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AHF2805S Datasheet(PDF) 9 Page - International Rectifier |
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AHF2805S Datasheet(HTML) 9 Page - International Rectifier |
9 / 17 page www.irf.com 9 AHF28XX Series Table IV. Electrical Performance Characteristics - continued AHF2805D Notes to Specifications 1. Parameter guaranteed by line load and cross regulation tests. 2. Up to 90 percent of full power is available from either output provided the total output does not exceed 12W. 3. Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz. 4. Load current split equally between +V OUT and –VOUT. 5. 1.2 watt load on output under test, 1.2 watt to 10.8 watt load change on other output. 6. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 7. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table IV. 8. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 9. Load step transition time between 2 and 10 microseconds. 10. Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±1 percent of V OUT at 50 percent load. 11. Input step transition time between 2 and 10 microseconds. 12. Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 1) while power is applied to the input. Limits Test Symbol Conditions -55°C ≤ Tc ≤+125°C Vin = 28 Vdc ±5%, C L = 0 unless otherwise specified Group A Subgroups Device Types Min Max Unit Overload, T C = +25°C 8 6 Power dissipa- tion load fault P D Short circuit, T C = +25°C 1,2,3 01 2 W Switching frequency 4 F S I OUT = 2400mA 4,5,6 01 500 600 kHz 1200 mA to/from 2400mA 4,5,6 -400 +400 Output response to step transient load changes 4,9 VO TLOAD 0 mA to/from 1200 mA 4,5,6 01 -800 +800 mV pk 1200 mA to/from 2400mA 4,5,6 01 70 Recovery time step transient load changes 4,9,10 TT LOAD 0 mA to/from 1200 mA 4,5,6 100 µs Output response transient step line changes 4,7,11 VO TLINE Input step from/to 16 to 40 V dc, I OUT =2400mA 4,5,6 01 -400 +400 mV pk Recovery time transient step line changes 4,7,10,11 TT LINE Input step from/to 16 to 40 V dc, I OUT =2400mA 4,5,6 01 1200 µs Turn on overshoot 4 VTon OS I OUT =0 and 2400mA 4,5,6 01 600 mV pk Turn on delay 4,12 Ton D I OUT = 0 and 2400mA 4,5,6 01 25 ms Load fault recovery 7 Tr LF 4,5,6 01 25 ms Weight 38 grams |
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