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参数资料
| 型号： | PTQB425080N3AD |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 200 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-7 |
| 文件页数： | 9/14页 |
| 文件大小： | 466K |
| 代理商： | PTQB425080N3AD |
Track
SmartSync
On/Off
4
7
1
3
2
6
5
+VI
VI
+VO
VO
On/Off
4
7
1
3
2
+VI
VI
+VO
VO
SLTS269B – DECEMBER 2006 – REVISED NOVEMBER 2007........................................................................................................................................ www.ti.com
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NAME
NO.
The positive input for the module with respect to -VI. When powering the module from a negative input voltage,
+VI
(1)
1
this input is connected to the input source ground.
The negative input supply for the module, and the 0-V reference for the enable input. When powering the module
–VI
(1)
3
from a positive source, this input is connected to the input source return.
This input controls the On/Off status of the output voltage. It is either driven low (–VI potential), or left open-circuit.
Remote On/Off
2
For units identified with the N (negative logic) option, applying a logic low to this pin enables the output. And for
units identified with the P (positive logic) option, the output is disabled.
This is the positive power output with respect to –VO. It is isolated from the input power pins and produces a valid
+VO
7
output voltage approximately 80 ms before the voltage at the Track terminal is allowed to rise. This provides the
required standby power source to any downstream nonisolated modules in power-up sequencing applications.
This is the output power return for both the +VO output voltage. This terminal should be connected to the common
–VO
4
of the load circuit.
This terminal may be used in power-up sequencing applications to control the output voltage of Auto-Track
AutoTrack
compatible modules, powered from the converter +VO output. The converter Track control has an internal,
Enable
6
open-collector transistor, which holds the voltage close to –VO potential for approximately 80 ms after the +VO
(Optional)
output is in regulation. Following this delay, the Track voltage rises simultaneously with the output voltages of all
other modules controlled by Auto-Track. See Application Information for more details.
SmartSync
This terminal sources a 275kHz clock signal that can be used to synchronize the switching frequency of multiple
Clock Drive
5
downstream point-of-load power modules. Frequency synchronization eliminates beat frequencies and reduces
(Optional)
the external filtering requirement. See Application Information for more details.
(1)
These functions indicate signals electrically common with the input.
PTQB425080x3
PTQB425080x2
4
Copyright 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): PTQB425080
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