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參數(shù)資料
| 型號(hào)： | PQ60120QZB33PNS-G |
| 廠(chǎng)商： | SYNQOR INC |
| 元件分類(lèi)： | 電源模塊 |
| 英文描述： | 1-OUTPUT 400 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, QUARTER BRICK PACKAGE-8 |
| 文件頁(yè)數(shù)： | 2/13頁(yè) |
| 文件大?。?/td> | 2197K |
| 代理商： | PQ60120QZB33PNS-G |
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Product # PQ60120QZB33
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005704 Rev. C
01/20/11
Page 10
Technical
Specification
PQ60120QZB33
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.
0.1
1.0
10.0
100.0
1,000.0
10,000.0
100,000.0
1,000,000.0
0
5
10
15
20
25
30
35
40
45
50
Tr
im
Re
si
st
an
ce
(k
O
hm
s)
% Increase in Vout
% Decrease in Vout
Figure B: Trim Graph for 12Vout 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 tran-
sients.
It is not necessary for the user to add capacitance at the Trim
pin. The node is internally filtered to eliminate noise.
Limited 10% up-trim:
This converter is capable of operat-
ing for an indefinite period of time with the output trimmed
up to 5% above the nominal 12V output level*. It may also
be trimmed down by as much as 50% (to 6.0V) indefinitely.
This converter is also capable of being trimmed up by as
much as 10% (up to 13.2V) for shorter periods of time that
are not a significant fraction of the product lifetime. For
example, in a test situation, or for output voltage margining
where it would remain trimmed up between 5% and 10% of
the nominal voltage for a few hundred hours, but not for an
indefinite period or the product lifetime. The OVP trip point
is set above this level, so it will not shut down from output
overvoltage protection when trimmed up between 5% and
10%. Continuous operation of this converter while trimmed
up more than 5% could affect long term reliability.
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 volt-
age 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 com-
parator with DC hysteresis. When the input voltage is ris-
ing, 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 lin-
ear 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 auto-
matically attempt to restart.
Back-Drive Current Limit:
If there is negative output cur-
rent 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 characteris-
tics can be seen in Figure 14.
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.
* See Electrical Characteristics page.
Rtrim-
up
(kW)
)
where
VOUT = Nominal Output Voltage
=
(
_ 511 _ 10.22
5.11VOUT(100+D%)
1.225
D%
Applications Section
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