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Electrical characteristics curves – Delta Electronics Delphi Series E24SR User Manual

Page 6

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DS_E24SR05012_01032008


6

ELECTRICAL CHARACTERISTICS CURVES



Strip

Copper

Vo(-)

Vo(+)

10u

1u

SCOPE

RESISTIVE

LOAD

Figure 12:

Input reflected ripple current, i

s

, through a 12µH

source inductor at nominal input voltage and rated load current
(20 mA/div, 2us/div)

Figure

13:

Output voltage noise and ripple measurement test

setup

0.0

2.0

4.0

6.0

2

4

6

8

10

12

14

1

Loadt Current (A)

O

ut

pu

t V

ol

tag

e(

V

)

6

Figure 14:

Output voltage ripple at nominal input voltage and

rated load current

(Io=12A)(20 mV/div, 2us/div)

Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz. Scope measurements should be
made using a BNC cable (length shorter than 20 inches).
Position the load between 51 mm to 76 mm (2 inches to 3
inches) from the module

Figure 15:

Output voltage vs. load current showing typical

current limit curves and converter shutdown points