APC18T12 ASTEC | Alldatasheet

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MODEL: APC18T12 SERIES SHEET 1 OF 10 NOVEMBER 4, 2004 - REVISION 00 APC18T12 Series: 12Vin / 18A Non-Isolated Point-of-Load The APC18 DC -DC Power Module is a high efficiency non -isolated buck converter designed for use in a wide variety of applications. Packaged in an industry standard recognized SMT footprint: 1.3” x 0 .53”, it works from a wide input voltage range of 10V to 14V and offers a wide adjustable output range of 0.75V to 5.5V through external resistor programming. Special Features

  • Industry Standard SMT Footprint
  • High Efficiency up to 95% at 5V output
  • Adjustable output through external resistor programming
  • Low output ripple and noise
  • Input UVLO
  • Fixed Switching Frequency
  • Positive Enable
  • Remote Sense pin Environmental Specifications
  • -40ºC to 85ºC Operating Temperature
  • -40ºC to 125ºC Storage Temperature
  • MTBF > 1 million hours Electrical Parameters Input Input Range 10-14VDC Input Surge 15V / 100ms Control Enable TTL compatible (Positive or Negative Logic Enable Options) Output Load Current Up to 18A max (Po £ 75W) Line/Load Regulation < 1% VO Ripple and Noise 50mVP-P Typ Output Voltage Adjust Range 0.75 – 5.5VO Transient Response 250mV Typ deviation 50% step 100ms settling time (Typ) Remote Sense +10%VO Over Current 120% max Protection Over Voltage 130% max Protection Over Temperature 110 °C Protection Safety UL + cUL 60950, Recognized EN60950 through TUV-PS

MODEL: APC18T12 SERIES SHEET 2 OF 10 NOVEMBER 4, 2004 - REVISION 00 Electrical Specifications ABSOLUTE MAXIMUM RATINGS Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional operation of the device is converter is not implied at these or any other conditions in excess of those given in the operational section of the specs. Exposure to absolute maximum ratings for extended period can adversely affect device reliability. Parameter Device Symbol Min Typ Max Unit Input Voltage Continuous Transient (100ms) All VIN VIN, trans Vdc Isolation Voltage Input to Output All NA Operating Temperature All Ta -40 - 85 ºC Storage Temperature All TSTG -40 - 125 ºC Operating Humidity All - 10 - 85 % Max Voltage at Enable Pin All - - 15 Vdc Max Output Power - - 80 W INPUT SPECIFICATION Parameter Device Symbol Min Typ Max Unit Operating Input Voltage Range All VIN 10.0 12.0 14.0 Vdc Input Under-Voltage Lock-out T_ON Threshold T_OFF Threshold All 9.0 8.0 10.8 9.9 Vdc Input Current1 (VIN = VIN, Min; IO = IO, Max) All IIN-MAX - 9.5 A Max Pdiss @ IO = 0A (VIN = VIN, Nom) 5.50Vo 0.75Vo 0.5 W Input Ripple Current2 5Hz to 20MHz All II1 - 300 mAp-p

MODEL: APC18T12 SERIES SHEET 3 OF 10 NOVEMBER 4, 2004 - REVISION 00 Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Output Voltage Set point VIN = VIN, MIN to VIN,MAX; IO =IO,Max VO,SET 0.735 0.75 0.765 Vdc Output Regulation Line: VIN = VIN, min to VIN, max Load: IO = IO, min to IO, max Temp: TA = -40 ºC to +85ºC All All All 0.5 0.5 mV Ripple and Noise4 Peak-to-Peak: (5Hz to 20MHz) All - - 50 75 mVp-p Output Current5 All IO 0 - 18 A External Load Capacitance Cap ESR = 1 mO Cap ESR = 10 mO All 1000 5000 µF µF Output Current-limit Inception6 All IO 150% Over Temperature Range6 (AVG. PCB TEMP, measured at R11 location) All 95 - 120 °C 0.75V η 76.0 78.0 - % 1.20V η 83.0 84.5 - % 1.50V η 85.5 87.0 - % 1.80V η 87.0 88.5 - % 2.50V η 89.5 91.0 - % 3.30V η 91.5 92.5 - % Efficiency VIN = VIN-NOM IO = IO,MAX ; TA=25°C 5.00V η 93.5 94.5 - % Output voltage rise time VIN = VIN-MIN to VIN-MAX All ms Enable to Output Turn-ON Delay VIN = VIN-MIN to VIN-MAX IO = IO,MIN to IO,MAX All ms Switching Frequency All - 300 kHz Output Turn-on Overshoot Output Turn-off undershoot (Passive Resistive Full Load) All - - - 5 -0.5 %Vo V Output Enable ON/OFF Positive Enable* Enable Pin Voltage: Mod-ON Mod-OFF All 2.6 0.8 V V

MODEL: APC18T12 SERIES SHEET 4 OF 10 NOVEMBER 4, 2004 - REVISION 00 Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Dynamic Response8 (CO = 10uF Tantalum + 1uF Ceramic) Load Change of 50% step anywhere between 10% to 100% of rated load Peak Deviation Settling Time to VO, Nom <5% Peak deviation Δ IO/Δ t All 2.5 250 100 300 150 A/µs mV µs Dynamic Response8 (CO = 150uF x2 Special Polymer Aluminum Capacitors) Load Change of 50% step anywhere between 10% to 100% of rated load Peak Deviation Settling Time to VO, Nom <5% Peak deviation Δ IO/Δ t All 2.5 150 150 200 200 A/µs mV µs Output Voltage Trim Range9 All 0.75 5.50 V Remote Sense10 All - 10% V NOTE: 1. The converter is not internally fused. Recommended external fuse, Cooper Bussman 6125FA12A or equivalent 2. External input capacitance required. See Figure 1. 4. Refer to Appendix A3 for the output ripple and Noise Test Measurement Setup. 5. Output current limited by 80W/Vo. Output Power Derating applies at elevated temperature. See Appendix B for the Thermal Derating Curves. 6. OCP and OTP are in hiccup mode. The converter will auto restart without the need to recycle the input voltage or toggle the enable signal and once the fault is removed. Vo higher than 1.5V, true OCP exists. Vo less than 1.5V, OTP is used for OCP. Over current of not higher 150% for Vo less than 1.5V is recommended. Typical overload condition is 150% or 27A. The module with Vo < 1.5V may not be survival from over current exceeding 30A. 8. Load step response shall be measured at the load side of the output capacitors. See Appendix A4 for the output and input cap requirement. 9. See appropriate Trim Equation and configuration in Appendix A6. 10. The combination of remote sense and output trim adjust cannot exceed 5.5V.

Figure 3. Typical Application Circuit the Enable pin and ground is between 2.6V to 15V (or the Enable Pin is left open). Output voltage adjustment is accomplished by connecting an external resistor between the Trim Pin and Ground Pin terminals. Where Rtrim is the resistance value in ohms and VO in Volts is the output voltage desired.

MODEL: APC18T12 SERIES SHEET 10 OF 10 NOVEMBER 4, 2004 - REVISION 00 TABLE 2: PART NUMBERING SCHEME O/P CURRENT O/P VOLTAGE I/P Voltage OPTIONS APC xx y 12 - 9 z 18 = 18A T = 0.75V 12 = 10V – 14V J = Tray packaging Non “J” = T&R packaging Please call 1-888-41-ASTEC for further inquiries or visit us at www.astecpower.com