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PQ60050EGL15 Datasheet, PDF (12/13 Pages) SynQor Worldwide Headquarters – Eighth-brick DC/DC Converter | |||
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Technical Specification
Input: 35-75 V
Output: 5.0 V
Current: 15 A
Package: Eighth-brick
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.
Vin
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
OFF ON
OFF
Vout
200ms
(typical start-up
inhibit period)
200ms
200ms
t0
t1
t2
Figure F: Startup Inhibit Period (turn-on time not to scale)
ON
9ms (typical
turn on time)
t
Product # PQ60050EGL15
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG650D Rev. C
11/8/04
Page 12
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