SQ60120QPB33 Datasheet, PDF (12/14 Pages) SynQor Worldwide Headquarters – High efficiency, 94.3% at full rated load current

Application Section
Technical
Specification
SQ60120QPB33
APPLICATION CONSIDERATIONS
Startup Inhibit Period: Figure E details the Start-Up
Vin
Inhibit Period for the BusQor module when Vin is applied
with the On/Off pin asserted (enabled). Before time t₁,
when the input voltage Off pin asserted (enabled). Before
UVLO
time t₁, when the input voltage is below the UVL threshold, _On/Off
the unit is disabled by the Input Under-Voltage Lockout ^{(N logic)}
feature. When the input voltage rises above the UVL
OFF
threshold, the Input Under-Voltage Lockout is released, and
a typical Startup Inhibit Period of 8ms from a Vin start-up.
Once the module recognizes it should be on it waits an
ON
additional 4ms before it starts. When starting from an on/
t0
t1
t2
t3
t
off event the module has an inhibit time of 200ms like our
Vout
standard products. The output builds up to 90% or higher 12V
of the nominal voltage and stabilizes to its nominal output
voltage in a total time of 15ms typical.
12 ms
200 ms
At time t₂, when the On/Off pin is de-asserted (disabled),
the BusQor module stops switching immediately. Fall time
from 12V to 0V is dependent on output capacitance load
current, and any parasitic trace inductance in the output
load circuit.
At time t₃, when the On/Off pin is re-asserted (enabled),
the BusQor module output begins to build up after the
inhibit period of 200ms typical.
Start-up
Inhibit
Fault Inhibit
Start-Up
Time
15 ms
Figure E: Power Up/Down Diagram (not to scale) showing Start-Up Inhibit Period.
Refer to the Control Features section of the data sheet for
details on enabling and disabling methods for N and P logic
type modules.
Product # SQ60120QPB33
Phone [phone]
www.synqor.com
Doc.# 005-0005266 Rev. G
05/13/15
Page 12