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參數(shù)資料
| 型號： | PTH03050WAST |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | SMT-6 |
| 文件頁數(shù)： | 6/19頁 |
| 文件大?。?/td> | 590K |
| 代理商： | PTH03050WAST |
Application Notes
For technical support and further information visit http://power.ti.com
PTH/PTV Series of Wide-Output Adjust
Power Modules (3.3/5-V Input)
Remote Sense
Products with this feature incorporate an output voltage
sense pin, Vo Sense. A remote sense improves the load
regulation performance of the module by allowing it to
compensate for any ‘IR’ voltage drop between itself and
the load. An IR drop is caused by the high output current
flowing through the small amount of pin and trace resis-
tance. To use this feature simply connect the Vo Sense pin
to the Vout node, close to the load circuit (see data sheet
standard application). If not used, the Vo Sense pin can
be left open-circuit. An internal low-value resistor (15-
or less) is connected between the Vo Sense and Vout. This
ensures the output voltage remains in regulation.
With the sense pin connected, the difference between
the voltage measured directly between the Vout and GND
pins, and that measured from Vo Sense to GND, is the
amount of IR drop being compensated by the regulator.
This should be limited to a maximum of 0.3 V.
Note: The remote sense feature is not designed to compensate
for the forward drop of non-linear or frequency dependent
components that may be placed in series with the converter
output. Examples include OR-ing diodes, filter inductors,
ferrite beads, and fuses. When these components are enclosed
by the remote sense connection they are effectively placed
inside the regulation control loop, which can adversely affect
the stability of the regulator.
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