NVD0.4YJJ-M6 데이터 시트보기 (PDF) - Power-One Inc.
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NVD0.4YJJ-M6 Datasheet PDF : 11 Pages
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NV DC-DC Series Data Sheet
6W SMT Converter • Wide Input • 3.3V to +/-24V Outputs
Temperature Derating Curves
The derating curves below give an indication of the
output power achievable with and without forced-air
cooling. However in the final application the
temperature rise of the converter is also influenced
by factors such as heat conduction through the leads
to the PCB, orientation, the temperature of
surrounding components and the input voltage. To
ensure the reliability of the converter, care must be
taken to guarantee that the maximum case
temperature is not exceeded under any conditions.
The measurement point for case temperature is
specified on the mechanical drawing (Tc).
Temperature derating for 18-36 V and 36-75 V input
voltage ranges:
Temperature Derating for 2:1 Input Ratio
Models
120
100
80
60
400LFM (2 m/s)
200LFM (1 m/s)
40
0 LFM
20
0
Ambient Temp. (deg °C)
The 9-36 V and 18-75 V input voltage versions of this
series feature a 4:1 input voltage range and can
operate at full power at 85 ºC ambient temperature
with only convection cooling.
Temperature derating for 9-36 V and 18-75 V input
voltage ranges:
Temperature Derating for 4:1 Input Ratio Models
120
100
80
60
200LFM (1 m/s)
40
0 LFM
20
0
Ambient Temp. (deg °C)
Typical Application
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 0.47μF, quality
electrolytic / ceramic capacitor is recommended for
this purpose. For output decoupling it is
recommended to connect, directly across the output
pins, a 0.47 μF ceramic capacitor (for 3.3 V and 5 V
outputs) or a 0.27 μF ceramic capacitor (for other
outputs).
Care must be taken to ensure the maximum rated
output capacitance for the device is not exceeded
when dimensioning decoupling capacitors in the
system as this could cause the unit to detect an
overload and enter a ‘hiccup’ mode of operation.
APR 20, 2006 revised to MAR 12, 2007
Page 5 of 11
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