IR3081AMTRPBF International Rectifier, IR3081AMTRPBF Datasheet - Page 25

• Manufacturer Part Number: IR3081AMTRPBF
• Description: IC CTRLR XPHASE VR10.0 28MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3081AMTRPBF

• 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
• Ic Function: Control IC
• Supply Voltage Range: 9.5V To 14V
• Operating Temperature Range: 0°C To +100°C
• Digital Ic Case Style: MLPQ
• No. Of Pins: 28
• Filter Terminals: SMD
• Supply Voltage Min: 9.5V
• Rohs Compliant: Yes
• Controller Type: PWM
• 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
• Other names: IR3081AMPBFTR; IR3081AMTRPBFTR; IR3081AMTRPBFTR

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
IR3081APBF
(40)
(
41)
CI
1/31
) based on the
/05