JNCW016A0R Datasheet, PDF(6/15 Page) Lineage Power Corporation – 36

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JNCW016A0R Datasheet, PDF (6/15 Pages) Lineage Power Corporation – 36–75 Vdc Input; 28Vdc Output; 16Adc Output

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Data Sheet

JNCW016A0R Orca Series; DC-DC Converter Power Modules

36â75 Vdc Input; 28.0Vdc Output; 16Adc Output

Test Configurations

Note: Measure the input reflected-ripple current with a simulated

source inductance (LTEST) of 12 ÂµH. Capacitor CS offsets possible

battery impedance. Measure the current, as shown above.

Figure 7. Input Reflected Ripple Current Test Setup.

Note: Use a Cout (470 ÂµF Low ESR aluminum or tantalum capacitor

typical), a 0.1 ÂµF ceramic capacitor and a 10 ÂµF ceramic capacitor,

and 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 8. Output Ripple and Noise 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 7, a 470Î¼F Low ESR aluminum

capacitor, CIN , mounted close to the power module helps

ensure the stability of the unit. Consult the factory for further

application guidelines.

Output Capacitance

The JNCW016A0R power module requires a minimum

output capacitance of 440ÂµF low ESR capacitor, Cout to

ensure stable operation over the full range of load and line

conditions, see Figure 8. If the ambient temperature at

module startup is between 0OC and -10 OC, it is required to

use at least 660uF aluminum or 440uF polymer capacitors;

and if the ambient temperature at module startup is

between -10OC and -20 OC, it is required to use at least

880uF aluminum or 440uF polymer capacitors. If the

ambient temperature at module startup is below -20OC, it is

required to use only 440uF polymer capacitors. Use of

polymer capacitors can be avoided by suitable warmup

time, when starting from -40OC. In general, the process of

determining the acceptable values of output capacitance

and ESR is complex and is load-dependent.

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

60950-1, 2nd Ed., CSA No. 60950-1 2nd Ed., and VDE0805-1

EN60950-1, 2nd Ed.

For end products connected to â48V dc, or â60Vdc nominal

DC MAINS (i.e. central office dc battery plant), no further fault

testing is required. *Note: -60V dc nominal battery plants

are not available in the U.S. or Canada.

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 9. Output Voltage and Efficiency Test Setup.

For all input voltages, other than DC MAINS, where the input

voltage is less than 60V dc, if the input meets all of the

requirements for SELV, then:

ï§ The output may be considered SELV. Output voltages

will remain within SELV limits even with internally-

generated non-SELV voltages. Single component failure

and fault tests were performed in the power converters.

ï§ One pole of the input and one pole of the output are to

be grounded, or both circuits are to be kept floating, to

maintain the output voltage to ground voltage within

ELV or SELV limits. However, SELV will not be

maintained if VI(+) and VO(+) are grounded

simultaneously.

August 14, 2013

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