CMLV12S28-150 Wall Industries,Inc., CMLV12S28-150 Datasheet - Page 4

• Manufacturer Part Number: CMLV12S28-150
• Description: Low Voltage Dc-dc Chassis Mount Converter 10-36 Vdc Input 28vdc Output At 5.36a Half-brick Package
• Manufacturer: Wall Industries,Inc.

TECHNICAL DATASHEET
CMLV12S28-150
Rev. A
DESIGN CONSIDERATIONS
Under Voltage Lock Out (UVLO)
The converter output is disabled until the input voltage exceeds the UVLO turn-on limit. The converter will
remain ON until the input voltage falls below the UVLO turn-off limit.
Over Current Protection
The converter is protected from short circuit and over current conditions. During these fault conditions, the
converter output will ‘hiccup’. The converter output will recover once the short or over current fault is removed.
Over Temperature Protection (OTP)
The converter has internal thermal protection that will shut the converter OFF once the case temperature exceeds
the OTP turn-off limit. The converter will resume operation when the case temperature has dropped below the
OTP turn-on limit.
Output Filter
No additional output capacitor is needed for the power supply to operate. However, to reduce the ripple and noise
on the output, additional capacitance may be added. A low ESR Ceramic capacitor may be added across the +Vo
and –Vo pins to reduce the ripple and spike noise. Additional capacitance in the form of a tantalum or aluminum
electrolytic may also be placed across these pins in order reduce ripple and improve the transient peak-to-peak
voltage deviation.
Remote Sense
To improve the regulation at the load, route the connections from the -RS and the +RS pins to the –Vo and +Vo
connections at the load. This will force the converter to regulate the voltage at the load and not at the pins of the
converter (refer to Graph 6). If it is not desired to use the Remote Sense feature, the –RS and +RS pins may be left
open or they may be shorted to the -Vo and +Vo pins respectively. Shorting the RS pins to the Vo pins will reduce
the voltage drops through the converter pins.
Remote ON/OFF
The converter has the ability to be remotely turned ON or OFF. The CMLV series is Active-High. Active-High
means that a logic high at the ON/OFF pin will enable the supply (Figure 2). With Active-High, if the ON/OFF
pin is left floating, the supply will be enabled.
Figure 2: Active-High
CMLV Series Converter
(888) 597-WALL
www.wallindustries.com
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