LC010CL datasheet(14/24 Pages) MACOM

14 / 24 page

Tyco Electronics Corp.

Data Sheet

August 1998

18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W

LC/LW010- and LC/LW015-Series Power Modules:

Test Configurations

8-203(C)

Note: Input reflected-ripple current is measured with a simulated

source impedance of 12 µH. Capacitor Cs offsets possible

battery impedance. Current is measured at the input of the

module.

Figure 33. Input Reflected-Ripple Test Setup

8-513(C).g

Note: Use two 0.47 µF ceramic capacitors. Scope measurement

should be made using a BNC socket. Position the load

between 50 mm and 75 mm (2 in. and 3 in.) from the module.

Figure 34. Peak-to-Peak Output Noise

Measurement Test Setup for Single

Outputs

8-204(C)

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 35. Output Voltage and Efficiency

Measurement Test Setup for Single

Outputs

8-808(C).d

Note: Use four 0.47 µF ceramic capacitors. Scope measurement

should be made using a BNC socket. Position the load

between 50 mm and 75 mm (2 in. and 3 in.) from the module.

Figure 36. Peak-to-Peak Output Noise

Measurement Test Setup for Dual

Outputs

8-863(C).a

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 37. Output Voltage and Efficiency

Measurement Test Setup for Dual

Outputs

TO OSCILLOSCOPE

12 µH

CS 220 µF

IMPEDANCE < 0.1

Ω

@ 20 ˚C, 100 kHz

VI(+)

VI(-)

BATTERY

33 µF

CURRENT

PROBE

LTEST

VO(+)

VO(–)

0.47 µF

RESISTIVE

LOAD

SCOPE

COPPER STRIP

0.47 µF

VI(+)

VI(-)

VO(+)

VO(-)

SUPPLY

CONTACT RESISTANCE

CONTACT AND

DISTRIBUTION LOSSES

LOAD

VO(+)

VO(–)

–

[]IO

VI(+)

VI(–)

–

[]II

------------------------------------------------



 100

VO1(+ )

VO2(-)

0.47 µF

SCOPE

COPPER STRIP

SCOPE

COM

RLOAD1

RLOAD2

0.47 µF

VI(+)

SUPPLY

CONTACT

RESISTANCE

CONTACT AND

DISTRIBUTION LOSSES

LOAD

VI(-)

VO1

VO2

COM

LOAD

VOJ

COM

–

[]IOJ

∑

() VI –

()

–

[]II

--------------------------------------------------- x100

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