APA18T04-9

Technical Reference Note APA18T04 DC - DC Series APA18T04 – 3.0-5.5Vin, 18A, Non-isolated DC – DC SIP Converter The single output APA18T04 is a non-isolated, 60W, SIP footprint Point-of-Load (POL) DC/DC converter. The new APA18T04 series can deliver an adjustable output voltage range from 0.75V – 3.3V at 18 Amps (A) with efficiency as high as 93.5%, and the input voltage range is from 3.0 – 5.5V. Electrical Parameters Input Input range Input Surge Efficiency Output Load current Line Regulation Load Regulation 0.75Vo 0.75 < Vo < 3.3V 3.3V ≤ Vo Noise / Ripple Enable Transient Response (with ouput cap 100uF Tantalum + 1uF ceramic) 3.0 to 5.5 VDC 6V / 100ms 95%@3.3Vo (Typical) 18Amax (Po ≤ 60W) < 0.5% 10mV 15mV 30mV 50mV p-p max TTL compatible 300mV typical deviation For load change of 50% step Between 10% to 100% of load 100uS(max) recovery +10% Vo 2.7 –3.0V (Typ) 120°C Hiccup – auto recovery 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 Environment Specifications -40°C to +85°C Operating temperature -40°C to +125°C Storage temperature MTBF: >1 million hours ROHS Compliant Remote Sense Turn on input voltage Over Temperature Protection OCP/OTP Safety UL, cUL TUV 60950 Recognized EN60950 Licensed Model: APA18T04 Series Date: Aug 2005 SH 1 OF 26 Technical Reference Note APA18T04 DC - DC Series APA18T04 SERIES THIS TECHNICAL REFEENCE NOTES COVERS THE SPECIFICATIONS FOR A SINGLE OUTPUT, OPEN-FRAME, NON-ISOLATED DC-DC CONVERTER WITH ADJUSTABLE OUTPUT FROM 0.75V TO 3.3V HAVING 59.4W MAXIMUM OUTPUT POWER WHEN OPERATED FROM A NOMINAL 5 VDC SOURCE. THE MECHANICAL OUTLINE IS 50.8MM X 12.7MM X 8.1MM AND OFFERED IN SIP TERMINATION. MODELS IN THE FAMILY ARE OUTLINED BELOW. MODEL NUMBER APA18T04-9 APA18T04-9H *Options: Suffix Option -9 Vo Trim, Vertical Mounting Pin, RoHS compliance -9H Vo Trim, Horizontal Mounting Pin, RoHS compliance Note: * 18A maximum output current with total power limited to 59.4W.Output voltage is set to 0.7525V (fty default). SIS CODE APA18T04-9 APA18T04-9H Vin range 3V – 5.5V 3V – 5.5V Vout/Iout 0.75V – 3.3V / 18A* 0.75V – 3.3V / 18A* MODEL ID NO D892 D893 Model: APA18T04 Series Date: Aug 2005 SH 2 OF 26 Technical Reference Note APA18T04 DC - DC Series 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) LITTLEFUSE 314025(25A fast acting fuse) As specified by Appendix A2, and 4 As specified by Appendix A3, and 4. 3.3Vdc/5Vdc (nominal Input Voltage) 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: APA18T04 Series Date: Aug 2005 SH 3 OF 26 Technical Reference Note APA18T04 DC - DC Series 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 6 8 85 125 85 12 59.4 Unit Vdc ºC ºC % Vdc W 4.3 INPUT SPECIFICATIONS Device All 0.75V=Vo