TFI 150 Series, 150 Watt

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All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.

Possible Application

+Vin

–Vin

+Vout

–Vout

DC/DC

Cout

Input

–

+

Load

EMI

Filter*

TFI

EMS

Filter*

+Vin

–Vin

+Vout

–Vout

DC/DC

Input

–

+

Load

TFI

Surge Voltage

Clamping Voltage

Schematic for typical application

385 V max.

168 V typ.

20 ms max.

Input Surge Voltage

Clamping Voltage

Input Surge Voltage vs. Clamping Voltage

The TFI (RIA 12 Filter) clamps over-voltage to a safe value in order to protect the power module from damaging.

*Optional, depending on DC/DC converter.

RIA 12

The commonly in railway applications used RIA 12 standard has been withdrawn but is still in demand.

A comparison between EN 50155 and RIA 12 standard values is shown in the table below.

EN 50155 Standard

RIA 12 Standard

Vnom [VDC]

Input Range

Brownout

Transient

Brownout

Transient

Transient

0.7 to 1.25 Vnom

100 ms

0.6 Vnom

1‘000 ms

1.4 Vnom

100 ms

0.6 Vnom

1‘000 ms

1.5 Vnom

20 ms

3.5 Vnom

48

33.6 - 60.0

28.8

67.2

28.8

72.0

168.0

72

50.4 - 90.0

43.2

100.8

43.2

108.0

252.0

110

77.0 - 137.5

66.0

154.0

66.0

165.0

385.0