Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715

FIAM, Filter Input Attenuator Module

Rev. 1.1

Page 2 of 4

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PRELIMINARY

2nd Generation

48Vdc Input

DC-DC Converters

FIAM

–IN

PR

PC

+IN

–OUT

–S

SC

+S

+OUT

–IN

EMI

GND

NC

+IN

+OUT

NC

NC

ON

OFF

–OUT

–IN

+IN

Note: The FIAM is shown in the on state. To disable,

open the connection between ON/OFF and –Out.

TRANSORB P/N

20461-120

Conducted Noise

Inrush Limiting

Transient Immunity

Transient and Surge Protection

Figure 1—FIAM and Model V48A12C500A DC-DC converter.

Figure 2—FIAM and Model V48B24C250A DC-DC converter.

Figure 3—Inrush Limiting: Inrush current with 330µF

external capacitance.

Ch1=Vdc in

Ch2=Vdc out

Ch3=Idc in

@0.2A/mV

2

©

[ T

]

Ch1 Zoom:

1.0X Vert 0.005X Horz

Ch1

10.0 V

Ch2

10.0 V

M2.00ms

Ch1

31.8 V

Ch4

10.0mV

Ω

INPUT VOLTAGE

OUTPUT VOLTAGE

INPUT CURRENT

4

©

Figure 4—Transient Immunity: FIAM output response to an

input transient.

Tek Run: 10.0MS/s

@ 200.0V

Ch1=Input

Ch2=Output

48V offset

2

©

Ch1

25.0V

Ch2

25.0V

M5.00

µs Ch4

8.2A

INPUT TRANSIENT

©

OUTPUT VOLTAGE