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G2PW5V030 Datasheet(PDF) 4 Page - Galaxy Power, Inc.

Part No. G2PW5V030
Description  48V or 24V Input 1.0V, 1.2V, 1.5V, 1.8V, 2.0V, 2.5VDC, 60A Output 3.3V, 45A; 5.0V, 30A Output
Download  7 Pages
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Maker  GALAXY [Galaxy Power, Inc.]
Homepage  http://www.galaxypwr.com
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G2PW5V030 Datasheet(HTML) 4 Page - Galaxy Power, Inc.

   
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Pisces II Series, Page 4
WWW.GALAXYPWR.COM
Part No. 02-007 Rev. 3.0–061004
Output Over Voltage Protection:
The output voltage is constantly monitored by the
microprocessor with a redundant secondary-side
measurement circuit that both shuts down the duty cycle
and triggers the microprocessor to shut down. If the
output voltage exceeds the over-voltage specification,
the microprocessor will latch the converter off. To turn
the converter on requires either cycling the ON/OFF pin
or power to the converter. This advanced feature
prevents the converter from damaging the load if there
is a converter failure or application error. If non-
latching is required, consult factory.
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.
Control Options:
As the behavior of the circuit is determined by
firmware in the microcontroller, specific customer
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 we understand that customers
often have their own requirements.
Please consult Galaxy Power for your special needs.
Remote Sense:
The output voltage is regulated at the point where the
sense pins connect to the power output pins. Total sense
compensation should not exceed 0.4V or 10% of Vout,
whichever is greater.
Safety:
An external input fuse must always be used to meet
these safety requirements.
External Output Trimming
Trim:
To trim the output voltage higher, connect the
required trim resistor from the Trim pin to the +Sense
pin. To trim the output voltage lower, connect the
required trim resistor from the Trim pin to the –Sense
pin. The Trim-down equation applies to all Voltages.
Application Notes
RTRIM-UP =
Vo (100+
∆%)
(100+
2∆%)
5.11k
1.225∆%
∆%
{
}
Trim-up
(for 3.3V)
+ Sense
Trim
– Sense
RTRIM-DOWN =
100
– 2
5.11k
∆%
{
}
Trim-down
Trim-down (%)
RTRIM-UP =
Vo (100+
∆%)
(100+
2∆%)
5.11k
0.62∆%
∆%
{
}
Trim-up for 1.5V and above:
Trim-up for less than 1.5V:
Trim-down for all voltages:


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