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AD260BND-2 Folha de dados(PDF) 7 Page - Analog Devices |
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AD260BND-2 Folha de dados(HTML) 7 Page - Analog Devices |
7 / 8 page AD260 –7– REV. 0 The power transformer is designed to operate between 150 kHz and 250 kHz and will easily deliver more than 1 W of isolated power when driven push-pull (5 V) on the system side. Different transformer tap, rectifier and regulator schemes will provide combinations of ±5 V, 15 V, 24 V or even 30 V or higher. The output voltage when driven with a low voltage-drop drive (@ 5 V push-pull) will be 37 V p-p across the entire secondary. This will drop to 33 V p-p at 4.5 V drive. 3.3 F TANT. + – 52T CT LM2524 12 11 14 13 COMP VIN VREF 4.7k 915 16 3.3k 0.1 F 10 1 2 4 5 6 7 470pF GND INV NI CL+ CT RT CL– LOGIC/SHUTDOWN (HI) +5Vdc 8 3.3 F TANT. + – 52T CT MAX 253 1 8 4 3 G2 FS SHUTDOWN ( ON/OFF) +5Vdc 7 G1 2 6 D1 D2 SD Figure 3. System Side Transformer Driver Examples Application Examples The following is an example of a typical transformer system-side drive circuit and a field-side regulation circuit suitable for use in most general applications. +5V REG 96T CT. –5V ISO +5V ISO I VDD FLD ENABLE FLD (PWR-UP ENABLE) –5V REG Figure 4. a a +5Vdc/+4.5Vdc 150mA + LOAD COM 80mA b – COM 20mA b + 20mA b +5Vdc/+4.5Vdc 150mA – COM 20mA b + 20mA a +5Vdc/+4.5Vdc 150mA – COM 40mA a + 40mA a a 7.72 7.62 15.79 23.5 7.72 a +5Vdc/+4.5Vdc 150mA COM 20mA b + 20mA b + VOUT @ 5V DRIVE V(MIN) @ 4.5V DRIVE +8.55 17.63 8.64 +26.3 +8.64 "a" DIODES IN5818/MBR0530 "b" DIODES IN5819/MBR0540 Figure 5. Field Side Power Supply Rectifier Examples |
Nº de peça semelhante - AD260BND-2 |
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Descrição semelhante - AD260BND-2 |
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