Datasheet > 24IMX70-05-0ITZG

24IMX70-05-0ITZG

更新时间： 2023-02-26 16:08:11

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DC-DC Regulated Power Supply Module

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24IMX70-05-0ITZG 数据手册

IMX70, IMY70 Series Data Sheet

70 to 90 Watt DC-DC Converters

Inrush Current

Input Transients Protection

The inrush current has been kept as low as possible by

choosing a very small input capacitance. A series resistor may

be installed in the input line, in order to further reduce this

current.

When V_iexceeds 154 V, the converter is temporarily disabled.

Furthermore, a built-in suppressor diode provides effective

protection against higher input transients, which may be

generated for example by short-circuits across the input lines.

Table 4: Built-in transient voltage suppressor

JM028

Model

Breakdown

voltage

Peak power

at 1 ms

Peak pulse

current

V_{Br nom}[V]

P_p[kW]

I_pp[A]

24IMX70

40IMX70

110IMY70

1.5

0.6

19.4

2.5

176

µs

For very high energy transients as for example to achieve

IEC/EN 61000-4-5 compliance (as per table Electromagnetic

Immunity) an external inductor and capacitor are required. The

components should have similar characteristics as listed in

table below.

Fig. 3

Inrush current at V_{i nom}, P_{o nom}versus time (110IMY70-24-24-

8). Source impedance according to ETS 300132-2: L = 10

µH, R = 1.5 Ω.

Table 5: Components for external circuitry to comply with

IEC/EN 61000-4-5; see table 10

V_o

t_rise

04008b

V_{o nom}

Model

Inductor (L)

Capacitor (C)

24IMX70

40IMX70

110IMY70

330 µF / 100 V

150 µF / 200 V

t_startup

Fig. 4

Converter start-up and rise time

JM029

Vi+

Vi–

Reverse Polarity Protection and Fuse

The built-in suppressor diode also provides for reverse

polarity protection at the input by conducting current in the

reverse direction. An external fuse is required to limit this

current.

Fig. 5

Example for external circuitry to comply with IEC/EN 61000-

4-5; see table 10

Table 3: Recommended external fuses in the non-earthed

input line

Converter model

Fuse type

Rating

24IMX70 single-output

24IMX70 double-output

40IMX70 single-output

40IMX70 double-output

Littlefuse 166

10 A, 80 V

110IMY70 single-output Littlefuse 372

110IMY70 double-output Littlefuse 372

3.15 A, 250 V

MELCHER

The Power Partners.

BCD.00002 Rev AF, 18-Dec-2013

Page 5 of 15

1 2 3 456 7 8...15

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