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ADDC02808PB Datenblatt(PDF) 2 Page - Analog Devices |
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ADDC02808PB Datenblatt(HTML) 2 Page - Analog Devices |
2 / 20 page ADDC02808PB–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Case Test ADDC02808PB Parameter Temp Level Conditions Min Typ Max Units INPUT CHARACTERISTICS Steady State Operating Input Voltage Range1 Full VI IO = 1.25 A to 25 A Pulsed 18 28 40 V Abnormal Operating Input Voltage Range (Per MIL-STD-704D)1 Full VI IO = 1.25 A to 25 A Pulsed 16 50 V Input Overvoltage Shutdown +25 °C I 50 52.5 55 V No Load Input Current +25 °CVI 45 90 mA Disabled Input Current +25 °CVI 1 2 mA OUTPUT CHARACTERISTICS2, 3 Output Voltage (VO) +25 °CI IO = 1.25 A to 25 A, VIN = 18 V to 40 V dc 7.92 8.00 8.08 V Full VI IO = 1.25 A to 25 A, VIN = 18 V to 40 V dc 7.84 8.16 V Full VI IO = 1.25 A to 20 A, VIN = 16 V to 50 V dc 7.84 8.16 V Line Regulation +25 °CVI IO = 25 A Pulsed, VIN = 18 V to 40 V dc 1 5 mV Load Regulation +25 °CVI VIN = 28 V dc, IO = 1.25 A to 25 A Pulsed 2.5 10 mV Output Ripple/Noise4 +25 °CI IO = 25 A, 5 kHz – 2 MHz BW 10 30 mV p-p Output Current (IO) 5 Full VI VIN = 18 V to 40 V dc, Pulsed 1.25 25 A Output Overvoltage Protection +25 °CV IO = 25 A, Open Remote Sense Connection 125 % VO nom Output Current Limit +25 °CV VO = 90% VOUT Nom 130 % IO max Output Short Circuit Current +25 °CI 40 A ISOLATION CHARACTERISTICS Isolation Resistance +25 °C I Input to Output or Any Pin to Case at 500 V dc 100 M Ω DYNAMIC CHARACTERISTICS4 Step Changes In Load (min to max) +25 °C I (Reference Section Entitled “Transient Response”) Step Changes In Load (max to min) (Reference Section Entitled “Response at End of Pulse”) Soft Start Turn-On Time +25 °CI IO = 25 A, From Inhibit High to Status High 6 10 ms THERMAL CHARACTERISTICS Efficiency +25 °CI IO = 12.5 A 77.5 Min VI IO = 12.5 A 77.5 80 % Max VI IO = 12.5 A 76 % +25 °CI IO = 25 A 73.5 76 % Min VI IO = 25 A 73.5 % Max VI IO = 25 A 71 % Hottest Junction Temperature5 +90 °CV IO = 25 A 110 °C CONTROL CHARACTERISTICS Clock Frequency Full VI IO = 2 A 0.85 0.99 MHz ADJUST (Pin 3) V ADJ +25 °C I 3.1 3.2 3.3 V STATUS (Pin 4) VOH +25 °CI IOH = 400 µA2.4 4.0 V VOL +25 °CI IOL = 1 mA 0.15 0.7 V VAUX (Pin 5) VO (nom) +25 °CI IAUX = 5 mA, Load Current = 12.5 A 14.65 15.15 15.65 V INHIBIT (Pin 6) VIL +25 °CI 0.5 V IIL +25 °CI VIL = 0.5 V 1.2 mA VI (Open Circuit) +25 °CI 15 V SYNC (Pin 7)6 VIH +25 °CI 4.0 V IIH +25 °CI VIH = 7.0 V 175 µA ISHARE (Pin 8) +25 °CI IO = 20 A 2.45 2.55 2.65 V TEMP (Pin 9) +25 °C V 3.90 V NOTES 150 V dc upper limit rated for transient condition of up to 50 ms. 16 V dc lower limit rated for continuous operation during emergency condition. Steady state and abnormal input voltage range require source impedance sufficient to insure input stability at low line. See sections entitled System Instability Considerations and Input Voltage Range. 2Measured at the remote sense points. 3Unit regulates output voltage to zero load; tests performed at low continuous load and 200 W pulsed load. 4C LOAD = 1,000 µF. Output ripple/noise measured at converter output; may be smaller at external load capacitance. Unit is stable for C LOAD ranging from 500 µF to 4,000 µF. 5Refer to section entitled “Pulse Output Power vs. Pulse Length” for more information. 6Unit has internal pull-down; refer to section entitled Pin 7 (SYNC). Specifications subject to change without notice. REV. A –2– (TC = +25 C, VIN = 28 V dc 0.5 V dc, unless otherwise noted; full temperature range is –55 C to +90 C; all temperatures are case and TC is the temperature measured at the center of the package bottom.) |
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