參數(shù)資料
型號(hào): PT4682N
廠商: Texas Instruments, Inc.
英文描述: 20-A 24-V Input Dual Output Isolated DC/DC Converter
中文描述: 20,一個(gè)24 V輸入雙輸出隔離式DC / DC轉(zhuǎn)換器
文件頁(yè)數(shù): 2/16頁(yè)
文件大小: 290K
代理商: PT4682N
For technical support and more information, see inside back cover or visit www.ti.com
Pin Descriptions
+Vin:
The positive input supply for the module with
respect to –V
in
. If powering the module from a -24V
telecom central office supply, this input is connected
to the primary system ground.
–Vin:
The negative input supply for the module, and
the 0VDC reference for the EN 1, EN 2, TEMP, and
AUX signals. When the module is powered from a
+24V supply, this input is connected to the 24V Return.
EN 1:
The negative logic input that enables the
module output. This pin is TTL compatible and
referenced to –V
in
. A logic ‘0’ at this pin enables the
module’s outputs. A logic ‘1’ or high impedance
disables the module’s outputs. If not used, the pin
must be connected to –V
in
.
EN 2:
The positive logic input that enables the
module output. This pin is TTL compatible and
referenced to –V
in
. A logic ‘1’ or high impedance
enables the module’s outputs. If not used, the pin
should be left open circuit.
TEMP:
This pin produces an output signal that tracks
the module’s metal case temperature. The output
voltage is referenced to –V
in
and rises approximately
10mV/°C from an intital value of 0.1VDC at -40°C
(V
Temp
=0.5 + 0.01·T
Case
). The signal is available
whenever the module is supplied with a valid input
voltage, and is independant of the enable logic status.
(
Note:
A load impedance of less than 1M
will adversly
affect the module’s over-temperature shutdown threshold.
Use a high-impedance input when monitoring this
signal.)
AUX:
Produces a regulated output voltage of 11.6V
±5%, which is referenced to –V
in
. The current drawn
from the pin must be limited to 10mA. The voltage
may be used to indicate the output status of the
module to a primary referenced circuit, or power a
low-current amplifer.
Vo
1
:
The higher regulated output voltage, which is
referenced to the COM node.
Vo
2
:
The lower regulated output voltage, which is
referenced to the COM node.
COM:
The secondary return reference for the module’s
two regulated output voltages. It is DC isolated from
the input supply pins.
Vo
1
Adjust:
Using a single resistor, this pin allows Vo
1
to be adjusted higher or lower than the preset value.
If not used, this pin should be left open circuit.
Vo
2
Adjust:
Using a single resistor, this pin allows Vo
2
to be adjusted higher or lower than the preset value.
If not used, this pin should be left open circuit.
On/Off Logic
Pin 3
Pin 4
Output Status
1
×
Off
0
1
On
×
0
Off
Pin-Out Information
Pin
Function
1
2
3
4
5
6
7
8
9
+Vin
-Vin
EN 1
EN 2
TEMP
AUX
Do Not Connect
Do Not Connect
+Vo
1
Pin
Function
10
11
12
13
14
15
16
17
18
+Vo
1
+Vo
1
+Vo
1
Vo
1
Adjust
COM
COM
COM
COM
COM
Notes:
Logic 1 =Open collector
Logic 0 = –Vin (pin 2) potential
For positive Enable function, connect pin 3
to pin 2 and use pin 4.
For negative Enable function, leave pin 4
open and use pin 3.
Note: Shaded functions indicate signals that are
referenced to the input (-Vin) potential.
Pin
Function
19
20
21
22
23
24
25
26
COM
Vo
2
Adjust
+Vo
2
+Vo
2
+Vo
2
+Vo
2
Do Not Connect
Do Not Connect
PT4680 Series
20-A 24-V Input Dual Output
Isolated DC/DC Converter
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PT4683 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-A 24-V Input Dual Output Isolated DC/DC Converter
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PT4683C 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 3.3/1.8V 20A/2-Out 24V Inp Iso DC/DC RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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