QBK025A0B71-BPH datasheet(7/16 Pages) LINEAGEPOWER | 36-55Vdc Input; 12Vdc Output Voltage; 25A Output Current

부품명	QBK025A0B71-BPH

부품 상세설명	36-55Vdc Input; 12Vdc Output Voltage; 25A Output Current

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제조업체	LINEAGEPOWER [Lineage Power Corporation]

홈페이지	http://www.lineagepower.com

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7 / 16 page

Data Sheet

March 27, 2008

QBK025A0B DC-DC Power Modules:

36-55Vdc Input; 12Vdc Output Voltage; 25A Output Current

LINEAGE POWER

7

Test Configurations

Note:

Measure input reflected-ripple current with a simulated

source inductance (LTEST) of 12 µH. Capacitor CS offsets

possible battery impedance. Measure current as shown

above.

Figure 9. Input Reflected Ripple Current Test

Setup.

Note:

Use a 1.0 µF ceramic capacitor and a 10 µF aluminum

or tantalum capacitor. Scope measurement should be made

using a BNC socket. Position the load between 51 mm and

76 mm (2 in. and 3 in.) from the module.

Figure 10. Output Ripple and Noise Test Setup.

LOAD

CONTACT AND

SUPPLY

II

CONTACT

VI(+)

VI(–)

VO1

DISTRIBUTION LOSSES

RESISTANCE

IO

VO2

Note: All measurements are taken at the module terminals.

When socketing, place Kelvin connections at module

terminals to avoid measurement errors due to socket contact

resistance.

Figure 11. Output Voltage and Efficiency Test

Setup.

Design Considerations

Input Source Impedance

The power module should be connected to a low

ac-impedance source. A highly inductive source

impedance can affect the stability of the power

module. For the test configuration in Figure 9, a 100μF

electrolytic capacitor (ESR<0.7

Ω at 100kHz), mounted

close to the power module helps ensure the stability of

the unit. Consult the factory for further application

guidelines.

Safety Considerations

For safety-agency approval of the system in which the

power module is used, the power module must be

installed in compliance with the spacing and

separation requirements of the end-use safety agency

standard, i.e., UL 1950, CSA C22.2 No. 60950-00,

and VDE 0805:2001-12 (IEC60950 3

rd Ed).

If the input source is non-SELV, for the module’s

output to be considered as meeting the requirements

for safety extra-low voltage (SELV), all of the following

must be true:

The input source is to be provided with reinforced

insulation from any other hazardous voltages,

including the ac mains.

One VIN pin and one VOUT pin are to be grounded,

or both the input and output pins are to be kept

floating.

The input pins of the module are not operator

accessible.

Another SELV reliability test is conducted on the

whole system (combination of supply source and

subject module), as required by the safety

agencies, to verify that under a single fault,

hazardous voltages do not appear at the

module’s output.

Note: Do not ground either of the input pins of the

module without grounding one of the output

pins. This may allow a non-SELV voltage to

appear between the output pins and ground.

The power module has extra-low voltage (ELV)

outputs when all inputs are ELV.

The input to these units is to be provided with a

maximum 15 A fast-acting (or time-delay) fuse in the

unearthed lead.

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