70IMX4-15-8 POWER ONE, 70IMX4-15-8 Datasheet - Page 5

• Manufacturer Part Number: 70IMX4-15-8
• Description: Module DC-DC 1-OUT 15V 0.28A 4.2W 13-Pin DIL
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of 70IMX4-15-8

• Package: 13DIL
• Output Current: 0.28(Typ) A
• Output Voltage: 15 V
• Input Voltage: 70 V
• Number Of Outputs: 1
• Output Power: 4.2(Typ) W

BCD20006-G Rev AA, 8-Apr-09
Table 5: Components for the circuitry fig. 8
Input Transient Voltage Protection
In many applications transient voltages on the converter input
are always possible. These may be caused for example by
short circuits between Vi+ and Vi–, where the network
inductance may generate high energy pulses.
In order to protect the converter, a large transient voltage
suppressor is fitted to the input; see table below.
Table 4: Built-in transient voltage suppressor
If transients generating currents above the peak pulse current
I
shown in figure 8 is recommended. It provides compliance with
transients according to IEC/EN 61000-4-5, level 2. The comp-
onents are specified in table 5.
If 40IMX4 models should withstand 150 V transients according
to 19Pfl1, the same external circuitry with similar components
as shown in figure 8 can be used.
Fig. 8
External circuitry to comply with
IEC/EN 61000-4-5, level 2.
Model
L
C
D
PP
Model
20IMX4
40IMX4
70IMX4
i
i
are possible, an external limiting network such as the circuit
330 H, 0.42
ON 1.5KE 39 A
68 F, 50 V
20IMX4
1 A
Breakdown
voltage
V
100 V
150 V
L
BR nom
40 V
i
®
C
i
330 H, 0.42
ON 1.5KE 82 A
+
68 F, 100 V
40IMX4
0.6 A
Peak power
at 1 ms
600 W
600 W
600 W
P
D
P
Vi+
Vi–
330 H, 0.65
100 F, 200 V
Peak pulse
70IMX4
current
10.3 A
0.3 A
4.1 A
2.9 A
–
I
PP
04036b
Page 5 of 12
Fuse and Reverse Polarity Protection
A suppressor diode on the input also protects against reverse
polarity input voltage. An external fast fuse is required to limit
this reverse current:
Table 6: External input fuse
20IMX4
40IMX4
70IMX4
Model
IMX4 DC-DC Series Data Sheet
4-Watt DC-DC Converters
Fast 0.315 A
Fuse type
Fast 0.5 A
Fast 1 A
www.power-one.com