IR3080M International Rectifier, IR3080M Datasheet - Page 26

• Manufacturer Part Number: IR3080M
• Description: IC PHASE CONTROLLER 32-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3080M

• Applications: Processor
• Current - Supply: 11mA
• Voltage - Supply: 9.5 V ~ 14 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 32-MLPQ
• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 150kHz to 1.0MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IR3080M

C
ceramic capacitor between 10pF and 220pF is usually enough.
Type III Compensation for Non-AVP Applications
Resistor R
the crossover frequency fc between 1/10 and 1/5 of the switching frequency per phase and select the desired phase
margin θc. Calculate K factor from Equation (39), and determine the component values based on Equations (40) to
(44),
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
CP1
Page 26 of 41
is optional and may be needed in some applications to reduce the jitter caused by the high frequency noise. A
C
MI
SCOMP
FB
is the PWM gain in the current share loop
is chosen according to Equations (16), and resistor R
=
. 0
65
C
C
C
C
R
K
R
R
F
CP
CP
MI
CP
CP
CP
FB
FB
*
=
1
1
R
=
=
tan[
=
=
=
=
=
=
PWMRMP
2 (
R
R
2
2
10
2
(
2
π
π
FB
PWMRMP
V
π
π
π
π
4
I
∗
∗
∗
∗
∗
∗
∗
∗
−
f
f
(
R
2 (
K
K
V
C
f
C
f
f
L
180
θ
C
*
C
C
CP
PWMRMP
E
π
∗
∗
V
C
)
∗
1
∗
2
1
*
R
R
I
∗
∗
K
∗
K
*
+
CP
C
FB
C
L
1
∗
I
PWMRMP
∗
C),
E
L
O
E
5 .
R
C
E
*
∗
)]
CP
−
and determine the C
∗
FB
G
C
V
V
V
C
O
CS
E
DAC
V
O
E
O
∗
∗
*
_
∗
∗
R
ROOM
2
)
f
FB
π
f
SW
( *
K
C
∗
)
V
∗
2
*
I
V
f
V
*
∗
CI
−
PWMRMP
V
PWMRMP
R
,
V
*
PWMRMP
LE
DAC
. 1
*
05
1 [
)
*
+
10
SCOMP
2
π
6
*
f
CI
DRP
,
*
C
and capacitor C
E
( *
V
O
I
O
)]
*
F
MI
DRP
are not needed. Choose
(37)
(38)
(39)
(40)
(41)
(42)
(43)
(44)
(
(45)
46)
CI
9
) based on the
/30/04
IR3080