IR3081AMPBF International Rectifier, IR3081AMPBF Datasheet - Page 25

• Manufacturer Part Number: IR3081AMPBF
• Description: IC CTRLR XPHASE VR10.0 28MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3081AMPBF

• Applications: Processor
• Current - Supply: 11mA
• Voltage - Supply: 9.5 V ~ 14 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 28-MLPQ
• Package: 28-Lead MLPQ
• Circuit: X-Phase Controller IC
• Switch Freq (khz): 150kHz to 1.0MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 25 of 39
C
MI
SCOMP
is the PWM gain in the current share loop,
=
. 0
65
F
MI
*
R
=
PWMRMP
R
(
PWMRMP
V
I
−
V
*
PWMRMP
V
*
I
*
C
I
PWMRMP
C),
O
*
−
and determine the C
G
V
V
CS
DAC
O
∗
*
_
ROOM
2
)
f
π
SW
( *
∗
V
*
I
f
V
*
CI
−
PWMRMP
R
V
*
LE
DAC
. 1
*
05
1 [
)
*
+
10
SCOMP
2
π
6
*
f
CI
,
*
C
E
( *
V
O
I
O
)]
*
F
MI
(40)
(
41)
CI
IR3081A
1/31
) based on the
/05