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参数资料
| 型号： | YNL12S10015-0G |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT |
| 文件页数： | 25/26页 |
| 文件大小： | 438K |
| 代理商： | YNL12S10015-0G |
YNL12S100xy DC-DC Converter Family Data Sheet
9.6-14 VDC Input; 1.0-5.0 VDC Output @ 10A
MAR 23, 2007 revised to APR 16, 2007
Page 8 of 26
www.power-one.com
refer to the vertical thermal derating for all the
output voltages in general.
The following pages contain specific plots or
waveforms
associated
with
the
converter.
Additional comments for specific data are provided
below.
Test Conditions
All thermal and efficiency data presented were
taken with the converter soldered to a test board,
specifically a 0.060” thick printed wiring board
(PWB) with four layers. The top and bottom layers
were not metalized. The two inner layers,
comprising two-ounce copper, were used to
provide traces for connectivity to the converter.
The lack of metalization on the outer layers as well
as the limited thermal connection ensured that
heat transfer from the converter to the PWB was
minimized. This provides a worst-case but
consistent scenario for thermal derating purposes.
All measurements requiring airflow were made in
vertical and horizontal wind tunnel facilities using
Infrared (IR) thermography and thermocouples for
thermometry.
Ensuring components on the converter do not
exceed their ratings is important to maintaining
high reliability. If one anticipates operating the
converter at or close to the maximum loads
specified in the derating curves, it is prudent to
check actual operating temperatures in the
application. Thermographic imaging is preferable;
if
this
capability
is
not
available,
then
thermocouples
may
be
used.
Power-One
recommends the use of AWG #40 gauge
thermocouples to ensure measurement accuracy.
Careful routing of the thermocouple leads will
further minimize measurement error. Refer to Fig.
E for optimum measuring thermocouple location.
Thermal Derating
Load current vs. ambient temperature and airflow
rates are given in Figs. x.1 to x.2 for maximum
temperature of 110°C. Ambient temperature was
varied between 25°C and 85°C, with airflow rates
from 30 to 500 LFM (0.15 m/s to 2.5 m/s), and
vertical and horizontal converter mounting. The
airflow during the testing is parallel to the short
axis of the converter, going from pin 1 and pin 6 to
pins 2 – 5.
For each set of conditions, the maximum load
current was defined as the lowest of:
(i) The output current at which either any MOSFET
temperature did not exceed a maximum specified
temperature (110 °C) as indicated by the
thermographic image, or
(ii) The maximum current rating of the converter
(10 A)
During normal operation, derating curves with
maximum FET temperature less than or equal to
110 °C should not be exceeded. Temperature on
the PCB at the thermocouple location shown in
Fig. E should not exceed 110 °C in order to
operate inside the derating curves.
Fig. E: Location of the thermocouple for thermal testing.
Efficiency
Figure x.3 shows the efficiency vs. load current
plot for ambient temperature of 25 C, airflow rate
of 200 LFM (1 m/s) and input voltages of 9.6 V,
12 V, and 14 V.
Power Dissipation
Fig. x.4 shows the power dissipation vs. load
current plot for Ta = 25 C, airflow rate of 200 LFM
(1 m/s) with vertical mounting and input voltages
of 9.6 V, 12 V. and 14 V.
Ripple and Noise
The output voltage ripple waveform is measured at
full rated load current. Note that all output voltage
waveforms are measured across a 1
μF ceramic
capacitor.
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