SQ48T10050-NBC0 POWER ONE, SQ48T10050-NBC0 Datasheet - Page 7
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SQ48T10050-NBC0
Manufacturer Part Number
SQ48T10050-NBC0
Description
Manufacturer
POWER ONE
Type
Step Downr
Datasheet
1.SQ48T10050-NBC0.pdf
(64 pages)
Specifications of SQ48T10050-NBC0
Output Power
50W
Output Current
10A
Input Voltage
48V
Output Voltage
5V
Screening Level
Industrial
Product Length (mm)
36.83mm
Product Height (mm)
6.52mm
Product Depth (mm)
58.42mm
Mounting Style
Through Hole
Pin Count
8
Number Of Outputs
1
Package / Case
1/8-Brick
Lead Free Status / RoHS Status
Not Compliant
Startup Information (using negative ON/OFF)
Scenario #1: Initial Startup From Bulk Supply
ON/OFF function enabled, converter started via application
of V
For this example, the total converter startup time (t
typically 4 ms.
Scenario #2: Initial Startup Using ON/OFF Pin
With V
ON/OFF pin. See Figure G.
For this example, the total converter startup time (t
typically 4 ms.
Scenario #3: Turn-off and Restart Using ON/OFF Pin
With V
then enabled via ON/OFF pin. See Figure H.
For the condition, (t
startup time (t
startup will be typically 4 ms after release of ON/OFF pin.
SEP 14, 2005 revised to NOV 06, 2006
Time
Time
Time
t
t
t
t
t
t
t
t
t
t
t
t
t
t
0
1
2
3
4
5
IN
0
1
2
3
0
1
2
3
. See Figure F.
IN
IN
previously powered, converter started via
previously powered, converter is disabled and
V
ON.
ON/OFF pin arbitrarily disabled; converter output
falls to zero; turn-on inhibit delay period (100 ms
typical) is initiated, and ON/OFF pin action is
internally inhibited.
ON/OFF pin is externally re-enabled.
Turn-on inhibit delay period ends. If ON/OFF pin
is ON, converter begins turn-on; if off, converter
awaits ON/OFF pin ON signal; see Figure G.
End of converter turn-on delay.
Converter V
ON/OFF pin is ON; system front end power is
toggled on, V
V
circuit threshold; converter enabled.
Converter begins to respond to turn-on
command (converter turn-on delay).
Converter V
V
Arbitrary time when ON/OFF pin is enabled
(converter enabled).
End of converter turn-on delay.
Converter V
IN
IN
INPUT
5
and V
crosses Undervoltage Lockout protection
- t
If (t
ON/OFF pin is locked out by startup inhibit
timer.
If (t
internally enabled.
2
at nominal value.
) is typically 104 ms. For (t
2
2
2
- t
- t
OUT
- t
1
1
1
) ≤ 100 ms, external action of
) > 100 ms, ON/OFF pin action is
OUT
OUT
OUT
) ≤ 100 ms, the total converter
are at nominal values; ON/OFF pin
IN
to converter begins to rise.
reaches 100% of nominal value.
reaches 100% of nominal value.
reaches 100% of nominal value.
Comments
Comments
Comments
2
- t
1
) > 100 ms,
3
3
- t
- t
1
1
) is
) is
Page 7 of 64
36-75 VDC Input; 1.0-12 VDC Output
ON/OFF
STATE
ON/OFF
ON/OFF
V
STATE
STATE OFF
OUT
V
IN
V
V
OUT
OUT
V
V
t
0
IN
IN
OFF
SQ48 DC-DC Series Data Sheet
ON
t
0
OFF
ON
ON
t
1
t
2
t
3
Fig. G: Startup scenario #2.
Fig. H: Startup scenario #3.
Fig. F: Startup scenario #1.
t
1
t
0
t
2
t
1
100 ms
t
2
t
3
t
3
t
4
www.power-one.com
t
5
t
t
t