參數(shù)資料
型號: EQD020A0F641Z
廠商: LINEAGE POWER LLC
元件分類: 電源模塊
英文描述: 1-OUTPUT 66 W DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT, EIGHTH BRICK-9
文件頁數(shù): 2/15頁
文件大小: 272K
代理商: EQD020A0F641Z
Data Sheet
November 9, 2006
EQD020 Series Single Output: Eighth Brick Power Modules:
19-60Vdc Input; 3.3Vdc Output; 66W
Tyco Electronics Power Systems
10
Feature Descriptions (continued)
Output Voltage Programming
The output voltage is adjustable +10% to -10% of
3.3V. A resistor placed between the Trim pin and
Sense (+) increases the output voltage and a resistor
placed between the Trim pin and Sense (-) decreases
the output voltage. Figure 21 shows the circuit
configuration using an external resistor. The trim
resistor should be positioned close to the module. If
the trim pin is not used then the pin shall be left open.
The following equations determine the required
external resistor value to obtain a percentage output
voltage change of Δ%.
To decrease output voltage set point:
Ω
Δ
=
K
R
down
trim
2
.
10
%
510
Where,
100
%
,
×
=
Δ
nom
o
desired
nom
o
V
Vdesired = Desired output voltage set point (V).
To increase the output voltage set point
(
)
Ω
Δ
Δ
+
=
K
V
R
nom
o
up
trim
2
.
10
%
510
%
*
225
.
1
%
100
*
1
.
5
,
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum absolute increase in output voltage,
due to simultaneous remote sense and trim
increases, shall not exceed the larger of the specified
individual remote sense or trim maximum limits shown
in the Features Specifications table.
VO(+)
TRIM
VO(-)
Rtrim-down
LOAD
VIN(+)
ON/OFF
VIN(-)
Rtrim-up
SENSE (+)
SENSE (-)
Figure 21. Circuit Configuration to program output
voltage using an external resistor.
Pre-Bias Immunity
The modules are able to start into a pre-biased output
with a monotonic rise of the output voltage. During
shutdown an internal feature implemented in the
module ensures there will be no reverse current.
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