HBA48T12280 Power-One, HBA48T12280 Datasheet - Page 6

• Manufacturer Part Number: HBA48T12280
• Description: Hba48t12280 Dc-dc Converter 36-75 Vdc Input; 28 Vdc @ 12.5 A Output
• Manufacturer: Power-One

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 30 ms.
Scenario #2: Initial Startup Using ON/OFF Pin
With V
ON/OFF pin.
For this example, the total converter startup time (t
typically 15
BCD.00009.1 Rev. AA, 20-Oct-09
Time
Time
Startup Information (using negative ON/OFF)
t
t
t
t
t
t
t
t
0
1
2
3
0
1
2
3
IN
.
IN
previously powered, converter started via
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 (after 15 ms turn-on delay).
Converter V
V
Arbitrary time when ON/OFF pin is enabled
(converter enabled).
End of converter turn-on delay.
Converter V
ms.
IN
INPUT
crosses undervoltage Lockout protection
at nominal value.
OUT
OUT
IN
to converter begins to rise.
reaches 100% of nominal value.
reaches 100% of nominal value.
Comments
Comments
3
3
- t
- t
1
1
) is
) is
HBA48T12280 DC-DC Converter Data Sheet
36-75 VDC Input; 28 VDC @ 12.5 A Output
Page 6 of 14
Figure B: Startup scenario #1.
Figure C: Startup scenario #2.
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