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L6918 L6918A

FB and COMP has always a capacitor in series (See fig. 8). The voltage regulated by each device is then equal

to:

devices N)

load current is given by:

Figure 7. Output transient response without (a) and with (b) the droop function

Figure 8. Active Droop Function Circuit

The feedback current is equal to 50

tion threshold, so the maximum output voltage deviation is equal to:

V

OU T

VID

R

FB

I

FB

VID

R

FB

R

SEN SE

Rg

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

I

OU T

⋅⋅

–

=

⋅

–

=

V

OU T

VID

R

FB

I

OU T

VID

R

FB

R

SEN SE

Rg

---------------------- I

OU T

VID

R

FB

R

SEN SE

Rg

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

I

LOAD

2

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

⋅⋅

–

=

⋅⋅

–

=

⋅

–

=

(a)

(b)

ESRDROP

ESRDROP

Ref

COMP

FB

Ref

COMP

FB

∆V

O L_INTERVENTION

+R

FB

70

µA

⋅

=

∆V

FU LL _POSITIVE_LOAD

+R

FB

50

µA

⋅

=