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參數資料
| 型號： | 110IMX35D12D12-8IZ-G |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 4-OUTPUT 35 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 2/15頁 |
| 文件大小： | 191K |
| 代理商： | 110IMX35D12D12-8IZ-G |
AUG 13, 2002
Rev 1.0
Page 10 of 15
www.power-one.com
IMX35 Series: 35W DC-DC Converters
Product Specifications
9-36V, 18-75V, 40-121V & 60-150V Inputs
Aug 2002
Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V
Programmable Input Undervoltage Lockout PUL
A special
feature
of
these
units
is
the
accurate
undervoltage lockout protection which protects the unit
(and the system) from large currents caused by operation
at low voltages. This ensures easier start-up in distributed
power systems.
Table 10: Turn on and turn off voltage
Type
Trigger level
Hysteresis
Units
20 IMX 35
7...8
<0.5
V
40 IMX 35
14...15.5
<1
70 IMX 35
31 ... 34
<3
110 IMX 35
42 ...50
<8
See: Electrical input data for a description of the turn on
turn off voltage levels of the various types.
The under voltage lockout levels may be programmed by
use of an external resistor to Trim up the preset levels as
indicated in the table below.
Table 11: Typical values for Rext and the respective lock-
out voltage for input voltage.
20 IMX 35
40 IMX 35
RPUL [k
]
Ui min [V]
Rext [k
]
Umin [V]
≤8
≤15.5
39
10
43
22
19
12
16
26
13
14
10
28
9.1
16
0
32
70 IMX 35
110 IMX 35
RPUL [k
]
Ui min [V]
Rext [k
]Umin [V]
31
42
270
40
270
50
110
50
120
60
80
55
51
75
Synchronisation (W)
It is posible to synchronise the switching frequency of one
or more converters to an external symmetrical clocksignal.
Consult factory if this option is required, for full application
details.
This logic input can be used to synchronise the oscillator to
an external frequency source. This pin is edge triggered
with TTL thresholds, and requires a source frequency of
490...540 kHz (duty cycle 10...90%). The external source
frequency is internally divided by 2 to define the switching
frequency for the converter. If unused, this pin can be con-
nected to V1– (pin 2) or left open-circuit.
Reference (Ref)
The signal output provides a stable 5 V (±0.1 V) reference
signal on pin Ref. It is protected by a 1 k
resistor. This sig-
nal may be used also in conjunction with the Trim input pin
5 (primary side) as a limited external voltage reference.
It is recommended to connect a filter capacitor (0.1
F)
between Ref and Vi–, if Vref is used.
Shut Down Function
The outputs of the converters may be enabled or disabled
by means of a logic signal (TTL, CMOS, etc.) applied to the
shut down pin. If the shut down function is not required then
it should be left open-circuit.
Converter operating:
2.0...20 V
Converter shut down:
–10...0.7 V
Option i
Inhibit (negative shutdown logic)
The output of the converter may be enabled or disabled by
means of a logic signal (TTL, CMOS, etc.) applied to the
inhibit pin. No output voltage overshoot will occur when the
unit is turned on. If the inhibit function is not required the
inhibit (pin 8) should be connected to Vi– to enable the out-
put (active low logic, fail safe).
Converter operating:
–10 V...0.8 V
Converter inhibited
or inhibit pin left open circuit:
2.4 V...20 V
Fig. 16
If the inhibit is not used the inhibit pin should be con-
nected to Vi–
Vi+
Vi –
i
06138
4
8
2
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