RNS01EG-M6 Просмотр технического описания (PDF) - Power-One Inc.
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RNS01EG-M6 Datasheet PDF : 16 Pages
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Product Specifications
RNS Series: 5-10W DC/DC Converters
Nov 2001
18-72 & 38-75V Input
3.3V, 5.0V, 7.0V and 12V Outputs (Outputs of 2.5V & 15V, available with trimming)
Typical Application
Turn-On Input Voltage
This series of converters does not require any
external components for proper operation.
However, if the distribution of the input voltage to
the converter contains significant inductance, a
capacitor across the input terminals may be
required to stabilize the input voltage. A minimum
of 1µF, quality electrolytic / ceramic capacitor is
recommended for this purpose.
For output decoupling it is recommended to
connect, directly across the output pins, a 1µF
ceramic capacitor (for 3.3V and 5V outputs) or a
0.27µF ceramic capacitor (for 7V and 12V
outputs).
Remote Control Feature
The remote control pin functions as a normal soft
shutdown. It is referenced to the –Vin pin. With
positive logic, when the remote control pin is
pulled low, the output is turned off and the unit
goes into a very low input power mode.
An open collector switch is recommended to
control the voltage between the remote control pin
and the -Vin pin of the converter. The remote
control pin is pulled up internally, so no external
voltage source is required. The user should avoid
connecting a resistor between the remote control
pin and the +Vin pin.
(Note:- this feature is not available on 4:1 input
range devices, RNS01EE/RNS01EG/RNS0.9ET)
An external resistor can program the input voltage
at which the converter switches on. The voltage
at which the unit switches off is typically 1V below
the turn-on input voltage (Vion).
The characteristic curves below shows the typical
resistor values required to achieve adjustment of
turn-on input voltage (Vion).
To decrease Vion the resistor should be
connected between pins 10 and 11.
KOhm
1000
900
800
700
600
500
400
300
200
100
0
36
Resistance required to decrease Vion
35.5
35
34.5
34
33.5
Voltage (Vion)
The user must take care to ensure that the pin
reference for the control is connected close to the
-Vin pin. The control signal must not be
referenced ahead of EMI filtering, or remotely
from the unit. If the remote control pin is not used,
it can be left floating.
Synchronization Feature
It is possible to synchronize the switching
frequency of one or more converters to an
external symmetrical clock signal. It is
recommended that the signal be driven by a TTL
compatible output. The rise time of the clock
signal should be less than 10ns. If the
synchronization feature is not used, it should be
left open circuit.
To increase Vion the resistor should be connected
between pins 11 and 17.
KOhm
2000
1800
1600
1400
1200
1000
800
600
400
200
0
37
Resistance required to increase Vion
38
39
40
41
42
Voltage (Vion)
2-Nov-01
Rev 1.1
www.power-one.com
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