參數(shù)資料
型號(hào): PTB78560CAH
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源模塊
英文描述: 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT, DIP11
文件頁(yè)數(shù): 8/27頁(yè)
文件大?。?/td> 643K
代理商: PTB78560CAH
www.ti.com
Negative Output Enable (Positive Inhibit)
DC/DC
Module
PEN
NEN
2
3
4
1
+VI
-VI
+VI
-VI
1=OutputsOn
Q1
BSS138
On/Off Enable Turn-On Time
t 5 ms/div
Q1 VDS (5 V/div)
II (1 A/div)
VOBus (5 V/div)
SLTS249 – JUNE 2005
To configure the converter for a negative enable function, PEN (pin 2) is left open circuit, and the system On/Off
control signal is applied to NEN (pin 3). A low-level control signal (less than 0.8 V) must then be applied to pin 3
to enable an output from the converter. An example of this configuration is detailed in Figure 24.
Figure 24. Negative Enable Configuration
Once enabled, the converter executes a soft-start power up. The converter exibits a short delay of approximately
7 ms, measured from the transition of the enable signal to the instance the VO Bus output begins to rise. The
output is in regulation within 20 ms.
Figure 25. Output Enable Power-Up Characteristic
16
相關(guān)PDF資料
PDF描述
PTB78560AAH 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE
PTB78560CAS 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE
PTB78560BAZ 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE
PTB78560BAH 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE
PTB78560CAZ 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE
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