IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Electrical Input Data
General conditions:
TA = 25°C, shutdown and R pin left open-circuit, unless specified.
Table 2: Input data
Input
24IMX70
typ
40IMX70
typ
Unit
Characteristics
Conditions
min
max
min
max
Vi
Operating input voltage
TA min to TA max, Io = 0 – Io nom
15 1
33.6
25 1
72
VDC
Vi nom
Vi 2s
Vi sur
tstart up
Nominal input voltage
Temporary input voltage
Repetitive surge voltage
24
(36) 48
for 2 s, no shutdown
shutdown, no damage
12 1
40.1
50
21.6 1
75
100
Converter
Switch on Worst case condition at
500
1000
1000
ms
––
start-up time
Vi min and full load
SD high
trise
Ii o
Rise time
Vi = 0 → Vi nom, Io nom
Io = 0, Vi min – Vi max
Io = 0 – Io nom
25
No-load input current
Reflected ripple current
Inrush peak current
Input capacitance
200
mA
mApp
A
Iirr
30
Iinr p
Ci
Vi = Vi max
25
24
for surge calculation
Converter disabled
Converter operating
µF
––
VSD
Shutdown voltage
–0.7 to +0.7
– 0.7 to +0.7
V
2 to 20 (or open-circuit)
2 to 20 (or open-circuit)
––
I SD
Shutdown pin current
Input current at shutdown
Switching frequency
– 0.2
mA
––
Ii SD
Vi min – Vi max
2
fs
Vi min – Vi max, Io = 0 – Io nom
200 2
210 2
200
kHz
Input
110IMY70
typ
Unit
Characteristics
Conditions
min
max
Vi
Operating input voltage
TA min to TA max, Io = 0 – Io nom
50
137.5
VDC
Vi nom
Vi 2s
Vi sur
tstart up
Nominal input voltage
Temporary input voltage
Repetitive surge voltage
(72, 96,) 110
250
for 2 s, no shutdown
shutdown, no damage
43.2 1
154
168
500
500
50
Converter
Switch on
Worst case condition at
Vi min and full load
ms
––
start-up time
SD high
trise
Rise time
single-outp. Vi = 0 → Vi nom, Io nom
double-outp.
10
25
20
Ii o
No-load input current
Reflected ripple current
Inrush peak current
Input capacitance
Io = 0, Vi min – Vi max
Io = 0 – Io nom
50
mA
mApp
A
Iirr
200
Iinr p
Ci
Vi = Vi max
35
7.7
for surge calculation
Converter disabled
Converter operating
µF
––
VSD
Shutdown voltage
–0.7 to +0.7
V
2 to 20 (or open-circuit)
––
I SD
Shutdown pin current
–0.2
mA
––
Ii SD
Input current at shutdown Vi min – Vi max
Switching frequency Vi min – Vi max, Io = 0 – Io nom
2
210 2
fs
200 2
kHz
1
Vi min will not be as stated, if Vo is increased above Vo nom by use of R-input. If the output voltage is set to a higher value, Vi min will be
proportionately increased.
typ. 240 kHz for single-output models, typ. 300 kHz for models with 5 V output
2
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 4 of 15