APC18T04 ASTEC | Alldatasheet

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MODEL: APC18T04 SERIES SHEET 1 OF 13 JULY 27, 2005 - REVISION A APC18T04 Series: 3.0-5.5Vin / 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 3V to 5.5V and offers a wide adjustable output range of 0.75V to 3.3V through external resistor programming. Special Features

  • Industry Standard SMT Footprint
  • High Efficiency up to 95% at 3.3V 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 3V to 5.5VDC Input Surge 6V / 100ms Control Enable TTL compatible (Positive or Negative Logic Enable Options) Output Load Current Up to 18A max (Po ≤≤≤≤ 60W) Line/Load Regulation < 0.5% V O Ripple and Noise 50mV P-P max Output Voltage Adjust Range 0.75 –3.3V O Transient Response 300mV deviation (typical) 50% load change 25µµµµs settling time (typical) Remote Sense +10%V O Over Current 150% I O Protection Over Temperature 120 °°°°C max Protection Safety UL + cUL 60950, Recognized EN60950 through TUV-PS

MODEL: APC18T04 SERIES SHEET 2 OF 13 JULY 27, 2005 - REVISION A 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 V IN VIN, trans Vdc Isolation Voltage Input to Output All NA - - Operating Temperature All Ta -40 - 85 ºC Storage Temperature All T STG -40 - 125 ºC Operating Humidity All - 10 - 85 % Max Voltage at Enable Pin All - - 15 Vdc Max Output Power - - 60 W INPUT SPECIFICATION Parameter Device Symbol Min Typ Max Unit Operating Input Voltage Range All V IN 3.0 3.3 / 5.0 5.5 Vdc Input Under-Voltage Lock-out T_ON Threshold T_OFF Threshold All 2.7 2.4 2.9 2.6 3.0 2.7 Vdc Input Current1 (VIN = VIN, Min; IO = IO, Max) All I IN-MAX -1 8 A Max Pdiss @ IO = 0A (VIN = VIN, Nom) 3.3Vo 0.75Vo 0.8 0.5 W Input Ripple Current2 5Hz to 20MHz All I I1 - 100 150 mAp-p Inrush Transient All I 2t0 . 1 A 2s

MODEL: APC18T04 SERIES SHEET 3 OF 13 JULY 27, 2005 - REVISION A 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 0.74 0.75 0.76 Vdc Output Regulation Line: VIN = VIN, min to VIN, max Load: I O = IO, min to IO, max Temp: TA = -40 ºC to +85ºC All All All 0.5 0.5 mV Ripple and Noise3 Peak-to-Peak: (5Hz to 20MHz) All - - 25 50 mVp-p Output Current4 All I O 0- 1 8 A External Load Capacitance Cap ESR ≥ 1 mΩ Cap ESR ≥ 10 mΩ All 1000 5000 µF µF Output Current-limit Inception5 All I O 150 250 %Io Over Temperature Range5 (AVG. PCB TEMP, measured at R11 location) All 100 110 120 °C 0.75V η 80 82 - % 1.20V η 85 87 - % 1.50V η 87 89 - % 1.80V η 88 90 - % 2.50V η 91 92.5 - % Efficiency VIN = 5VIN-NOM, IO = IO,MAX ; TA=25°C, 200LFM 3.30V η 93 95 - % Output voltage rise time VIN = VIN-MIN to VIN-MAX All - - 3 6 ms Enable to Output Turn-ON Delay VIN = VIN-MIN to VIN-MAX IO = IO,MIN to IO,MAX All - - - 14 ms Switching Frequency All - 250 300 350 kHz Output Turn-on Overshoot Output Turn-off undershoot (Passive Resistive Full Load) All - - - 2 -0.5 %Vo V Output Enable ON/OFF Positive Enable Enable Pin Voltage: Mod-ON Mod-OFF All - 2.4 0.8 V V

MODEL: APC18T04 SERIES SHEET 4 OF 13 JULY 27, 2005 - REVISION A Electrical Specifications (continued) OUTPUT SPECIFICATIONS Parameter Device Symbol Min Typ Max Unit Dynamic Response (CO = 10uF Tantalum + 1uF Ceramic) Load Change of 50% step anywhere between 10% to 100% of rated load Peak Deviation Settling Time to V O, Nom <5% Peak deviation ∆IO/∆t All 2.5 300 350 A/µs mV µs Dynamic Response (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 V O, Nom <5% Peak deviation ∆IO/∆t All 2.5 150 150 200 200 A/µs mV µs Output Voltage Trim Range6 All 0.75 3.63 V Remote Sense All - 10% V NOTE: 1. The converter is not internally fused. 2. External input capacitance required. See Figure 1. 3. Refer to Appendix A3 for the output ripple and Noise Test Measurement Setup. 4. Output current limited by 60W/Vo. Output Power Derating applies at elevated temperature. See Thermal Derating Curves. 5. OCP and OTP are in hiccup mode. The converter will auto restart once the fault is removed. 6. The voltage difference between input and output must be greater than 0.7V.

Figure 3. Typical Application Circuit the Enable pin and ground is between 2.4V 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.

Figure 8. Efficiency vs. Load Current at ambient Figure 9. Power Dissipation vs. Load Current at ambient Figure 10. Output Power Derating Curve for 0.75VOUT Figure 11. Output Power Derating Curve for 0.75VOUT

0 LFM

200 LFM

300 LFM

400 LFM

0 L FM

200 L FM

300 L FM

400 L FM

Figure 12. Output Power Derating Curve for 1.5VOUT at Figure 13. Output Power Derating Curve for 1.8VOUT at Figure 14. Output Power Derating Curve for 2.5VOUT at Figure 15. Output Power Derating Curve for 3.3VOUT at

Figure 24. Mechanical Outline