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參數(shù)資料
| 型號： | PQ50073HZB60NNS |
| 廠商： | SYNQOR INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 440 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | HALF BRICK PACKAGE-9 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 1838K |
| 代理商： | PQ50073HZB60NNS |
Technical Specification
Product # PQ50073HZB60
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005484 Rev. 2
03/31/10
Page 10
Input:44-52 V
Output:7.3V
Current:60A
Part No.:PQ50073HZB60
To increase the output voltage, the user should connect a
resistor between Pin 6 (TRIM) and Pin 7 (SENSE(+) input). For
a desired increase of the nominal output voltage, the value of
the resistor should be
Figure B graphs the relationship between the trim resistor value,
Rtrim-up and Rtrim-down, showing the total range the output
voltage can be trimmed up or down.
Figure B: Trim Graph for 7.3Vout module
Note: The TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
output voltage too high may cause the over-voltage protection
circuit to engage, particularly during transients.
It is not necessary for the user to add capacitance at the Trim
pin. The node is internally filtered to eliminate noise.
Total DC Variation of Vout: For the converter to meet its full
specifications, the maximum variation of the DC value of Vout,
due to both trimming and remote load voltage drops, should not
be greater than that specified for the output voltage trim range.
PROTECTION FEATURES
Input Under-Voltage Lockout: The converter is designed
to turn off when the input voltage is too low, helping to avoid
an input system instability problem, which is described in more
detail in the application note titled “Input System Instability”
on the SynQor website. The lockout circuitry is a comparator
with DC hysteresis. When the input voltage is rising, it must
exceed the typical “Turn-On Voltage Threshold” value* before
the converter will turn on. Once the converter is on, the input
voltage must fall below the typical Turn-Off Voltage Threshold
value before the converter will turn off.
Output Current Limit: If the output current exceeds the “Output
DC Current Limit Inception” point*, then a fast linear current limit
controller will reduce the output voltage to maintain a constant
output current. If as a result, the output voltage falls below the
“Output DC Current Limit Shutdown Voltage”* for more than
50ms, then the unit will enter into hiccup mode, with a 500ms
off-time. The unit will then automatically attempt to restart.
Back-Drive Current Limit: If there is negative output current
of a magnitude larger than the “Back-Drive Current Limit while
Enabled” specification*, then a fast back-drive limit controller will
increase the output voltage to maintain a constant output current.
If this results in the output voltage exceeding the “Output Over-
Voltage Protection” threshold*, then the unit will shut down. The
full I-V output characteristics can be seen in Figure 17.
Output Over-Voltage Limit: If the voltage directly across
the output pins exceeds the “Output Over-Voltage Protection”
threshold*, the converter will immediately stop switching. This
shutdown is latching; unlike other shutdown types, the converter
will not restart unless the input power is cycled or the ON/OFF
input is toggled.
Over-Temperature Shutdown: A temperature sensor on the
converter senses the average temperature of the module. The
thermal shutdown circuit is designed to turn the converter off
when the temperature at the sensed location reaches the “Over-
Temperature Shutdown” value*. It will allow the converter to
turn on again when the temperature of the sensed location falls
by the amount of the “Over-Temperature Shutdown Restart
Hysteresis” value*.
* See Electrical Characteristics page.
0.0
0.1
1.0
10.0
100.0
1,000.0
10,000.0
0
5
10
15
20
25
30
35
40
45
50
Tr
im
R
es
is
ta
nc
e
(k
O
hm
s)
% Increase in Vout
% Decrease in Vout
Rtrim-
up
kW
=
Vnominal
1.225
VDES – VNOM
x VDES + VNOM
– 2
)
(
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