GALW9V647 Datasheet, PDF (5/8 Pages) Bel Fuse Inc. – SIRIUS DC/DC CONVERTER

SIRIUS DC/DC CONVERTER
48V Input – 9.6VDC – 47A Output
CoolConverter^™
POWER PRODUCTS
GALW9V647
Protection and Control
Thermal Shutdown
The printed circuit board temperature is measured using a
semiconductor sensor. If the maximum rated temperature
is exceeded, the converter is latched off. To re-enable the
converter requires cycling the ON/OFF pin or power to the
converter. If non-latching is required, consult factory.
Trim-up
{ } ^{Rtrim-UP =}
Vo (100+∆%) _{_} (100+2∆%)
1.225∆%
∆%
5.11kΩ
Control Options
As the behavior of the circuit is determined by firmware in the
microcontroller, specific requirements, such as:
• non-latching thermal protection
• custom valid input voltage range
• controlled delay from initiating an ON/OFF signal for
power sequencing
can be accomplished with no change to hardware. The
standard behavior was chosen based on system design
experience, but customers may have their own requirements.
Please contact Bel Power for any special needs.
9.6V Trim-up
N/A
Safety
An external input fuse must always be used to meet these
safety requirements.
External Output Trimming
+ Out
Trim
– Out
Trim-down
{ } ^{R = trim-DOWN}
100 _ ₂
∆%
5.11kΩ
Trim-down
1000
Trim
To trim the output voltage higher, connect the required trim
100
resistor from the Trim pin to the +Out pin. To trim the output
voltage lower, connect the required trim resistor from the Trim
pin to the –Out pin.
10
0 1 2 3 4 5 6 7 8 9 10
Decrease in Output Voltage (%)
©2008 Bel Fuse Inc. Specifications subject to change without notice. 07.08
Bel Power Inc. 155 Flanders Road, Westborough, MA 01581 • Tel [phone] • Fax [phone] • www.belpower.com
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