GPDW2V520RPMRT001 datasheet(4/6 Pages) GALAXY

Part #	GPDW2V520RPMRT001

Description	DORADO 24V or 48V Input, 1.5V, 1.8V, 2.0V, 2.5V, 3.3V DC, 20A Output or 5.0V DC, 15A Output

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Manufacturer	GALAXY [Galaxy Power, Inc.]

Direct Link	http://www.galaxypwr.com

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4 / 6 page

Dorado, Page 4

Part No. 01-002 Rev. 1.0–110802

PRODUCT PREVIEW

Output Over Voltage Protection:

The output voltage is constantly monitored by the

microprocessor and a parallel regulation path with an

independent reference. 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.

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. See diagram below.

Trim-down (%)

Trim-down

RTRIM-DOWN =

100

– 2

5.11k

Ω

∆%

{

}

Trim-up

RTRIM-UP =

VO(100+

∆%)

–

(100+

2∆%)

5.11k

Ω

1.225∆%

∆%

{

}

External Output Trimming

Application Notes

+ Sense

Trim

– Sense

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GPDW2V520RPMRT001 Datasheet(PDF) 4 Page - Galaxy Power, Inc.

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