APA18T12-9H

Technical Reference Note APA18T12 DC - DC Series Preliminary APA18T12 - 12Vin, 75Watts, Non-isolated DC – DC POL SIP Converter The single output APA18T12 is a non-isolated, 75W, SIP footprint Point-of-Load (POL) DC/DC converter. The new APA18T12 series can deliver an adjustable output voltage range from 0.75V – 5.5V at 18 Amps (A) with efficiency as high as 93.5%, and the input voltage range is from 10 – 14V. Electrical Parameters Input Input range Input Surge Efficiency Output Line Regulation Load Regulation 0.75Vo 0.75 < Vo < 3.3V 3.3V ≤ Vo Regulation Over operating Temperature range Noise / Ripple 0.75 – 5Vo > 5Vo Enable Transient Response 10 to 14 VDC 15V 92%@3.3Vo (Typical) < 0.5% 7mV 15mV 25mV < 1.0% Special Features • • • • • • • • Point of Load (POL) applications High current slew rate at 1A/uS Industry standard footprint Open frame SIP -40°C to +85°C Ambient operating temperature Positive enable function Low output ripple and noise Adjustable output voltage through external resistor programming • Regulation to zero load 60mV 75mV TTL compatible 200mV typical deviation For load change of 50% step Between 10% to 100% of load 200uS(max) recovery 0.25V 8.7 – 9.7V (Typ) Hiccup – auto recovery Safety UL, cUL TUV 60950 Recognized EN60950 Licensed Remote Sense Turn on input voltage OCP/OTP Model: APA18T12 Series Date: June 2004 SH 1 OF 17 Technical Reference Note APA18T12 DC - DC Series Preliminary APA18T12 SERIES THIS TECHNICAL REFERENCE NOTES COVERS THE SPECIFICATIONS FOR A SINGLE OUTPUT, OPENFRAME, NON-ISOLATED DC-DC CONVERTER WITH ADJUSTABLE OUTPUT FROM 0.75V TO 5.5V HAVING 75W MAXIMUM OUTPUT POWER WHEN OPERATED FROM A NOMINAL 12 VDC SOURCE. MODEL NUMBER APA18T12-9 APA18T12-9H SIS CODE APA18T12-9 APA18T12-9H Vin range 10V – 14V 10V – 14V Vout/Iout 0.75 – 5.50V/ 18A* 0.75 – 5.50V/ 18A* MODEL ID NO C595 C596 *Options: Suffix Option -9 Vo Trim, Vertical Mounting Pin -9H Vo Trim, Horizontal Mounting Pin Note: * - 18A maximum output current with total power limited to 75W. Factory default output voltage set to 0.75V. Model: APA18T12 Series Date: June 2004 SH 2 OF 17 Technical Reference Note APA18T12 DC - DC Series Preliminary Electrical Specifications The product shall comply with the requirements of this specification for all valid conditions of line input voltage, load current, temperature and other environmental conditions, unless otherwise specified in this document. Description External Input Fuse1,2 External Input Capacitance External Output Capacitance +VIN Enable GND Trim +Vout Airflow3 TA (Ambient Temperature) Fast-acting 20A maximum 22uF/16V*3 Ceramic Cap. 10uF Tantalum Cap. +1uF Ceramic Cap. +10Vdc to 14Vdc Open Return for both VIN and VO Resistor Programming [See App A6] Output Pin connected to Load 200LFM/300LFM -40ºC to 85ºC NOTE: 1. Refer to Appendix A4 for typical application circuit. 2. The converter is not internally fused; Engineering needs to specify a fuse appropriate to the package size of the converter. 3. Refer to Appendix A1 for correct airflow and module orientation &Appendix B for the derating curves of different airflow. Model: APA18T12 Series Date: June 2004 SH 3 OF 17 Technical Reference Note APA18T12 DC - DC Series Preliminary ABSOLUTE MAXIMUM RATINGS Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this specification. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. The converter shall be designed, labeled and safety approved for maximum continuous rating as follows: Parameter Input Voltage Continuous Transient (100ms) Operating Temperature Storage Temperature Operating Humidity Max Voltage at Enable Pin Max Output Power Device All All All All All All Symbol VIN VIN, trans Ta TSTG Min -0.3 -40 -55 10 Typ Max 15 18 85 125 85 14 75 Unit Vdc ºC ºC % Vdc W INPUT SPECIFICATIONS Parameter Operating Input Voltage Range Input Under-Voltage Lock-out T_ON Threshold T_OFF Threshold Input Current (VIN = VIN, Min ; IO = IO, Max) Max Pdiss @ IO = 0A (VIN = VIN, Nom) Input Ripple Current1 5Hz to 20MHz Input Voltage Rise Time 10% to 90% of Vout Inrush Current dVIN/dt Device All All 5.50V 0.75V 5.50V 0.75V All All All IIN-MAX Symbol VIN Min 10.0 8.7 7.9 NA NA Typ 12.0 Max 14.0 9.7 8.7 10.0 2.0 5.5 5.0 300 Unit Vdc Vdc A W mAp-p V/ms Apk II1 NOTE: 1. External input capacitance required. See Input Ripple Current test measurement setup on Appendix A2. Model: APA18T12 Series Date: June 2004 SH 4 OF 17 Technical Reference Note APA18T12 DC - DC Series Preliminary OUTPUT SPECIFICATIONS Parameter Output Voltage Set point VIN = VIN, MIN to VIN,MAX; IO =IO,Max Output Regulation Line: VIN = VIN, min to VIN, max Load: IO = IO, min to IO, max Temp: TA = -40 ºC to +85ºC Ripple and Noise2 Peak-to-Peak: (5Hz to 20MHz) Output Current and output power3 External Load Capacitance Capacitor ESR Output Current-limit Inception VOUT = 90% VO,SET4,9,10 Over Temperature Range6 (AVG. PCB TEMP) Device Symb VO,SET Min 0.74 Typ 0.75 Max 0.76 Unit Vdc All 0.75V 0.75