參數(shù)資料
型號(hào): PQ60033EGA20NRS-G
廠商: SYNQOR INC
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 PACKAGE-8
文件頁數(shù): 4/13頁
文件大?。?/td> 1209K
代理商: PQ60033EGA20NRS-G
Technical
Specification
PQ60033EGx20
Product # PQ60033EGx20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005349 Rev. A
09/23/09
Page 12
Startup Inhibit Period: The Startup Inhibit Period ensures that
the converter will remain off for approximately 200ms when it is
shut down for any reason. When an output short is present, this
generates a 5Hz “hiccup mode,” which prevents the converter
from overheating. In all, there are seven ways that the converter
can be shut down, initiating a Startup Inhibit Period:
Input Under-Voltage Lockout
Input Over-Voltage Shutdown (not present in Eighth-brick)
Output Over-Voltage Protection
Over Temperature Shutdown
Current Limit
Short Circuit Protection
Turned off by the ON/OFF input
Figure F shows three turn-on scenarios, where a Startup Inhibit
Period is initiated at t0, t1, and t2:
Before time t0, when the input voltage is below the UVL threshold,
the unit is disabled by the Input Under-Voltage Lockout feature.
When the input voltage rises above the UVL threshold, the Input
Under-Voltage Lockout is released, and a Startup Inhibit Period is
initiated. At the end of this delay, the ON/OFF pin is evaluated,
and since it is active, the unit turns on.
At time t1, the unit is disabled by the ON/OFF pin, and it cannot
be enabled again until the Startup Inhibit Period has elapsed.
When the ON/OFF pin goes high after t2, the Startup Inhibit
Period has elapsed, and the output turns on within the typical
Turn-On Time.
Figure F: Startup Inhibit Period (turn-on time not to scale)
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
Vout
Vin
200ms
(typical start-up
inhibit period)
t0
t1
ON
OFF
200ms
t2
t
9ms (typical
turn on time)
ON
OFF
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