IR3081 International Rectifier Corp., IR3081 Datasheet - Page 24
IR3081
Manufacturer Part Number
IR3081
Description
Xphasetm Vr 10 Control Ic
Manufacturer
International Rectifier Corp.
Datasheet
1.IR3081.pdf
(39 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
IR3081
Manufacturer:
IR
Quantity:
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IR3081M
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IR
Quantity:
20 000
CURRENT SHARE LOOP COMPENSATION
The crossover frequency of the current share loop should be at least one decade lower than that of the voltage loop
in order to eliminate the interaction between the two loops. A capacitor from SCOMP to ground is usually enough
for the share loop compensation. Choose the crossover frequency of current share loop (f
crossover frequency of voltage loop (f
Where F
Page 24 of 39
C
MI
SCOMP
is the PWM gain in the current share loop
=
. 0
65
C
C
C
R
R
F
CP
MI
CP
CP
FB
FB
*
1
1
R
=
=
=
=
=
=
PWMRMP
R
R
2
2
2
(
2
π
π
FB
PWMRMP
V
π
π
I
∗
∗
∗
∗
∗
−
f
f
2 (
K
K
V
C
f
C
f
C
*
C
PWMRMP
π
∗
∗
V
∗
1
∗
1
*
R
R
I
∗
K
K
*
CP
C
FB
∗
I
PWMRMP
∗
C),
L
O
R
C
E
*
CP
−
and determine the C
∗
FB
G
V
V
C
CS
DAC
V
O
E
O
∗
*
_
∗
∗
ROOM
2
)
f
π
f
SW
( *
K
C
∗
)
V
2
*
I
f
V
*
∗
CI
−
V
PWMRMP
R
,
V
*
PWMRMP
LE
DAC
. 1
*
05
1 [
)
*
+
10
SCOMP
2
π
6
*
f
CI
,
*
C
E
( *
V
O
I
O
)]
*
F
MI
(42)
(37)
(38)
(39)
(40)
(41)
(
43)
CI
10/01
) based on the
IR3081
/04