ABC400 datasheet(4/12 Pages) BEL

4 / 12 page

ABC400 Series

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Figure 2: Inrush current, Vin = 115Vac, 90° CH2: Vin (250V/div), CH3: Iin (10A/div)

Figure 3: Inrush current, Vin = 230Vac, 90° CH2: Vin (250V/div), CH3: Iin (10A/div)

5.3 INPUT UNDER-VOLTAGE

If the sinusoidal input voltage stays below the input under voltage lockout threshold

Vi on, the supply will be inhibited. Once the input

voltage returns within the normal operating range, the supply will return to normal operation again.

5.4 POWER FACTOR CORRECTION

Power factor correction (PFC) is achieved by controlling the input current waveform synchronously with the input voltage. A sp ecified

PFC controller is implemented in the interleaved transition mode topology giving outstanding PFC results over a wide input voltage and

load ranges. The input current will follow the shape of the input voltage.

5.5 EFFICIENCY

The high efficiency (see

Figure 4, 5 and 6) is achieved by using state-of-the-art silicon power devices in conjunction with interleaved

transition mode PFC topology minimizing switching losses. Synchronous rectifiers on the output reduce the losses in the high current

output path for ABC400-1012G schottky diode and ultra-fast diode are used as rectifiers for

ABC400-1024G and ABC400-1048G due to the high output voltage level.

ABC400 bảng dữ liệu(PDF) 4 Page - Bel Fuse Inc.