6130IRZ 데이터 시트보기 (PDF) - Intersil

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6130IRZ

Power Sequencing Controllers

Intersil 

ISL6123, ISL6124, ISL6125, ISL6126, ISL6127, ISL6128, ISL6130

ENABLE

POWER

SUPPLY

OE

LOW = RESET

SYSRST#

ISL6124

#N

G

UVLO

A

T

ENABLE# E

RESET#

TO LOGIC

INPUT

ENABLE#

SYSRST#

ISL6125 L

# N+1 O

G

RESET#

I

UVLO

C

RESET#

RESET#

FIGURE 19. MULTIPLE ISL612X SERIAL CONFIGURATION

Voltage Tracking

In some applications the various voltages may have to track

each other as they ramp up and down, whereas others may

just need sequencing. In these cases tracking can be

accomplished and has been demonstrated over a wide

range of load current (1A to 10A) and load capacitance

(10µF to 3300µF) with the ISL612X family. Figure 20 and

Figure 21 illustrate output voltage ramping tracking

performance, note that differences are less than 0.5V. With

the relevant GATE pins tied together in a star pattern, so that

the resistance between any two GATE pins is equivalent (1k

to 10k) results in a sharing of the GATE ramping voltage and

with the same or similar enough FETs this behavior is

observed.

It is suggested that this circuit implementation be prototyped

and evaluated for the particular expected loads prior to

committing to manufacturing build.

FIGURE 20. OUTPUT VOLTAGE ON LOW TO HIGH TRACKING

FIGURE 21. OUTPUT VOLTAGE HIGH TO LOW TRACKING

18

FN9005.8

February 5, 2007

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