NGA10S15018DC Просмотр технического описания (PDF) - Murata Power Solutions
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NGA10S15018DC Datasheet PDF : 5 Pages
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NGA Series
Non-Isolated Wide Input DC/DC Converters
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Transient response Max.
over-shoot
Transient response Max.
under-shoot
Under voltage lock out
Start delay
ESD
Conditions
50% load change, 1.8V output types
50% load change, 2.5V output types
50% load change, 3.3V output types
50% load change, 5.0V output types
50% load change, 1.8V output types
50% load change, 2.5V output types
50% load change, 3.3V output types
50% load change, 5.0V output types
1.8V, 2.5V & 3.3V output types
5.0V output types
VIN Min. to VIN Max.
400VDC from 100pF capacitor via 1500Ω resistance
APPLICATION NOTES
Min.
Typ.
Max.
Units
270
300
330
kHz
90 (160)
84 (145)
83 (130)
mV (μs)
75 (40)
64 (160)
86 (145)
84 (120)
mV (μs)
74 (80)
4.0
V
5.0
100
ms
Meets MIL-STD-833F method 3015.7
External Capacitance
External capacitors are necessary in order to guarantee stability and full paramet-
ric performance over the full line and load range. All parts have been tested and
characterised using the following values and test circuit.
CIN
100μF, 50V
Value
COUT
100μF, 10V
Voltage trimming
The trimming (adjust) input on the device allows output voltage adjustment to
within ±5%1 of the desired VOUT using a resistor with a value determined by the
following equations.
When open circuit, the output will be +5V.
A resistor (RD) between the trim pin and the output pin will adjust the output volt-
age between +5V to +1.8V.
1
RD
=
(22
[1.028VO-1])-1-0.011
7*/
/("
3%
7"%+
7065
Test Circuit
7*/
$*/
/("
7065
$065
$0..0/
$0..0/
Shutdown
When the shutdown pin is shorted to Common, the device’s output will be dis-
abled. To shutdown the device the pin should be taken below 0.8V using either an
open collector pull down or by using isolated delay contacts. To enable the device
output the shutdown pin should be left floating or taken no lower than +1.5V to a
maximum of (+28V).
If the shutdown pin is to be connected to a long wire, it is recommended that a
capacitor (10nF) decouples the shutdown pin to Common in order to avoid the risk
of injecting noise into the device circuit.
$PNNPO
4%
A resistor (RU) between the trim pin and the Common pin will adjust the device
output from +5V to +5.5V.
( ) 1
RU
=
(1.02VO)-1
91
-0.0455
7*/
/("
7"%+
7065
36
4%
$PNNPO
0''
0/
55-
,û
/("
4%
#$PSFRVJW
O'
PQUJPOBM
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
1. Accuracy of adjustment is subject to tolerance of resistors and initial output accuracy.
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KDC_NGAC.E02 Page 2 of 5
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