 76.5 48 2.74 28 4 1 725 Vdc Vdc Vdc A mA mA 2 A Sec mA 5 / ±12 25 50 Rated Output Current Self Resetting 0.4 / ±0.083 5.2 / ±1.083 120 Hz X X 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 Rθc-a Unit 16.5 15.5 75 5.05/±13.20 1 / ±5 1 / ±1 0.2 / 1 6 / ±1.25 Vdc % % % / °C 100 100 4 / ±0.833 6.8 / ±1.417 mV mV A A A/sec 60 dB 55 50 90 475 0 mV mV µs µs % 82 82 80 76 % % % % 5.09 °C / Watt Available, Contact Factory °C / Watt Fixed Active HIGH, Open Collector 350 4.75 / ±11.4 5.25 / ±12.6 105 Case Temperature Bellcore TR-332 02/24/2010 Min 3.51E6 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 KHz TTL Vdc °C Hours Page 1 of 5 APPLICATION NOTES Rev. B QAW48T12-40 OUTPUT POWER (WATTS) DERATING CURVE 50 40 30 20 10 0 0 20 40 60 80 100 AMBIENT TEMPERATURE (°C) POWER DISSIPATION (WATTS) POWER DI SSIPATION VS OUTPUT POWER 6 Low Line 5 4 Nominal Line 3 2 1 High Line 0 0 10 20 30 40 50 60 70 80 90 100 OUTPUT POWER (%) EFFICIENCY VS OUTPUT POWER EFFICIENCY (%) 90 Low Line 80 70 Nominal Line 60 50 40 High Line 30 0 10 20 30 40 50 60 70 80 90 100 OUTPUT POWER (%) 02/24/2010 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 2 of 5 APPLICATION NOTES Rev. B 02/24/2010 QAW48T12-40 TYPICAL OUTPUT RIPPLE 20mV/div, 1µS/div, full load, 18Vin 0.1µF decoupling cap at room temp (measured at main output) TYPICAL OUTPUT RIPPLE 20mV/div, 1µS/div, full load 75Vin 0.1µF decoupling cap at room temp (measured at main output) TYPICAL INPUT RIPPLE CURRENT 200mA/div, 1µS/div, full load 48Vin at room temp with a low source impedance TYPICAL TRANSIENT RESPONSE 20mV/div, 200µS/div, 50% full load to 75% full load 48Vin room temp (measured at main output w/aux. outputs at full load) TYPICAL RISE TIME & TURN-ON DELAY USING LOGIC ENABLE 1V/div, 100mS/div (Vout), 2V/div 100mS/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 Page 3 of 5 APPLICATION NOTES Rev. B QAW48T12-40 MECHANICAL DRAWING Unit: inches [mm] Case and pin-to-case measurements for reference only unless otherwise noted. PIN CONNECTION PIN # 1 2 3 4 5 6 7 8 9 10 SINGLE No Pin -Input +Input Case On/Off Control No Pin No Pin Common +Vout Trim DUAL No Pin -Input +Input Case On/Off Control -Vout No Pin Common +Vout Trim TRIPLE No Pin -Input +Input Case On/Off Control -12V / -15Vout +12V / +15Vout Common +Vout Trim For “A” option/suffix, Pin 2 is +Input (+Vin), Pin 3 is –Input (-Vin) 02/24/2010 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 4 of 5 APPLICATION NOTES Rev. B QAW48T12-40 COMPANY INFORMATION Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development engineers will provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2008 certification is just one example of our commitment to producing a high quality, well-documented product for our customers. Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss your future projects. Contact Wall Industries for further information: Phone: Toll Free: Fax: E-mail: Web: Address: 02/24/2010 (603)778-2300 (888)587-9255 (603)778-9797 [email protected] www.wallindustries.com 5 Watson Brook Rd. Exeter, NH 03833 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 5 of 5